In the test 15 years ago: Two GeForce 7800 GTX 512 in the SLI network

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The GeForce 7800 GTX 512 (tested 15 years ago) represented the ultimate in graphics cards in January 2006. For users who wanted even more, ComputerBase tested an SLI combination of two of the high-end graphics cards (test).

A faster 7800 GTX

Like the original GeForce 7800 GTX, the GeForce 7800 GTX 512 was based on the G70 GPU, which, however, worked with significantly higher frequencies thanks to an optimized manufacturing process. The GPU clock has been increased from 430 to 550 MHz and the memory clock from 600 to 850 MHz compared to the original. Thanks to this significantly higher raw performance and twice the video memory, the new model was able to set itself apart in games. Since the GeForce 7800 GTX 512 supports Nvidia’s Scalable Link Interface (SLI), two graphics cards of this type can be interconnected for higher performance. In SLI mode, the graphics cards then alternately compute the frames (alternate frame rendering).

High resolution and anti-aliasing were the trump cards

A mixed picture emerged in the benchmarks. Although the SLI combination of two GeForce 7800 GTX 512 was able to set itself apart from a single graphics card, the lead in 1,280 × 1,024 pixels with an average of 9 percent was relatively small. Compared to two normal GeForce 7800 GTX, the combination worked only 3 percent faster – a single 7800 GTX 512 was ten percent faster than a 7800 GTX. The step from 1,280 × 1,024 to 1,600 × 1,200 pixels resulted in a performance advantage of 16 (two vs. one GTX 512) or 6 percent (two GTX 512 vs. two GTX). With the activation of anti-aliasing and anisotropic filtering, the advantage of the SLI combination of two GeForce 7800 GTX 512 increased to up to 34 percent compared to a single GTX 512. In this case, the team was 14 percent faster than two GeForce 7800 GTX. The absolute ideal case was FEAR with 1,600 × 1,200 pixels with 4 × anti-aliasing and 16 × anisotropic filtering – the increase in performance was 67 percent.

Aside from the twice as high acquisition costs, the operation of two high-end graphics cards had other disadvantages. The power consumption of the entire system increased from 235 to 334 watts and the GPU temperature from 87 to 97 degrees Celsius under load. In addition, the fans of the SLI team worked around 50 percent louder than when operating a single GeForce 7800 GTX 512.

The high GPU temperatures also meant that the graphics card network could not be operated on most mainboards. If there wasn’t enough space between the two PCIe slots, the system crashed immediately under load. If you absolutely wanted maximum gaming performance, you were in good hands with two GeForce 7800 GTX 512 as long as you could live with the negative points. For everyone else, more than 1,000 euros for two graphics cards was probably too much anyway.

In the “Tested 15 years ago” category, the editorial team has been looking into the test archive every Saturday since July 2017. The last 20 articles that appeared in this series are listed below:

Even more content of this kind and many more reports and anecdotes can be found in the retro corner of the ComputerBase forum.



[ source link ]
https://www.computerbase.de/2021-01/geforce-7800-gtx-512-sli-test-rueckblick/

test years #GeForce GTX SLI network

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