I've just replaced my pre-existing X1300 card with a shiny new HD 4770 and am having severe doubts as the speed of my screen updates has halved! (Catalyst version 9.4).
To achieve the upgrade I also had to upgrade my PSU (it was only 300W, yet the the MSI MS-7184 motherboard states it requires a minimum of 350W) to a 550W model but this has had no effect and whilst the Windows Experience (under Vista HP) has leapt from 4.0 to 4.9 (now held back by the Athlon 64 X2 4200+ processor) real-life screen updates have slowed to a crawl.
The BIOS is set to PCI-E for graphics (rather than PCI under the X1300) but even swapping this back has no effect. What is noticeable, however, is that Core2 of the processor is running at virtually 100% all the time, even when the system is idle.
The PCI-E in the board is x16 (not 2.0) but this shouldn't be a problem, should it?
Has anyone else managed to improve graphics performance with this motherboard or computer and, if so, with what? Or am I simply missing something?