Posted:2007-01-29 By video card review Number of View:35151
LEADTEK WINFAST PX7900GS-7950GT
TDH EXTREME REVIEW-BENCHMARK
By :video card review
Posted:2007-01-29
xtreview is your : Video card - cpu - memory - Hard drive - power supply unit source
Do You know what Extreme is? This always something extraordinary. And Leadtek precisely calls its accelerators series, which work at the high frequencies.
We will today we will review two video card from this company, which do not relate to the most rapid class, but at the same time they relate to most popular group from the Middle- segment.
These are GeForce 7900 GS and 7950GT. The first differ from the second in terms of pipeline and frequency . in the first some are blocked (in more detail it is possible to see the specifications of cards below). leadtek company decided to reduce the cost of 7950GT, after equipping it with only 256- megas-byte memory, when as all regular such card is proposed with complete 512- megas-byte. But user could not feel a large impact in the perfomance since the frequencies of card was raised from regular 550/1400 to 600/1430 MHz. Thus, in games, where the greatest requirements are imposed by shader calculations, this card will demonstrate higher performance, despite the smaller memory volume .
As far as 7900GS are concerned, the version from leadtek is also overclocked (520/1400 MHz against regular 450/1320 MHz). Both video card although relate already to the previous family g71, but not to G80; however, on the market for present games they both ensure practically all contemporary functions. The only function witch is not available is the operation HDR+AA .
Width of the system bus , exchange with memory: 256bit
Number of processors: 8
Number pixel of processors: 24
Number of textural processors: 24
Number Of rOPs: 16
Sizes: 190x100x16 mm.
PCB Color: light- green.
RAMDACs/TDMS: integrated in GPU.
Output 2xDVI (Dual-Link), TV- OUT.
VIVO: no
TV-out: integrated in GPU.
Support multiprocessor work: SLI (Hardware).
Memory used
Video Cards has 256 MB memory GDDR3 SDRAM, placed in the front side PCB.
Memory Microcircuits are from hynix (GDDR3). Access time in the memory microcircuits is 1.4ns, which corresponds to the frequency of 700 (1400) MHz.
Comparison with standard design, front view
Reference card NVIDIA geForce 7900 GS
As u see, before us the universal solution.
Both card are made on the base for the simplest seen by us PCB with memory system bus 256 bits as in 7900GT. This last, appeared almost a year ago, and was the cheap relative to the Hi-End 7900gtx, and now also it serves in the Middle- sector.
Connection to the analog monitors with d -Sub (VGA) is produced through the special adapter- adapters DVI-to- d -Sub.
Maximum resolutions and frequency:
240 Hz max refresh rate
2048 x 1536 x 32bit x85Hz max - on analog interface
2560 x 1600 @ 60Hz max - on digital interface
About the possibilities of video card on the playback of MPEG2 (DVD-Video) , Depending on film the CPU load with the playback on all contemporary video cards does not rise above 25%.
Now about the cooling systems. Both card (Leadtek winFast PX7900GS TDH extreme (GeForce 7900 GS) 256MB PCI- E and Leadtek winFast PX7950GT TDH extreme (GeForce 7950 GT) 256MB PCI- E) possess the same cooler.
This the good old large radiator, which covers the core and memory microcircuits. That fan force the cool air to pass though turbine which is located above the die and memory. Fan rotation speed is low; therefore it is practically noiseless.
The use of 600 MHz on core is not good point for 7950gt since even the enormous powerful cooler from 7900 GTX has not easily managed this heat emission, then here it clear that the cooler installed on the 7950gt extreme is not sufficient, any way the core temperature did not exceed 80 degrees.
Inside the box.
Delivery set in both card is identical. user Management , disk with drivers, game serious sam II, SpellForce2, disk with P.O. Cyberlink\'s collection for the creation and playback DVD, adapters DVI-to- d -Sub and S -Video-to-RCA, fan external power connector
Packings.
Both boxes are also identical, difference only in the appropriate inscriptions.
Installation and drivers
Test Configuration :
Computer on the base Of Intel core2 duo (775 Socket)
processor Intel core2 duo extreme x6800 (2930 MHz) (L2=4096K);
Motherboard EVGA nForce 680i SLI on chipset NVIDIA nForce 680i;
drivers ATI version CATALYST 6.12; NVIDIA version 96.97.
VSync ON.
Results of tests: performance comparison 7950gt vs 7900gs
We used those benchmark :
Splinter cell chaos theory v.1.04 (Ubisoft) — directX 9.0, shaders 3.0 (with HDR and without HDR), test Setting = maximum.
Call Of juarez (Techland/ubisoft) — directX 9.0, shaders 3.0 (HDR), demo (demo test was with the maximum quality.)
FarCry 1.4 (beta) (Crytek/UbiSoft), DirectX 9.0, shaders 2.0b/3.0 (with HDR and without HDR), demo from level research (start the game with option - DEVMODE), Setting to Very high. During the test was used HDRRendering=1
PREY 1.01 (3d Realms entertainment/Human head studios/2K Games) — openGL, shaders 2.x, demo003 (40MB!). Test was with the maximum quality.
3DMark05 1.20 (FutureMark) — directX 9.0
Serious sam II 1.068 (Croteam/2K Games) — directX 9.0, shaders 3.0 (with HDR and without HDR), demo used. Demo- standard demo0002 graphic setting to the maximum.
Company Of heroes (Relic entertainment/THQ) — directX 9.0, shaders 2.0, demo used. Test was done with the maximum quality.
3DMark06 1.02 (FutureMark) — directX 9.0c
video cards performance
3d mark 2006 sm2.0 test
3d mark 2006 sm3.0 test
3d mark 2005 benchmark
Farcry research benchmark
Farcry HDR benchmark
Call Of juarez benchmark
Company Of heroes test
Fear performance
Prey benchmark
Splinter cell chaos theory
Splinter cell chaos theory +HDR performance
Splinter cell chaos theory +HDR performance
Serious sam 2 performance
Conclusions
Leadtek winFast PX7900GS TDH extreme (GeForce 7900 GS) 256MB PCI- E - Good selection for the level of 180-210 US dollars, high frequencies give this card already a good boost. Good delivery set with contemporary game . I repeat, that if the card price will be lower than RADEON x1950 PRO. it is possible to say that this is a a good selection,
Leadtek winFast PX7950GT TDH extreme (GeForce 7950 GT) 256MB PCI- E - This card is completely original. The question here : what is better - high frequencies and small memory volume or large memory and low clock frequency? I assume that for overclocker it is better to go with more memory, the frequency can be raised. But for simple user this became a bit difficult .For the same price u will obtain card on the level Of x1900 XT.
Both products according to tradition have excellent quality.
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