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X1900 GT REVIEW UNLOCKING OVERCLOCKING VOLTMOD


           

x1900 GT review unlocking overclocking voltmod
Posted:2006-09-20 By video card review
Number of View:107199




X1900 GT REVIEW UNLOCKING

OVERCLOCKING VOLTMOD



By :video card review

Posted:2006-09-20






xtreview is your : Video card - cpu - memory - Hard drive - power supply unit source

x1900 GT review unlocking overclocking voltmod



The producers  graphic chips egularly announce better performante solutions. Before the end of this year both graphic giants plan to release products with support Of directX 10 (former WGF 2.0) and SM 4.0. However, high end video card  do not interest all user due to price witch  lay with more than five hundred dollars. And then, after a wile, companies start to make less performer card with average price range.

In the upper segment of the highly productive solutions at the given moment everything is sufficiently quiet, based there on ATI  radeon   x1900 XT/ XTX and NVIDIA  geForce 7900 GTX divide this niche approximately equally. But, after presenting GeForce 7900 GTX, NVIDIA immediately release GeForce 7900 GT, aimed at the price category of ~300$, and GeForce 7600 GT, which falls into the price niche of 200$. To the output Of geForce 7600 GT has got ATI replay by the release of the reduced version X1800XL on  base Of r520 - Radeon  x1800 GTO with 12 pipeline. The latter possesses good performance, but its price proved to be higher than in competitor.

Answer to GeForce 7900 GT in ATI was finished originally – Radeon  x1800 XT  256 MB., whose cost fall to the same categorie. But the reserves of  chips  r520 are low, therefore, as soon as the suitable crystals  r580 reached the desired volumes, for ati  appeared the Radeon  x1900 GT. This product is the built in x1900 XT version , but it possesses  sufficiently lower characteristics with –  12 textural blocks (TMU) and 36 pixel shader processors. In this case we will not forget, that this only temporary solution, which will exist to the announcement of chips RV560 and RV570, witch production will be fixed on 80 nm technical process. It is assumed that the processor RV570 has equal or even higher performance in comparison with R580, reduced to the level Of radeon   x1900 GT, but it costs less.

Let us explain, how successful in ATI came out the Radeon  x1900 GT, let us compare it with Radeon  x1900 XTX and Radeon  x1800 GTO, and certainly, let us try to unblock  pipeline.

Sapphire  radeon  x1900 GT.

video card  tested  was from the sapphire company with retail  assembly  .box  Formulation was in the typical sapphire style:

Sapphire  radeon  x1900 GT

Sapphire  radeon  x1900 GT Box
Assembly is standard as in the majority Of retail versions of sapphire video card  :

Sapphire  radeon  x1900 GT

Sapphire  radeon  x1900 GT Assembly
  • Adaptator- fHDTV and VIVO
  • Cable S -Video
  • Cable and adapter HDTV
  • Two adapters DVI/D -Sub (15- pin)
  • Cable for additional power connection
  • CD with the drivers and  utility  
  • CD with powerDVD  
  • CD with power director video editing
  • DVD “Sapphire Of select”
  • User Book  in six languages

x1900 GT

x1900 GT


The design of board is reference, but it use not that version that we saw in Radeon  x1900 XT/XTX, but the simplified diagram Of radeon  x1800 XT, used for the production Of radeon  x1800 GTO/XL. A smaller quantity of functional blocks in comparison with X1900 XT/ XTX, and also considerably smaller frequencies, make  possible to use the light power circuits design of this card. For sure, this badly will affect the overclocking frequency, but this we will check  lately.

Cooling is same as in Radeon  x1800 GTO/XL, The fan form is only somehow changed ; therefore it is not  necessary to speak about its high efficiency. The memory modules   are located on the face side  and they are making contact with the radiator through the thick thermo-padding.

Video card possesses 256 MB memory of  type GDDR3 from samsung production  , the acess time being at 1,4 ns .The Memory operates at frequency of 600 (1200) MHz, but the declared characteristics of  chips  samsung K4J55323QG-BC14 correspond to 700 (1400)  MHz, so here we had quite large overclocking capability.

