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Having Problems with 670 FTW Overclock.

post #1 of 5
Thread Starter 
Hi guys, I have two GTX 670's in SLI and I have been trying to OC them. They run stock at 1006 core clock, and 1084 mem clock.

Right now I have them set up in Precision X at 145% power and +80 core and +250 mem. They pass furmark and unigine heaven, but my system keeps freezing when playing games for awhile, so I'm a bit confused. Is the OC just not stable?

They are in my sig rig system. The only thing I can think of is maybe my 750w Corsair power supply is having trouble supplying power because both cards never went above 70c at 80% fan in furmark, so I highly doubt it's from overheating.
post #2 of 5
Corsair is good and should keep up with those cards. Try overclocking core as high as possible, and then the memory a descent amount. I'd drop the mem to get it stable. If nothing helps, then maybe the power supply is problematic.
 
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BitoHeaven
(16 items)
 
Cigar ATX PC
(14 items)
 
CPUMotherboardGraphicsGraphics
Intel i7 4770k @ 4.5GHz Asus Maximus VI Gene Gigabyte R9 290 @ 1160MHz/1350MHz Gigabyte R9 290 @ 1160MHz/1350MHz 
RAMHard DriveHard DriveOptical Drive
G.Skill Trident X 2X8GB DDR3 2400MHz Samsung 840 PRO 256GB  Seagate Barracuda 7200.14 3TB SATA III 6Gb/s 64... Pioneer Blu-ray Burner 
CoolingOSMonitorKeyboard
Liquid Single Loop Triple Radiators Win 7 SP1 Professional x64bit  Samsung SynchMaster 24" Widescreen 1200p TFT-LC... Logitech G15 
PowerCaseMouseMouse Pad
EVGA SuperNOVA G2 1300w 80+ Gold Fully Modular  Fractal Design Arc Midi R2 Microsoft Sidewinder X5 Allsop Redmond Mouse Pad 
Audio
Cambridge Soundworks 5.1 
CPUMotherboardGraphicsRAM
Intel Core i5-3570K @ 4.6GHz ASRock Z77E-ITX mITX  Sapphire HD 7990 @ 1090MHz/1600MHz G.SKILL Ripjaws 2X4GB DDR3-1600 @ 1866MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial SSD 128GB mSATA SATA III 6GB  Seagate Barracuda 7200.12 1TB SATA II 32MB 7200RPM LG DVD R/W SATA with LightScribe Corsair Cooling Hydro Series H100 
OSMonitorKeyboardPower
Win 7 Professional x64bit Samsung 52" 1080p 60Hz LCD Logitech Wireless K330 Corsair AX850 Gold Fully Modular 
CaseMouseMouse PadAudio
BitFenix Prodigy Mini-ATX Black  Logitech Wireless M215 Corsair Vengeance MM200 Yamaha RX-V681 & PSB/Polk Audio 5.1 
CPUMotherboardGraphicsRAM
AMD Athlon II X4 640 ASRock N68C-GS NVIDIA 6600GT G. Skill Ripjaws DDR3 1600MHz 
Hard DriveOptical DriveCoolingOS
WD Caviar Blue 500GB 16MB Cache 7200RPM LG Optical Drive Thermaltake Max Orb Windows 7 
MonitorKeyboardPowerCase
Viewsonic 19” Flatscreen CRT Gigabyte GK-K6800 103  Thermaltake TR2 600W Cigar Boxes 
MouseMouse Pad
Zalman ZM-M300 Corsair Vengeance MM200 
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post #3 of 5
Thread Starter 
Thanks, I'll try that out.
post #4 of 5
Thread Starter 
Well I tried what you said. I got the core clock up to +110, at +120 I got a Windows Time Out Error and OpenGL crash. Then I put the memory up to +150. No problems in Furmark, no problems in Unigine Heaven, but Farcry 3 crashed like 3 minutes in, this time it was just the application that crashed.

So I drop the mem clock down to +100, and the same thing happened. So I'm just at a loss. I guess I'll just give up for now, lol.
post #5 of 5
Far Cry 3 seems to be very stressful on overclocked cards (lots of reports of overclocks failing when they are stable otherwise) so I'd try backing the core clock down some and see if it persists. I'd lean toward core stability if you are getting application crashes - I think memory issues is more often artifacting instead of crashing.
Edited by Forceman - 12/10/12 at 12:41pm
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