Graphics card/computer not working as well as it should
I have an intel corei7-920 with 2 radeon hd-4850's, 6gb ram, 2tb hard drive. Firstly the ati catalyst program doesn't look like it's recognizing both graphics cards even though they are hooked up correctly and crossfire enabled is checked. My games get some lag on lower settings and they shouldn't be, and 3dmark 06 only got 6733 marks when it should be much higher.
I also have all the latest drivers and a good power supply. On the windows experience index they all get a 6.9-7.4 except hard disk which is near the maximum but my games are lagging, i put it on performance over quality and it's still lagging when it should be able to handle max settings.
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Some thing noteworthy.. 3dmark still makes terrible scores and games still have lag, but I can turn the quality's and all the settings on maximum in ati catalyst and it doesn't seem to affect performance? It doesn't look like it even made it worse.
Try it with just one of your 4850s in? see if that changes anything