The presence of two ports DVI with HDCP support , and also HDMI through  adapter, Like all ATI video card series  x1800/ x1900, Radeon  x1900 GT supports VIVO (TV-Out TV- In interface, HDTV-Out) - on the board we can find the rage theater chip  .

P/N in 102A5202250- . is very interesting keep this  noted…

identification Of  x1900 GTO:

x1900 GTO

On another - X1900 GT:

X1900 GT

Apparently, the reference with the suffix GT of this model, was accepted into the  last moment before the announcement . Possibly, they saved up suffix GTO  for  model on the base of RV570, but thus far this is only assumption.

Fundamental characteristics Of sapphire ATI  radeon  x1900 GT comparison with Radeon  x1800 GTO and  radeon  x1900 XTX:

Fundamental characteristics Radeon  x1800 GTO Radeon  x1900 GT Radeon  x1900 XTX
 Graphic chip R520 R580 R580
 Technical process, m 0.09 high- k 0.09 high- k 0.09 high- k
 Number of transistors, mln. 321 384 384
 Frequency, MHz 500 575 650
Memory bus width, bits 256

 Memory Type

GDDR3
Memory Volume  , MB. 256 256 512
 Frequency of , MHz 500 (1000) 600 (1200) 775 (1550)
Memory  capacity , Gb/ 32 37,5 49,6
 Number of pixel shader processors 12 36 48
 Number of textural blocks 12 12 16
 Number Of rOP's 12 12 16
 Fill rate 6000 6900 10400
 DirectX  version 9.0c
 Pixel shader Version 3.0
 Vertex shader Version 3.0
 Interface PCI- E 16x

As can be seen from table - The Radeon  x1900 GT lost a sufficiently significant quantity of functional blocks  . Frequencies are also lower than x1900xtx. Relative to Radeon  x1900 XTX they were reduced by 75 and 175 (350) MHz for the video processor and  memory respectively. It should be noted that Radeon  x1900 GT is equipped only with 256 MB. of memory.The release of  512 MB version is not planned.

Relatively to the r520 (Radeon  x1800 GTO), The radeon  x1900 GT has  significant advantage: textural blocks (TMU) , and here the quantity of pixel shader processors is three times larger  – 36. Certainly, we will not forget, and about others important architectural distinguishing different frequencies, but we do not doubt, that in this case the pixel shader pipeline will give the large performance addition , so the higher is the mathematical complexity of shader, the more significant it is.

With the release of driver catalyst 6.6,the  Radeon  x1900 GT get to support of technology crossFire . This means that the expensive master- map  x1900 crossFire  edition is not necessary – will replace with the second  radeon  x1900 GT. The exchange of data occurs through the PCI- E 16X bus;

Overclocking, temperature conditions, and 2d quality Sapphire ATI radeon x1900 GT.

In 2d regime , The ambiant temperature was approximately 30 degree Celsiuss, this card heat  a lot. Even with such ombiant temp the card worked in region of 62-63 degree Celsiuss. Fan at this temperature was at the rotation  speed of about 2600 r/min . Just as the Radeon  x1900 XT/ XTX, in this r580 model  was supported the separated frequencies and voltage on 2d and 3d. In “2d” regime the video processor works at 499,5 MHz, but memory don't have separate regimes and work at  constant frequency of 594 MHz.

x1900gt 3d gpu temperature

Immediately after the installation of the board we start the test  with 3DMark 05, was revealed very unpleasant special feature - card  persistently refuse to pass into 3d regime. First  we checked the work of  service, which corresponds for the frequencies control  and stresses (“ATI  hot  key  poller”) but it was innocent. It was necessary to search for another solution, and we find out  that the problems are in the regular bios. After flashing with  other  radeon  x1900 GT bios, the 3d   requencies regime start to work normally .

