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post #21 of 63
Thread Starter 
So far P95 is doing well at over 6.5 hours. I am wondering now if the voltage indicated in the BIOS is wrong. Is that possible. I have it at 1.45v in the BIOS but CPU-Z and Easy Tune 6 register at 1.404 or 1.416 (it fluctuates). My temps are usually in the upper 50's but reached 68 on 2 cores once. So with these temps and the voltage from CPU-Z is it possible the 1.45 is wrong. I thought I read that with a different BIOS you might get different voltages and that if you update the BIOS you should check your voltage again. Does this sound right? Thanks.
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post #22 of 63
Quote:
Originally Posted by Kent10 View Post
So far P95 is doing well at over 6.5 hours. I am wondering now if the voltage indicated in the BIOS is wrong. Is that possible. I have it at 1.45v in the BIOS but CPU-Z and Easy Tune 6 register at 1.404 or 1.416 (it fluctuates). My temps are usually in the upper 50's but reached 68 on 2 cores once. So with these temps and the voltage from CPU-Z is it possible the 1.45 is wrong. I thought I read that with a different BIOS you might get different voltages and that if you update the BIOS you should check your voltage again. Does this sound right? Thanks.
Hey what version of prime95 r u running? Do u have HT on for 4.7Ghz?
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SL
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post #23 of 63
Thread Starter 
I am using the latest beta P95 26.4 Yes HT is enabled.
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Intel i-7-2600K at 4701 MHz Gigabyte P67A-UD7-B3 MSI N460GTX Cyclone 768D5/OC G.Skill Ripjaws 2X4GB DDR3 2000 
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post #24 of 63
Quote:
Originally Posted by Kent10 View Post
So far P95 is doing well at over 6.5 hours. I am wondering now if the voltage indicated in the BIOS is wrong. Is that possible. I have it at 1.45v in the BIOS but CPU-Z and Easy Tune 6 register at 1.404 or 1.416 (it fluctuates). My temps are usually in the upper 50's but reached 68 on 2 cores once. So with these temps and the voltage from CPU-Z is it possible the 1.45 is wrong. I thought I read that with a different BIOS you might get different voltages and that if you update the BIOS you should check your voltage again. Does this sound right? Thanks.
That's the nature of electronics there. Put a load on something and the voltage droops. LLC (load line calibration) is there to control how that is done, and that's what separates the good mobos from the bad, quality of vdroop control.

My understanding is when someone says "Well my chip does 5Ghz @ 1.4V", the 1.4V is at *load*, not BIOS.

So yes, 1.45 down to 1.404 or 1.416 sounds exactly right for putting a load like P95 on the chip.
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post #25 of 63
Thread Starter 
ugotd8: Thanks for the explanation. P95 still going at 10 hours now. It looks promising.
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post #26 of 63
Kent, if possible, I would find ThrottleStop and run it while P95 is running. Check the FID column, all 8 threads should say 47.00, if they don't your CPU is being throttled. Not wanting to rain on your parade or anything, it just occurred to me.
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post #27 of 63
Thread Starter 
OK thanks for all of your help. I have read a little about throttling but I don't really understand the implications for the CPU so I will have to look into it.
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My System
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CPUMotherboardGraphicsRAM
Intel i-7-2600K at 4701 MHz Gigabyte P67A-UD7-B3 MSI N460GTX Cyclone 768D5/OC G.Skill Ripjaws 2X4GB DDR3 2000 
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post #28 of 63
Throttling could very well be happening right now on your CPU if you haven't raised the TDP levels. So, your thread could be running at say 4200MHz instead of 4700MHz, which sounds likely since your temps are so low and you are passing P95 at a load vcore that I can't pass P95 with the same chip.

http://www.xtremesystems.org/forums/...2&postcount=68
PoorHouse
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PoorHouse
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post #29 of 63
Thread Starter 
It does say 4689 MHz in CPU-Z but what you are saying is that it might not be the same for all 8 threads. Another reason my temps could be low (I hope) is that the ambient temp in my room is in the mid 60's and I have great cooling with the Noctua, Tuniq TX-4 and the HAF X case. Once P95 is completed, my goal 24 hours, then I will try the Throttlestop with it.
My System
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CPUMotherboardGraphicsRAM
Intel i-7-2600K at 4701 MHz Gigabyte P67A-UD7-B3 MSI N460GTX Cyclone 768D5/OC G.Skill Ripjaws 2X4GB DDR3 2000 
Hard DriveOSPowerCase
Intel 120GB X25-M G2 SSD | Hitachi 3TB 7K3000 Windows 7 Ultimate 64 Bit Corsair AX850 Cooler Master HAF X 
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My System
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CPUMotherboardGraphicsRAM
Intel i-7-2600K at 4701 MHz Gigabyte P67A-UD7-B3 MSI N460GTX Cyclone 768D5/OC G.Skill Ripjaws 2X4GB DDR3 2000 
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post #30 of 63
I'm saying cpu-Z could be saying one thing and your cores are all running at a reduced speed while P95 is running. I've seen it. On my system. Today. :-)
PoorHouse
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PoorHouse
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