Menu
Nvidia GeForce 8800 GTS 512 in the test: The G92 can flex its muscles

Nvidia GeForce 8800 GTS 512 in the test: The G92 can flex its muscles

Overclockability

Many people out there are just getting new purchased graphics card will not be fast enough. A tried and tested means, this needto satisfy even more speed, the hardware has to be overclocked. As a little stability test, we ran 3DMark06, which is particularly graphics-heavy, and then tested the highest clock rate with the help of Company of Heroes, F.E.A.R and Prey. However, before taking measurements, you have to note that the results cannot be transferred to every card of the same type, as the quality differs from chip to chip.

Overclocking
  • Company of Heroes:
    • POV 8800 GTS 512 Exo - overclocked (719/1798/1050)
      109.3
    • POV 8800 GTS 512 Exo - Standard (700/1750/1000)
      104,6
    • 8800 GTS 512 - Standard (650/1625/972)
      101.0
  • FEAR:
    • POV 8800 GTS 512 Exo - overclocked (719/1798/1050)
      86.0
    • POV 8800 GTS 512 Exo - Standard (700/1750/1000)
      82,0
    • 8800 GTS 512 - standard (650/1625/972)
      77,0
  • Prey:
    • POV 8800 GTS 512 Exo - Overclocked (719/1798/1050)
      69,1
    • POV 8800 GTS 512 Exo - Standard (700/1750/1000)
      66.9
    • 8800 GTS 512 - standard (650/1625/972)
      63,5

Since the Point of View GeForce 8800 GTS 512 Exo-Edition already comes with higher clock rates, it is only possible to a limited extent on the graphics card to increase the frequencies further. A further complicating factor is that the GeForce 8800 GTS 512 is currently not correctly recognized by any overclocking tool andyou can therefore only increase the clock rates with 'nTune'. We were only able to overclock the G92 GPU on the POV card by 19 MHz to 719 MHz. This results in a shader frequency of 1798 MHz (an increase of 48 MHz). The GDDR3 memory could be overclocked by 50 MHz to 1050 MHz on the Point of View GeForce 8800 GTS 512 Exo Edition. This enabled us to achieve an average speed gain of around four percent.

VC-1/H.264 playback

Just a few years ago, all PCs were faced with the complicated task of decoding a DVD video. After the CPU had to work alone at first, and it was often overwhelmed by it, the graphics chip specialists came into fashion to equip their 3D accelerators with special functions in order to relieve the processor of the main work of decoding. A nice side effect was that the graphics cards could work with special algorithms that could improve the image quality without a great deal of performance. DVDs have long ceased to be a challenge. A modern PC now faces much more difficult tasks: decoding HD videos in the VC-1 or H.264 codec that have been recorded on a Blu-ray or an HD DVD (HD trailers have the same codecs as well as an identical image quality, but these are not encrypted, which is why the CPU load is a lot lower). We chose the film for “Children of Men” on an HD DVD (1080p, 24 frames per second), which is available in the VC-1 codec on an HD DVD. We measure the CPU utilization every second for the first two and a half minutes of the film and show every fifth second in a progress diagram. The action film 'X-Men 3', which is available in H.264 format (1080p, 24 frames per second), must serve as a representative of the Blu-ray group. For the measurements we have theCPU clocked down to 1.86 GHz.

VC-1 playback
Unit: Percent
  • Maximum:
    • Nvidia GeForce 8800 GTS 512
      52
    • ATi Radeon HD 3870
      48
    • Nvidia GeForce 8800 GT
      45
  • Average:
    • Nvidia GeForce 8800 GTS 512
      35
    • Nvidia GeForce 8800 GT
      31
    • ATi Radeon HD 3870
      22
  • Minimal:
    • Nvidia GeForce 8800 GTS 512
      15
    • ATi Radeon HD 3870
      9
    • Nvidia GeForce 8800 GT
      5

Since the video processor of the G92 GPU on the GeForce 8800 GTS 512 is identical to the one on the is the GeForce 8800 GT, the measured values ​​are logically similar in both the VC-1 and the H.264 acceleration. In this case, the driver has the greatest influence on the CPU load, which in our opinion explains the differences in the measured values. There were no problems or other abnormalities during HD playback. Since the H.264 benchmark was not yet available to us at the time of testing the Radeon HD 3870, we unfortunately cannot list the graphics card in this measurement.

H.264 playback
Unit: Percent
  • Maximum:
    • Nvidia GeForce 8800 GT
      52
    • Nvidia GeForce 8800 GTS 512
      39
  • Average:
    • Nvidia GeForce 8800 GT
      23
    • Nvidia GeForce 8800 GTS 512
      22
  • Minimal:
    • Nvidia GeForce 8800 GT
      13
    • Nvidia GeForce 8800 GTS 512
      11

On the next page: Price-performance ratio

Comments