To test for stability using the new bios we used the HDR- test deep  freeze from the composition of 3d Mark 06, and repeted it 15 times.

x1900gt 3d gpu temperature

As a result maximum temperature  registered was in the level of ~88 of degree Celsiuss, and from the 3400 r/min region  we transfer through  barrier into 88 degrees, the rotation speed  passe to ~ 4300 r/min . In 3d operating mode, the graphic processor frequency  automatically rises to 575 MHz, and voltage - from 1,2 to 1,25 volts.

Unfortunately, cooling system proved to be very noisy. If the sound, published by fan on 3400 r/min, still can be borne, then on 4300 r/min it becomes serious stimulus.For overclocking we used the utility  rivaTuner  version 2.0 RC 16. to check the frequencies stability  was used Deep  freeze from the test  3d Mark 06, which was repeated 15 times eath check.

With overclocking everything was sufficiently predicted: the simplified board design , ineffective cooling, reduced voltage (relative to X1900 XT/ XTX) do not make  possible to hope for  good result. On this copy it was possible to attain stable work at the frequency of 615 MHz, increase was by 40 MHz  – this only 7% from the default. Raising vcore using the  utility   overclocker-x1k in to 1,45 volts (level  radeon  x1900 XTX), we obtained the same result.

x1900gt 3d gpu temperature

Honestly speaking,with the cuurent deficiencies in the design, we expected to obtain at least the frequency, at which works Radeon  x1900 XT/ XTX (650 MHz). Apparently, are shown the power limitations  (we already explained the overclocking frequency Of radeon  x1900 XT/ XTX,  increase in the stress on the power circuits GPU it has no effect because of the work temperature witch is close to the maximum). Possibly, after the replacement of cooling by  more effective one, it will be possible to attain the better result , but we do not  have  possibility to verify this at the moment. Let us simply note that the  installation of fan with 100% regime did not make  possible to raise the frequency  above 615 MHz.

Now let us passe for the memory : the chips Of samsung 1,4 ns took a step beyond the limits of their default possibilities, after being clocked at the frequency of 837 (1674) MHz and after passing Radeon  x1900 XTX with the memory  samsung  1,1 ns, witch work with frequency  of 810 (1620) MHz.. The increase in the the memory voltage do not  influenced the overclocking capability. Here it should be noted that timing of the memory  x1900 GT are most likely less aggressive than in X1900 XTX, which, probably, has a effect on frequency potential.

Temperature conditions practically in this case did not change – the maximum temperature of processor  was located in the region of 88 degree Celsiuss, the general temperature of the card also remained as before - 55 degrees. However, temperature on the chip became more constant and the fan rotation work stable at 4300 r/min.

The 2d quality was pretty good.

Unlocking graphic processors  pipeline 1900gt

We all remenber the good time where most user where able to unlock their 9500 card into 9700 .witch was high en class card tose day.

Alas, chances to open pipeline in Radeon  x1900 GT is very small. ATI rolled well their 100-percent blocking even on the chips R4XX, yes even Radeon  x1800 GTO, which we tested earlier, could not be unlcoked. However, to verify stands.

Bios from Radeon  x1900 XT/ XTX for the transformation cannot be used - the different memory capacity , different  memory chips , difference in timing. After flashing you will most likely see nothing :-) except continuous artefacts; therefore it is necessary to modify the native bios.

For the beginning ASIC  config was used in correspondence with bios Of radeon  x1900 XTX. In the hex- code on the displacement bytes of 0x7A: in X1900 XTX it is equal 0x49, while in X1900 GT to – 0x 4b.

Bios code from x1900 XTX:

Bios code from x1900 XTX:

Bios code from X1900 GT:

Bios code from X1900 GT:

Bios was then used to flash the card, Device ID was replaced, driver was installed, but the number of pipeline did not change.

Further, with the comparison in the hex- editor of different bios from X1900 GT and X1900 XT/ XTX, was found byte from the displacement of 0x7C: in all Radeon  x1900 XT/ XTX it is equal to 0x18, while in X1900 GT to – of 0x19.

Bios code from x1900 XTX:

x1900 xtx bios code

Bios code from x1900 GT:

x1900gt bios code

With the comparison Of bios from x1800 XT and X1800 GTO was noted the analogous situation. Unfortunately, the change of this byte in default  Of x1900 GT to 18 did not lead to any results.

