| AOpen 6600GT: Mixing Orange Copper with Black PCB |
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Page 2 of 8 Overclocking Performance: Our goal was to find the limit of on-board memory and the GPU/VPU separately. This would eventually lead to maximum overclock yields. We slowly started increasing the memory, usually in 10MHz increments, and tested our new settings by running few loops of Doom III, Far Cry, and HL-2 games. If either one of our demos failed or if we noticed rendering issues with the card, we decided to back down. Patiently, we found the maximum overclocking potential on the AOpen 6600GT. Next in line was the GPU itself. We applied the same testing and burning methodology to make sure our overclocks were stable and reliable throughout various demos that we had selected for these experiments. Once again, we slowly reached to stable speeds and determined it to be the highest possible frequency that it could reach. The overclocking aspect of the card wasn’t anything extraordinary either. Like the other 6600GT graphics adapters, we were able to overclock the card from its stock 500MHz core/memory to 587MHz core and 589MHz memory. This yields to 17.4 percent increase from stock speed with core and 17.8 percent increase in default memory speed. Even though the heatsink and the fan combo performed well enough to sustain such overclocking speeds, the build quality wasn’t as great we would’ve accepted. However, the unfortunate facet of many midrange cards is that companies don’t put as much effort in quality assurance as they do with their high-end adapters. Hopefully, as the heat output increases with upcoming midrange GPUs, they won’t express the same flaky issues with heatsinks like their counterparts.
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