So, I was running a Powercolor HD 4830 512mb card, getting around 25fps on most games on high settings 1680x1050.
I replaced the card with a Sapphire HD 4870 1gb card, and I'm not seeing any improvement on games, and sometimes worse results.
I've completely uninstalled the drivers, reinstalled them, and run CCleaner on the registry. Still nothing.
Here are the rest of my specs:
AMD Phenom X3 8650 triple-core @ 2.3ghz
8gb DDR2-800 ram
Windows 7 Ultimate 64-bit
Sapphire HD 4870 1gb
I guess the CPU could be the bottleneck, but I wouldn't think the 4870 would actually perform worse than the 4830. Oh, one other thing. I was playing Assassin's Creed, and Fraps was showing ~30fps and then jumped to ~100fps for about 10 mins... is my 4870 a dud?
ok well its alot of work, but what i would do is to run some benchmarks like Crysis, 3dmark06, Farcry2 ETC... note the results, then switch back to your 4830 and run the same benchmarks and note the results
That way you can compare results and see whats orruring.
Here are the results of 3dMark Vantage for the 4870 and 4830. The 4870 certainly scored higher on the graphics part of it by 3000 points. I'm just not seeing that in games... Notice that I overclocked the processor a little more between the 2 tests (which I really didn't intend to do)