But, after turning to conference with techPowerUp, we understood that they were on the right way.

One of the participants in this conference was modified the bios on the same principle. But it was explained that for the successful unlock it will be necessary not only the correctly modified bios, but also the map with “correct” chip. “Correct video card” are produced on the chip  r580 PRO, and rest - in R580 LE/XL with the hardware block. To us fell precisely the chip  r580 LE/XL.

 

x1900 gt device id

Obviously in order to accelerate the release Of radeon  x1900 GT, to the first parties of video card send will get full functional unlockable chips. But the majority later card will be produced on the processors  r580 LE/ XL.

According to small statistics assembled on the same forum, all unclocked video card have GB_PIPE_SELECT of the same as in X1900 XT/ XTX of –  3FE4, to look it is possible in the program ATI  tool . In our case GB_PIPE_SELECT it was:

x1900 gt pipeline unclocking

Attention! After any manipulations in  hex- editor to correct the check sum bios it is necessary to open it into RaBiT and then save it again, otherwise u can put your card in non working  state. And,  as usual, in conclusion here the Bios from Sapphire  x1900 GT here.

Test platform

  • Processor AMD  athlon  64 4000+ San  diego  stepping E4 (2400 MHz, 12 * 200 MHz, 1MB).
  • Motherboard  sapphire pure  crossFire  advantage PC-A9RD580Adv
  • Memory 2x512 MB  hynix  d43 DDR400 (400 MHz, 2.5-3- 3-7 1T)
  • Hard disk 320 GB  western  digital WD3200JS SATA2
  • Power unit 450 W FSP-450PAF
Video cards
  • Sapphire ATI  radeon  x1900 GT (256 MB, 256 bit, R580, 575/600)
  • Sapphire ATI  radeon  x1900 XTX (512 MB, 256 bit, R580, 650/775)
  • Sapphire ATI  radeon  x1800 GTO (256 MB, 256 bit, R520, 500/500)

 

Software:
  • Windows XP  pro SP2
  • DirectX 9.0c (4.09.0000.0904)
  • Catalyst 6.5, Direct  3d ver. 6.14.10.0399, OpenGL  ver. 6.14.10.5819
  • Catalyst  control  center  6.5 ver. 1.2.2314.20337
Test applications:
  • 3DMark05 (v1.2)
  • 3DMark06 (v1.02)
  • Far Of cry (v1.4 of beta)
  • Quake 4 (v1.0.5.0 of beta 2)
  • F.E.A.R. (v1.01)
  • Half-Life2  lost  coast
  • Call of  duty 2 (v1.2)
Driver settings.
Catalyst 6.5
Antialiasing  settings =  off / aA6x
Anisotropic  filtering =  off / aF16x
High  quality AF =  off
Temporal AA =  disabled
Adaptive  antialiasing =  disabled
Catalyst A.I. = Standard
MipMap  detail  level =  high  quality
Wait  for  vertical  sync =  always  off
Geometry  instancing = On
Support DXT  texture  format = On
Alternate  pixel  centers =  off
Triple  buffering =  off
Force  24bit Z -buffer  depth =  off

3DMark05.

x1900 gt 3d mark 2005

3DMark05

x1900 gt 3d mark 2005  overall

 

In the general test the difference of the performance Of radeon  x1900 GT and Radeon  x1900 XTX composed ~ 14%  in the resolution  of 1024x768 and ~18% in  1280x1024 regime. The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO composed   ~ 27 % and ~ 32% in  1024x768 and 1280x1024 respectively.

x1900gt 3d mark separate tests

x1900 gt 3d mark 2005  game test

Radeon  x1900 XTX became the first, in this case where its advantage is rather composed from  the larger number of textural blocks and higher clock frequency. The delay of  x1900 GT from its  elder brother in  1024x768 composed ~ 4,3%, and in 1280x1024 it was more than  twice of previous value and corresponds to the percent difference in the frequency ~ 11,6%.

