Well, I took the leap and bought a 3rd gtx 260 (core 192). Unfortunately my performance is less than I had expected. I'm not completely sure that I have the whole rig setup right and was hoping that some of you could give me hints/suggestions for proper setup of this system.
The performance is lower than I had expected given the scaling that I have seen from tri sli reviews. For example in the tomshardware test of the gtx 260's tri sli the scaling for gtx 260's in tri sli gave almost 60fps. (see: http://www.tomshardware.com/reviews/geforce-core-216,2120-3.html Yes I do realize that these are core 216's and they are on a core i7, but still i doubt that the performance difference would be that massive...
My results were:
In crysis, (Very High, 1920x1200, no AA or AF) 2 way sli: 35 fps 3 way sli: 42 fps
My specs are:
CPU - q9450 2.66 intel core 2 quad OC'd to 3.55
RAM - 4 gigs corsair ram pc8500 1066mhz oc'd to 1110mhz
Motherboard - 780i evga mobo (using built in sound)
Video Card(s) - 3 way sli gtx 260's (driver version 186.08 beta drivers. clean install)
Harddrive - 500gb seagate harddrive 7200rpm
PSU - corsair HX1000 (1000w psu)
Case - antec 1200
Monitor - samsung 24" 1920x1200 2443bwx
EXTRA INFO: DO NOT READ BELOW THIS LINE IF YOU DONT WANT TO:
things i have already tried:
1. reinstalling videodrivers
2. changing settings for rendering modes in nvidia control panel
3. checked temperatures for videocards.... temps fine
4. making sure that settings in crysis are identcal to the test they used
5. ocing cpu (helped some)
6. ocing ram (also helped)
7. tried multiple nvidia drivers (all from 181 and up)
8. tried modifying various settings using nhancer
9. tried ocing the cards (helped some, but only one to two fps)
10. banging head against wall and screaming at computer
The performance is lower than I had expected given the scaling that I have seen from tri sli reviews. For example in the tomshardware test of the gtx 260's tri sli the scaling for gtx 260's in tri sli gave almost 60fps. (see: http://www.tomshardware.com/reviews/geforce-core-216,2120-3.html Yes I do realize that these are core 216's and they are on a core i7, but still i doubt that the performance difference would be that massive...
My results were:
In crysis, (Very High, 1920x1200, no AA or AF) 2 way sli: 35 fps 3 way sli: 42 fps
My specs are:
CPU - q9450 2.66 intel core 2 quad OC'd to 3.55
RAM - 4 gigs corsair ram pc8500 1066mhz oc'd to 1110mhz
Motherboard - 780i evga mobo (using built in sound)
Video Card(s) - 3 way sli gtx 260's (driver version 186.08 beta drivers. clean install)
Harddrive - 500gb seagate harddrive 7200rpm
PSU - corsair HX1000 (1000w psu)
Case - antec 1200
Monitor - samsung 24" 1920x1200 2443bwx
EXTRA INFO: DO NOT READ BELOW THIS LINE IF YOU DONT WANT TO:
things i have already tried:
1. reinstalling videodrivers
2. changing settings for rendering modes in nvidia control panel
3. checked temperatures for videocards.... temps fine
4. making sure that settings in crysis are identcal to the test they used
5. ocing cpu (helped some)
6. ocing ram (also helped)
7. tried multiple nvidia drivers (all from 181 and up)
8. tried modifying various settings using nhancer
9. tried ocing the cards (helped some, but only one to two fps)
10. banging head against wall and screaming at computer