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Discussion Starter · #1 ·
I have a i5-2500k and an ASUS Maximus V Formula mobo. I can overclock to 4.5Ghz stable without touching voltages, but when I want to go above that by increasing the VCore no matter what I set it in the BIOS, when I boot into windows and run prime95 the VCore will not go above 1.256V. I have set it to auto and I have set it to 1.350, no matter what it is HWMonitor says it is only running 1.256V. I have tried all the different BIOS settings I can think of, and I have also reset my CMOS, nothing works. I want to get my VCore to atleast 1.350 and see how far I can take it, because if I can get 4.5Ghz running on under the stock 1.3V that it usually runs at I might be able to get some good speed out of this processor. Also, my PSU is a Corsair TX850M and I am only running a single 770, and my 24pin as well as the 8 and 4 pin on the board are all plugged in, so it is definently getting the power it needs. Additionally, the CPU is staying below 82C, so it shouldn't be throttling because it is overheating (yes I know 82C is pretty hot, I'm getting a better cooler soon).

Screen shots of my BIOS as well as RealTemp and HWMonitor

Scrolling down BIOS
http://i887.photobucket.com/albums/ac79/Hunk1012/IMG_6658_zps0bf95633.jpg
http://i887.photobucket.com/albums/ac79/Hunk1012/IMG_6659_zps8135b1dc.jpg
http://i887.photobucket.com/albums/ac79/Hunk1012/IMG_6660_zps0ec54350.jpg

Advanced>CPU Configuration
http://i887.photobucket.com/albums/ac79/Hunk1012/IMG_6661_zpseec94b0e.jpg

DIGI + Power Control
http://i887.photobucket.com/albums/ac79/Hunk1012/IMG_6662_zps5b8e60d6.jpg

While running Prime95
http://i887.photobucket.com/albums/ac79/Hunk1012/screeny_zps47dedfcf.png

While Idling
http://i887.photobucket.com/albums/ac79/Hunk1012/screen_zps2e5ec492.png
 

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Discussion Starter · #5 ·
It was set to auto, disabling it didn't change anything and neither did enabling it. Idk if it is worth noting or not but running the winrar benchmark makes the VCore go to 1.280 rather than 1.256
 

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Discussion Starter · #6 ·
Okay, strangely if I disable EIST, C1E, C3, and C6 the idle voltage is 1.312V and when I run Prime95 it drops to 1.256V -_- what the hell is going on???
 

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EIST and C1E control the voltage increase in Windows. When the system is idle with no load it reduces your voltage and clock speed down to save power. Your voltage jumped up because there is load on the system from the benchmark. The only thing I can think of is there's something else you need to turn off in the bios. If Asus implemented anything similar to VRD12 like the Gigabyte boards then maybe it is managing the voltage regardless of what you set it to. You don't have like AI Suite install do you? Or any overclock software installed right?
 

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Discussion Starter · #8 ·
No Ai Suite and the only overclocking program is Afterburner for my 770. Also I have tried overclocking before with the same results, although I didn't look into what the VCore was actually running at, when I couldn't break the 4.5Ghz barrier I said screw it and left it, and I have since reformatted windows, so it can't be any programs.
 

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Discussion Starter · #9 ·
It seems as though the VCore setting has no effect on the actual VCore at all because I went and lowered the Manual Voltage down to 1.240V and the VCore still stayed at exactly 1.256V when stressing. Could it be that the BIOS setting just doesn't have an effect on the VCore at all and something else is controlling it?
 
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