The advantage Of radeon  x1900 GT relative to the Radeon  x1800 GTO, composed ~29 and ~ 36% in  1024x768 and 1280x1024 respectively. In an obvious manner is shown triple  larger quantity of  pixel shader processors.

The second test (Firefly  forest) strongly loads the graphic  processors, since  the scene has enormous quantity  dynamically generatable scene. But here the productivity Of x1900 GT relative to X1900 XTX is not proportional to the difference in the frequency - in 1024x768 the delay composed ~ 14,5%, but in  1280x1024 already ~20%.

The advantage Of radeon  x1900 GT relative to Radeon Of x1800 GTO, composed ~23 and ~ 27% in1024x768 and 1280x1024 respectively. The difference in performance  is less than in the first test.

The third test (Canyon  flight) is complex both from the point of view mathematical and  textural load: with the creation of water surface are used the reflections, refractions and deep fog , and the wall of the canyon, along with the airship flies, they are generated with using sufficiently complex shader. The advantage Of radeon  x1900 XTX above the junior brother was formed as it have larger number of functional blocks and composed ~20 and ~ 22% in 1024x768 and 1280x1024 respectively.

The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~29 and ~ 32% in 1024x768 and 1280x1024 respectively. The larger number of  pixel shader processors again showed influential advantage.

3DMark06

x1900 gt 3d mark 2006

3DMark06

x1900 gt 3d mark 2006  overall

x1900 gt 3d mark 2006  game test

In the general test the difference of performance between the radeon  x1900 GT and the Radeon  x1900 XTX is close to the proportions of characteristics and composed ~ 19%   in resolution 1024x768 and ~ 21% in the resolution of 1280x1024.

The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~21 and ~ 25% in 1024x768 and 1280x1024 respectively.

In SM 2.0 tests the general delay Of radeon  x1900 GT from the elder model composed 25 and 27% in t1024x768 and 1280x1024 respectively. The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~24 and ~ 28% in  1024x768 and 1280x1024 respectively.

HDR/SM 3.0 tests are more complex from  mathematical point of view; therefore the performance dependence on the number of pixel shader processors is more explicit. Radeon  x1900 GT is slower than the elder brother by  ~27 and ~ 28% in 1024x768 and 1280x1024 respectively. The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO composed ~31 and ~ 34% in  1024x768 and 1280x1024 respectively.

Distribution on the separate tests

x1900 gt 3d mark 2006  game test

The first test (Return to  proxycon) taken from 3DMark 05, was considerable change and are used more complex shader  illumination,there  are considerably more than luminous sources, the new algorithms of shadows and texture with larger resolution. In contrast to the results of this test into 3DMark 05, here the Radeon  x1900 XTX has considerably larger advantage over the Radeon  x1900 GT. Superiority in the technical characteristics of graphic processor and doubly larger memory capacity helps to reach the difference in performance by ~28 and ~ 29% in 1024x768 and 1280x1024 respectively.

The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~24 and ~ 28% in 1024x768 and 1280x1024 respectively, which even is less than in the same test of 3DMark 05, most likely, is shown a deficiency in video of memory  but  one way or another, advantage in the number of pixel shader processors still.

The second test (Firefly  forest) is also taken from 3DMark 05 version  , with  additional luminous source, geometric load practically did not change. The use of longer shader  and  shadows complicated work to graphic processor. The advantage Of radeon  x1900 XTX composed ~23 and ~ 25% in 1024x768 and 1280x1024 respectively, which is also higher than in this test from 3DMark 05.

The advantage Of radeon  x1900 GT relative to the Radeon  x1800 GTO, composed ~26 and ~ 29% in 1024x768 and 1280x1024 respectively, which is approximately equal with the same test of 3DMark 05, with the only difference that the complexity of tests is distinguished approximately one and  half times.

