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7900GT in SLI - CPU Bound?


New Member
Jul 18, 2007
809 (0.21/day)
Almonte, Canada
System Name Sonny Boy
Processor Q9550 3.8GHz 450X8.5 @ 1.3 Vcore
Motherboard ASUS P5Q-PRO
Cooling OCZ Vendetta 2 - lapped and MX2
Memory 2 X 2GB OCZ Reaper PC2-8500 1080MHz 5-5-5-15-2T 2.1V
Video Card(s) 5870 Eyefinity + GT 240 Physx
Storage WD Caviar Black 640
Display(s) 3X AOC 23" 1920X1080 = 5760X1080
Case HAF922 - 3X 200mm fans
Audio Device(s) Onboard - whatever
Power Supply Ultra LSP 750W
Software Windows 7 Professional 64 bit
I am in the process of upgrading (as in I have ordered the parts and now I am waiting for the delivery guy :)

I will be installing an E2180 on an ASUS P5N32SLI Premium board with an OCZ Vendetta heatsink, 2 X 1GB OCS PC6400 4-4-4-12 memory, and a pair of 7900GT cards in SLI. Power comes from an Ultra Xfinity 600W SLI power supply. The 7900GT's have been volt modded to 1.5V and are running at 650/1700 at the moment with Zalman VF900 heatsinks. I plan on lapping the E2180 and the heatsink and have pretty good airflow in my Antec SLK3800 case with 120mm inlet and exhaust as well as an 80mm side port.

My question is, with these 7900GT's running in SLI will I be significantly CPU bound if I OC the E2180 up to >3.0GHz? The games I play mostly are BF2, BF2142, and GRAW.

Any comments or suggestions welcome.


New Member
Jan 22, 2008
288 (0.08/day)
System Name Stealth Mk III
Processor Intel i7 950 @ 4.2GHz @ 1.38v
Motherboard Asus Sabertooth X58
Cooling Swiftech Apogee XT, Koolance NX580, 1x SR-1 120.4, 2x RX 120.2 rads
Memory 3x2Gb Corsair Dominator DDR3 PC3-12800C8
Video Card(s) Sli Evga 3Gb GTX 580's @ 825/1650/2025 @ 1.088v
Storage OS: 240Gb Vertex 3, Steam: 120Gb Vertex 2E, Storage: 1Tb F3, Backup: 1TB F1
Display(s) Samsung SM 2493HM
Case LD Cooling PC-V8
Audio Device(s) X-Fi Titanium
Power Supply Antec High Current Pro 1200w
Software Windows 7 Pro 64
Benchmark Scores 3DMark11 - P12324 / Vantage - P50183
Not sure, i have the 7900gtx and thought about sli but no one seems to sell them anymore