mohawk May 23, 2006 Share mohawk Member May 23, 2006 Alright you techies, I need some help. In my box, I have an AMD +4400 and 2 7900GT's. When I have SLI enabled, I score approx 8000 on 3dmark06, get approx. 65fps in GR:AW and 150fps in the CSS video stress test with everything maxed out. When I disable SLI, I get a much lower 3dmark06 score, approx 45fps in GR:AW BUT 175fps in the CSS video stress test with everything maxed out. I gave you the details to rule out "SLI is not operating properly." The 3dmark06 and GR:AW benchmarks prove that it is. I've heard some rumors around that the HL engine doesn't work well (optimize) duel cards. Has anybody else ever experienced this or come across something similar? Solutions I've tried: Reinstalling CS:S, and new beta drivers (9.28 and 8.43 tested). Link to comment Share on other sites More sharing options...
Cujo May 23, 2006 Share Cujo Member May 23, 2006 (edited) you've probably just hit the limit of your cpu. the lower results with two would make sense given the cpu overhead that sli requires. you should a ) oc your cpu or b ) buy a cpu more suited to your high endish rig. edit - stupid emoticons when you put b and a bracket... Edited May 23, 2006 by Cujo Link to comment Share on other sites More sharing options...
Cobalt May 24, 2006 Share Cobalt Member May 24, 2006 (edited) Is your processor affinity set to only run CSS on one of the cores? Did you do the AMD registry hack for dual core processors? Edited May 24, 2006 by Cobalt Link to comment Share on other sites More sharing options...
mohawk September 18, 2007 Author Share mohawk Member September 18, 2007 (edited) found this interesting.. same hardware as before, but now running (as of today - http://www.newegg.com/Product/Product.asp?...N82E16824001096 ) at 1680 x 1050. Video stress test in source running off 1 7900 - 165 fps Video stress test in source w/ SLI enabled - 190 fps edit - wow.. may 23.. i haven't upgraded any of my components for a while! Edited September 18, 2007 by mohawk Link to comment Share on other sites More sharing options...
Tek-Almighty September 19, 2007 Share Tek-Almighty Member September 19, 2007 So...what exactly did you learn? I know that earlier (don't ask me how much) source engine did not get along well with SLI. meh. Link to comment Share on other sites More sharing options...
Cujo September 19, 2007 Share Cujo Member September 19, 2007 well i assume you're running a higher resolution. what was your old res? your sli is probably more optimized for that res. you haven't changed anything else? source stress test is much more gpu intensive then actual in game. hmm, i haven't run a stress test in a while. let me go see what i get. Link to comment Share on other sites More sharing options...
dragonfly September 19, 2007 Share dragonfly Member September 19, 2007 (edited) The other day with everything maxed out (@ 1920x1200)I think I got like a 149fps or something like that. 7900gtx only, but cpu is at 3.3 Edited September 19, 2007 by DarkArchon Link to comment Share on other sites More sharing options...
mohawk September 19, 2007 Author Share mohawk Member September 19, 2007 yeah - to summarize Stress Test 1280 x 1024 - w/ 1 card - 150 fps 1280 x 1024 - w/ SLI - 175 fps 1680 x 1050 - w/ 1 card - 165 fps 1680 x 1050 - w/ 2 card - 195 fps all other components the same Link to comment Share on other sites More sharing options...
anonymo September 19, 2007 Share anonymo Member September 19, 2007 yeah - to summarize Stress Test 1280 x 1024 - w/ 1 card - 150 fps 1280 x 1024 - w/ SLI - 175 fps 1680 x 1050 - w/ 1 card - 165 fps 1680 x 1050 - w/ 2 card - 195 fps all other components the same Native resolution of your LCD is 1680x1050...there is your answer. Native res takes stress off both your PC CPU and you monitor CPU. On my old 17" 1280x1024 LCD with my Radeon 9200 I would get horrible (sub 20) FPS at anything lower than the native resolution (1280x1024) like 1024x768 or 800x600 but when I set it to the native resolution of the LCD I got a solid 60+ Same thing now with my 24" 1920x1200 LCD and my 7600GS, any other resolution causes scaling to be processed on both ends (PC and LCD) and will lower my FPS considerably (which is bad enough as it is at 80-85fps) On another note, didn't we discuss the problem with rendering more frames per second that your monitor can actually handle? At anything over 120 FPS there's always going to be frames that are rendered but not displayed on an LCD...bah this is a whole other topic.. Link to comment Share on other sites More sharing options...
mohawk September 19, 2007 Author Share mohawk Member September 19, 2007 yeah - to summarize Stress Test 1280 x 1024 - w/ 1 card - 150 fps 1280 x 1024 - w/ SLI - 175 fps 1680 x 1050 - w/ 1 card - 165 fps 1680 x 1050 - w/ 2 card - 195 fps all other components the same Native resolution of your LCD is 1680x1050...there is your answer. Native res takes stress off both your PC CPU and you monitor CPU. On my old 17" 1280x1024 LCD with my Radeon 9200 I would get horrible (sub 20) FPS at anything lower than the native resolution (1280x1024) like 1024x768 or 800x600 but when I set it to the native resolution of the LCD I got a solid 60+ Same thing now with my 24" 1920x1200 LCD and my 7600GS, any other resolution causes scaling to be processed on both ends (PC and LCD) and will lower my FPS considerably (which is bad enough as it is at 80-85fps) On another note, didn't we discuss the problem with rendering more frames per second that your monitor can actually handle? At anything over 120 FPS there's always going to be frames that are rendered but not displayed on an LCD...bah this is a whole other topic.. i understand what you're saying - however, first test was done on a 19" w/ native resolution, second on a 22" w/ native resolution. Link to comment Share on other sites More sharing options...
Cujo September 20, 2007 Share Cujo Member September 20, 2007 yeah - to summarize Stress Test 1280 x 1024 - w/ 1 card - 150 fps 1280 x 1024 - w/ SLI - 175 fps 1680 x 1050 - w/ 1 card - 165 fps 1680 x 1050 - w/ 2 card - 195 fps all other components the same Native resolution of your LCD is 1680x1050...there is your answer. Native res takes stress off both your PC CPU and you monitor CPU. On my old 17" 1280x1024 LCD with my Radeon 9200 I would get horrible (sub 20) FPS at anything lower than the native resolution (1280x1024) like 1024x768 or 800x600 but when I set it to the native resolution of the LCD I got a solid 60+ Same thing now with my 24" 1920x1200 LCD and my 7600GS, any other resolution causes scaling to be processed on both ends (PC and LCD) and will lower my FPS considerably (which is bad enough as it is at 80-85fps) On another note, didn't we discuss the problem with rendering more frames per second that your monitor can actually handle? At anything over 120 FPS there's always going to be frames that are rendered but not displayed on an LCD...bah this is a whole other topic.. is that a fact? i've never heard this before. where'd you come by it? Link to comment Share on other sites More sharing options...
Cujo September 23, 2007 Share Cujo Member September 23, 2007 just ran a little stress test of my own and i got 240fps using the same settings i play css with. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now