The third test (Canyon  flight) was also taken from 3DMark 05, but it got  even larger modification than the two previous tests, now here the SM 3.0 is present with completely popular technology HDR (High  dynamic  range), which makes  possible to make scene considerably  more realistic. There were also considerably number of shader in the water surface and canyon walls, mathematical complexity  approximately also grew  . The advantage Of radeon  x1900 XTX composed ~26 and ~ 28% in  1024x768 and 1280x1024 respectively, which exactly is proportional to the difference of characteristics.

The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~30 and ~ 34% in 1024x768 and 1280x1024 respectively, 36 pixel shader processors against 12 showed the good additional performance.

The fourth test (Deep  freeze) completely new and was developed from zero. At its basis, just as in the previous test - SM3.0 and HDR. The use of  qualitative soft shadows, which load well the graphic processor. Radeon  x1900 XTX left forward to ~23 and ~ 25% in 1024x768 and 1280x1024 respectively.

The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~25 and ~ 29% in 1024x768 and 1280x1024 respectively.

Far Of cry

far cry

FarCry

x1900 gt far cry  test

In the resolution of 1024x768 without FSAA performance  is abutted against the insufficient processor power  . With the activation Of FSAA6x   radeon  x1900 GT  lags behind the elder brother with ~ 12%, advantage over Radeon the x1800 GTO composed in all ~ 7%.

HDR Activation with Radeon  x1900 XTX and X1900 GT is practically equivalent to the start with FSAA6x, but performance is distinguished by  ~2-3 FPS. Radeon  x1800 GTO considerably lags, without ven getting in the 60 FPS range. The advantage Of radeon  x1900 GT above it composed ~ 22%.

In resolution 1280x1024 the performance Of radeon  x1900 XTX  is limited again by the processor, The Radeon  x1800 GTO and Radeon  x1900 GT already surrender position. The delay Of radeon  x1900 GT from Radeon  x1900 XTX composed ~ 11%, and with the activation Of FSAA6x  ~ 22%. Without FSAA the advantage Of radeon  x1900 GT above Radeon the  x1800 GTO is not considerable, but with the activation Of FSAA6x it composed ~ 15%.

In this resolution together with HDR comfortably to play  game  is only  possible with  Radeon  x1900 XTX, advantage over Radeon  x1900 GT composed ~25%. But Radeon  x1900 GT shows the good effectiveness of its 36 pixel shader  processors, anticipating Radeon  x1800 GTO by ~ 30%.

Quake 4

Quake 4

Quake 4
Quake 4 x1900gt performance

Radeon  x1900 XTX and Radeon  x1900 GT go practically in the same level, only in resolution1280x1024 with active  FSAA6x the latter   begins considerably to lag. In 1024x768 the delay between  radeon   x1800 GTO from its elder is not very considerable, while in 1280x1024 relative to Radeon  x1900 GT it composed ~ 24%, with the activation Of FSAA6x ~ 15%, last, most likely, this  indicates a deficiency in the video memory in both maps.

FEAR

FEAR

FEAR

FEAR x1900gt performance test

FEAR x1900gt performance test

In FEAR  radeon  x1900 XTX and Radeon  x1900 GT they reveal entire  potential. Describing the architecture  r580, we exactly spoke about  the favor of the computational and textural operations.

With the use of soft shadows (Soft  shadow), but without the activation of FSAA the delay Of radeon  x1900 GT from elite video card composed ~ 30% in both resolutions. The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO reached the maximum of - ~36 and ~ 40% in 1024x768 and 1280x960 respectively, but one way or another our hero did not get the desired 60 FPS.

With  soft shadows Off :to reduce load on the card,  the advantage Of radeon  x1900 XTX was preserved approximately at the same level - ~ 29% in both resolution. The difference in performance between Radeon  x1800 GTO and Radeon  x1900 GT was considerably  reduced - ~16 and ~ 23% in  1024x768 and 1280x960 respectively.

In the max quality regime (Soft  shadow and FSAA4x) the difference between Radeon  x1900 XTX and Radeon  x1900 GT practically did not change –  ~34 and ~ 31% in 1024x768 and 1280x960 respectively. The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~27 and ~ 28% in 1024x768 and 1280x960 respectively.

