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Old 05-06-2015, 03:33 AM
ZaieN ZaieN is offline
Join Date: May 2015
Posts: 2
Default e6750 + EVGA 680i SLI Overclocking Troubles

(I've been lurking on these forums for the past few days, but I haven't been able to find someone with the same setup as me. I apologize if there is already a thread on this, please just. point me in the correct direction)

I recently built a new system that was meant to be cheap with lots of over clocking potential. However, I've ran into a wall on my CPU speeds and I was hoping you guys would have some suggestions.


CPU: E6750
Cooler: Zalman 9700
MoBo: EVGA 680i SLI
Ram: 2GB OCZ Platnium Rev 2 DDR2-800
PSU: 550W Antec

I can't seem to reach speeds greater than 3.3ghz. I purchased this particular CPU after reading multiple reports with OC'd speeds somewhere in the 3.6-3.8 range with STOCK cooler and little to no voltage increase.

My current settings are:

FSB (QDR) 1600 (so 400mhz)
Unlinked Mem
Mem 800mhz

CPU CORE: 1.45v
CPU FSB: 1.4v
MEM: 1.9v (stock)
nforce STP: auto
nforce MCP: auto
nforce STP<->MCP: auto

nvidia cpu Ex: enabled
CPU thermal control: disabled
C1E Enhanced Halt State: disabled
Execute Disable Bit: enabled
Virtualiaztion Technology: enabled
ALL spread spectrums are disabled

Temperatures never exceed 100f (38c)

It is stable up to 400mhz FSB, after that it starts to fail SP2004 Orthos. Windows won't even start at 425mhz even with the vCORE set to 1.5v.

I'm not new to overclocking, but I've always done very mild overclocks, perhaps there is something I missed. I've had my system running stable at stock speeds/voltages for a couple weeks with no problems.

Thanks for the help!
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Old 05-06-2015, 07:16 AM
basco basco is offline
Join Date: Nov 2011
Posts: 59

there are 2 steppings for your cpu:G0 + E0 later should be better.
could be that your ram uses a divider thats not liked-so try linked with lowest divider.
long time ago for me so i think ya have to play with ht multiplier and mcp volt.

here is a quick overview:

and here is the long guide from nvidia:
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