X1900 GT REVIEW UNLOCKING OVERCLOCKING VOLTMOD
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| Posted:2006-09-20 By video card review Number of View:107220 |
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X1900 GT REVIEW UNLOCKING OVERCLOCKING VOLTMOD
By :video card review Posted:2006-09-20
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:
Assembly is standard as in the majority Of retail versions of sapphire video card :
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:
Fundamental characteristics Of sapphire ATI radeon x1900 GT comparison with Radeon x1800 GTO and radeon x1900 XTX:
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.
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.
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.
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 1900gtWe 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 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:
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.
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:
Test platform
Software:
3DMark05.
3DMark05
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
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
3DMark06
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
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
FarCry
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 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
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 Lost of coast
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.
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 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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