Half-Life  2 Lost Of coast

 half life 2

Half-Life  2 Lost of coast

x1900gt half life 2 benchmark

In the regime without HDR and without the activation FSAA the performance Of radeon  x1900 XTX was rested into the insufficiently powerful processor in both resolution, Radeon  x1900 GT in 1024x768 remained in all  FPS (~ 3,5%), while in  1280x1024 it is already ~ 12%. The delay Of radeon  x1800 GTO from Radeon  x1900 GT composed ~7 and ~ 18% in 1024x768 and 1280x960 respectively.

With the activation Of FSAA6x in 1024x768 the performance Of radeon  x1900 XTX and Radeon  x1900 GT falls insignificantly and it is distinguished in all on 2.3 FPS, and in the 1280x1024 the latter begins already influential  lag – with ~ 19%. The advantage Of radeon  x1900 GT relative to Radeon  x1800 GTO, composed ~10 and ~ 18% in  1024x768 and 1280x1024 respectively.

x1900gt half life 2 benchmark

With the activation Of HDR  radeon  x1900 XTX leave other card . Without the activation of FSAA the advantage over Radeon the x1900 GT composes ~12 and ~ 23% 1024x768 and 1280x1024 respectively. The difference between Radeon  x1900 GT and Radeon  x1800 GTO  ~18 and ~ 27% in 1024x768 and 1280x1024 respectively.

With the activation Of FSAA6x the Radeon  x1900 XTX grows  more, and relative to Radeon  x1900 GT compose ~23 and ~ 33% in 1024x768 and 1280x1024 respectively. But here the advantage Of radeon  x1900 GT above the Radeon  x1800 GTO  is reduced - ~18 and ~ 21% in  1024x768 and 1280x1024 respectively. yes even 256 MB of memory are clearly insufficient.

Call of Of duty 2.

Call  Of duty 2

Call  Of duty 2
x1900gt Call  Of duty 2 benchmark

Again Radeon  x1900 XTX leaves far behind low-end and middle-end models, but we should note that  the game uses about 400 MB of video memory to stock  textures. Therefore the performance Of radeon  x1800 GTO and Radeon  x1900 GT is limited by the video memory volume  , and the performance differ in all on 1-2 FPS. It is necessary to note that the game sufficiently processor- dependant, and even results Of radeon  x1900 XTX was limited to 40 FPS, but also in the very heavy duty regime advantage over the Radeon  x1900 GT composes practically 50%.

Conclusions.

As a whole, Radeon  x1900 GT by the  formula of 12 textural blocks (TMU) and 36 pixel shader processors it demonstrated the good  effectiveness of  chip architecture  r580, exceeding its junior brother Radeon X1800 GTO on  average from 20- to 30%, and lagging to 20-30% behind Radeon  x1900 XTX.

Everything is sufficiently predicted relative to Radeon   x1900 XTX and  radeon  x1900 GT: the performance of two modifications on  base Of r580 is ranked with respect to the characteristics  – of 48 pixel shader processors against 36 and 16 textural blocks (TMU) against 12. Besides this, in  separate applications the differences in  frequencies and in the video memory.

Radeon  x1900 GT vs Radeon  x1800 GTO. At first look 20- 30%  advantage somehow entirely lay with  the triple large number of pixel shader processors and the higher frequencies. Alas, we expected to see higher deference from the 300% higher units. If we study the results of tests, it is possible to focus attention that the power of 36 pixel shader processors Of radeon  x1900 GT and the 12 by textural blocks (TMU) with the dependant samples of textures and with the memory capacity of 256 MB. with the insufficient memory capacity. The  memory capacity  is perceived in the heavy scene  with the high mathematical complexity (HDR, Soft  shadow, etc), where 36 pixel shader processors, probably, could show more than effectiveness.

Theoretically, if we begin to operate all of 16 textural blocks (TMU) and to add 256 additional MB. of video memory, then the results Of radeon  x1900 GT would be close to the results  radeon  x1900 XTX.







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xtreview -  x1900 GT review unlocking overclocking voltmod

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x1900 GT review unlocking overclocking voltmod


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