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Windows 7: i7-875k Overclocking help please

08 Aug 2010   #1
loquacious

Windows 7 7600 SP1 64 Bit dual boot Windows 8 CP
 
 
i7-875k Overclocking help please

I have an i7-875k and gigabyte p55A-ud7 motherboard .. both of which I was told are great for overclocking. I have tried just a small overclock with no success .. I cannot get it to boot into windows . I have tried upping the multiplier from 22x and tried upping the bclk from 133 to 135 still no go on the boot. What do I have to do to get some sort of OC ... it is something I want to do now just to prove I can lol.

I am using a corsair H50 cooler and my temps are not a problem. Any ideas are welcome.


My System SpecsSystem Spec
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09 Aug 2010   #2
loquacious

Windows 7 7600 SP1 64 Bit dual boot Windows 8 CP
 
 

Well after a lot of blue screens I have managed to get it running at 3.920 ghz from its stock speed of 2.93 ghz it seems stable after doing a few tests.
My System SpecsSystem Spec
09 Aug 2010   #3
Tews

64-bit Windows 8.1 Pro
 
 

with that much of an oc, be sure to keep an eye on your temps...
My System SpecsSystem Spec
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09 Aug 2010   #4
sygnus21

Windows 10 Pro
 
 

Since you have a gigabyte board check here for you OC tweaks.... GIGABYTE
My System SpecsSystem Spec
11 Aug 2010   #5
loquacious

Windows 7 7600 SP1 64 Bit dual boot Windows 8 CP
 
 

Update
By decreasing the multiplier to 20X but increasing the BCLK to 200mhz I am now running at 4 ghz on a 2.93 ghz chip. Been running fine for couple days now. I left all other settings on "auto".
My System SpecsSystem Spec
12 Aug 2010   #6
sygnus21

Windows 10 Pro
 
 

Have you run any stress programs like Prime95 Download - Softpedia? Have you checked your load temps - Real Temp - CPU temperature monitoring

It's one thing to run at 4gig with the system doing nothing, it's entirely another thing to run at 4gig with a load at reasonable temps.

Have a look at this thread... https://www.sevenforums.com/overclock...overclock.html

BTW this usually doesn't mean stable....

Quote   Quote: Originally Posted by loquacious View Post
I left all other settings on "auto".
If you're OC to 4gig, "auto" usually equals unstable as you'd normally have to "manually" up some voltages.
My System SpecsSystem Spec
12 Aug 2010   #7
josef613

Windows 7 Ultimate 32-Bit
 
 

The ram ratio is also something to make sure of. Some gigabyte boards have a preset setting you select according to your fsb.
My System SpecsSystem Spec
12 Aug 2010   #8
loquacious

Windows 7 7600 SP1 64 Bit dual boot Windows 8 CP
 
 

Under load ... Prime 95 after couple of hours still running fine with temps reaching just on 75 degrees. Also used Linx with no problems have benchmarked with Vantage and Furmark all ran with no problems. Monitored temps with both core and real temps. My ram is running at 1600. Am getting Corsair H70 as soon as they come in stock and also replacing stock case fans with coolermaster 140mm ones to help with airflow.
My System SpecsSystem Spec
12 Aug 2010   #9
sygnus21

Windows 10 Pro
 
 

Well... than it sounds like you're good

Can you post your setting on how you got 4gig?

Thanks
My System SpecsSystem Spec
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 i7-875k Overclocking help please




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