First post, by Jan3Sobieski
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Hey Everyone,
I've been doing some video card testing as of late and came to a weird conundrum you might say. I have several ATI Rage Pro Turbo cards that I have acquired and while testing them I decided to actually test each one as I figured some might be burnt or damaged. I have at least two Rage Pro Turbo AGP chipset cards, both with 8mb of vram, but it seems one on the bottom consistently scored better in everything I ran: from 3dMark99 to Quake 2, Unreal, Forsaken, Turok. If it was 0.1-0.5 fps difference, I could understand that, but for example: the top card scored 33.1fps on Turok benchmark (ran 3 times) and the bottom got 36.1 (ran 3 times again). I had even bigger fps variance in the other games, especially at the 640x480 resolution. Nothing else was changed. Used exact same drivers and testing environment (Abit BX6 rev 2.0, 1.1Ghz Pentium 3 @ 100Mhz FSB, MSI adapter, 256MB of PC100 RAM). If you look closely, the chips on both cards are exactly the same. Is it because the vram chips are different on both boards? If so, what's the difference and what can I identify it by other than physical size? Or is it because the bios chip being slightly different?
* the bottom board has two more vram chips on the back side.