I recently bought an XFX ATI Radeon HD 5770 card to replace my very old NVidia card. After installing the card and the latest drivers I noticed that it was a bit laggy. I started up an older game (Call of Duty: Modern Warfare 2) which ran fine with my old card and it was also having laggy spikes, especially when starting up a new mission.
I updated my BIOS and it didn't help. I also made sure that all of the old NVidia drivers were completely removed.
Any other suggestions?
Here are my specs:
Intel Core 2 CPU 6600 @ 2.4GHz 2GB RAM Windows 7, 64 bit Gigabyte GA-965P-DS3 motherboard
If there's anything else that will help, please ask.
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I realized that I left out some potentially important information... my power supply is an ATX12V 380W. I've seen a lot of posts here and elsewhere that the Radeon card has high power requirements. Could this cause the laggy behavior that I'm seeing?
Another update... I replaced my power supply with a 600W power supply and it didn't help.