On 2/1/13 I installed my 2nd Radeon 4890 so now I'm running w/crossfire. I was currently getting avg. 20 - 28 FPS with one radeon 4890 but now I'm avg. 100- 120 fps with 2 Radeon 4890's. I didn't think it was possible to run more then 60 fps. I've owned this system for 2.5 years and never seen this kind of performence out of it. I ran this same setup 1 year ago and didn't see this kind of performence out of it. Anyone have any idea what could have cause the increase in performence. Everything is 100% the same as it was 2.5 years ago.
2x radeon 4890
Phenon II 955 black edition 3.2
32 bit os
asus M4a78e Mobo
3 x 240 mm
1 x 200 mm
2 x 120 mm
Well as I read your post, I would guess that the addition of the second radeon is the reason...
Also, windows does updates when it needs to and it may have updated your drivers...
Are these 2GB cards?
You might also look at jumping to 64bit os as most of your memory is just lost because 32bit os can't use anything above 4GB...
Well, if the hardware hasn't changed, and the drivers haven't changed that leaves only the software(application) has that changed? either that or you really weren't utilizing the vid cards in crossfire last year like you thought..Something had to change to get that big an improvement..