I then brought the 69 up to 925MHz cores and 1450MHz RAM, increased the voltages from 1.100 volts to 1.175 volts, and gave them +20% power capacity. I disabled the CCC from running at startup, because it attempts to override the overclock settings on other programs (be the Administrator, type "msconfig" in the Start search, hit Enter, go to the Startup tab, find the CCC, uncheck the box, apply the changes, then restart the computer). The BEST program ever! First off, it automatically disables ULPS (a registry key that essentially turns off the second card), allows me to create fan profiles, and gives me control of the core clock/voltage and RAM clock. This increased performance a bit, but I still wanted more. The program wouldn't allow clocks faster than 840/1350. I tried CCC at first, but the 6950 had rather low speed caps. So, I messed with a few overclock programs to find which one had the features I needed. The faster card slowed down to match these settings, losing potential power. The 6950 was clocked at 820MHz core and 1250MHz RAM. This was because of the major clock differences. The 6950 was running at 99% load, but the 6970 was only running at 76%. The performance went up quite a bit (86FPS in Furmark), but I wanted more power. And that was without overclocking! I then put my 6970 back in (Gigabyte 6970 OC edition), and AMD's Catalyst Control Center (CCC) installed the card and automatically enabled Crossfire. After running a cool program that built a BIOS for it with the unlocked shaders (you need Radeon Bios Editor "RBE", GPU-Z, and Ati Winflash, all from Tech Powerup), the Furmark score went up to 52FPS. This (along with many other 6950 2GB cards) is actually a Radeon 6970 with some shader processors locked. It gets a perfect 7.9 on the Windows Experience Index, and it gets around 47FPS on Furmark (no AA, 1600x900). First off, this is a solid card by itself.
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