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4Ghz To 4.2GHz? - Page 2

post #11 of 38
Quote:
Originally Posted by $ilent View Post
hmm depends on your motherboard bios options.

But definitely go for the 21 multiplier, 200 bclk, and set ram to 1333 or lower. Im not sure what you mean by how can I reach this speed, do you mean you think your cpu wont let you, or your not sure how to put those settings in?
deffinatly because of the multi , i think 21x200 could work .. the 7.5ghz qpi link is where ur system is hitting the wall , needs to be lower .

thanks for the rep btw bradley , atleast some people around here appreciate help when its given =)

hope it works out for ya .
Edited by Xristo - 4/22/11 at 5:49pm
    
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post #12 of 38
^Just leave qpi to AUTO and UCLK to double ram speed.
post #13 of 38
Thread Starter 
Quote:
Originally Posted by $ilent View Post
hmm depends on your motherboard bios options.

But definitely go for the 21 multiplier, 200 bclk, and set ram to 1333 or lower. Im not sure what you mean by how can I reach this speed, do you mean you think your cpu wont let you, or your not sure how to put those settings in?
I can't just set the memory to 1333. I need my bclk to be at 220 for my memory to be at 1333mhz. if i change the memory multi from x6 to x8 the RAM run at 1700 or something, which is too high. To get the memory higher, i would need to reduce the CPU to 3.67 and set the ram at x8 for 1333.

If it's not possible to acheive a BCLK of 220 then how else do i get the CPU stable at 4.2Ghz and still achieve RAM speeds closer to 1333. My ram can do no higher than 1400 btw.

Edit: I can;t get QPI any lower unless i underclock the CPU. Auto setting is x36! And x36 is the lowest.

ok so yeah if i try 21x200, what voltages do i need to increase and what to? Thank you
Edited by BradleyW - 4/22/11 at 6:08pm
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post #14 of 38
ah ok

on my bios, memory goes up in like 150mhz increments if i remember correctly, and qpi I literally just type Auto and leave it at that.

If your going for 21x200, id expect voltages of at least 1.34v.

My 920 does, or used to only need 1.30v (1.28v in windows), but anything over 4ghz and it needs huge increases in volts, talking increased from lke 1.30 to 1.35+

The heat increase wasnt worth it in my opinion. But it just depends on your chip bradley, go for 21x200 and use same volts for 4.0ghz see if it loads into windows. All i can suggest is try that, if it loads, then go onto intel burn test, use maximum stress test, 8 threads, ALL available ram and 20 passes.

If it fails at any point, go back and increse volts, up to maximum of 1.38/1.40.
post #15 of 38
Thread Starter 
What is the highest temp i should let it go to in IBT? 80c?
I get 70c right now in IBT but in games i only hit 55c like metro 2033 max out!
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post #16 of 38
Yeah id suggest 80c or thereabouts max, dont forget IBT is the absolute max your cpu will be pushed, unless you do folding@home your cpu temps generally wont go as high as those experienced while burn testing.
post #17 of 38
Thread Starter 
Quote:
Originally Posted by $ilent View Post
Yeah id suggest 80c or thereabouts max, dont forget IBT is the absolute max your cpu will be pushed, unless you do folding@home your cpu temps generally wont go as high as those experienced while burn testing.
I know
I've given rep. I will not go above 80c and i will try 1.3v in the bios (from 1.26) and see what happenes there at 4.2Ghz. This should also keep my QPI where it is as the bclk is not being changed. Is my in game temp good in your opinion? Metro is very heavy when fully max out. 55c on the CPU.
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post #18 of 38
yeah 55C in game is very good, heck mine idles at around 48C at the minute...dam I need to lower the vcore :/
post #19 of 38
Thread Starter 
Yeah now the sun is out in England during the day, my temps rise by at least 5c on idle. At night, the idle temp is back to 38c, 70c stressed, 55 in game

I will try today for the 4.2GHz. If it can run ibt max out for 2-3 hours then it's ready to test over night.
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post #20 of 38
^ cleaned my pc out today, took 10% off my temps, cpu idles at 40 now, goes to bout 80 in intel burn test, also dropped my vcore to 1.30 (1.28 windows)
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