Need advice on VID cpu-z E8400 4.2 ghz

[jerryt74332]

I am a little concerned with my ASUS P5k-vm mother board. I am running a E8400 @ 4.2 ghz 466x9 it is stable under prime 95 for 24+ hours on water cooling H2O-220 compact. 58C under load.

This is the problem:

When I first started this setup I ended up using 1.4V under the bios for core. CPU-Z read 1.302 to 1.310 at 100% load, after 3 days of 100% load on cpu for folding at home I checked again and it was running 1.263 V under cpuz. What Gives? Are the voltage regulators slowly dying?

asus p5k-vm NB temp 40C with fan on it
e8400 @ 4.2 water cooled H2O-220 compact
gskill ram ddr2 800 @ 932 5-5-5-15 2.0v 37C temp
320 gb segate sata drive
ati 4870 gpu
thermal take true power 750W PSU

 

[MrCommunistGen]

That's not exactly a high end motherboard, and it only looks like it has 3 phase voltage regulation. For an E8400 you probably don't need TONS of voltage regs, but if you were planning on OCing that high I probably would have gone for at least a 4-phase motherboard. I probably would have tried to get one that didn't use integrated graphics because it's just an extra bit of motherboard logic that can mess up an overclock. You might also check the PSU voltages. After 3 days it may have gotten pretty toasty and the voltages may have dropped a bit at the PSU causing the CPU voltage to drop a bit despite the voltage regs. Lastly: "dying"

-mcg

 

[Lupiron]

Oh, and just so you know VID is totally different from Core Voltage, as you are speaking about. Core voltage is just the amount of voltage to the cores at a given time, easily found with CPUz.

VID is your individual processors starting voltage. After Intel spec VDrop and droop are applied, it is what your chip was tested to run 3.0 Ghz at. (Auto, while at stock results in the VID being entered as the Bios VCore.)

To locate this, disable speed step, C1E and EIST in the bios if you have 'em! And then Down load and run either Real temp, or Core Temp, and run either. They will list your VID.

The range on your 45 NM chip is 1.1000 to 1.2500. Obviously the lower the better when it comes to voltages!

Good luck!

--Lupi

 

[jerryt74332]

Real Temp shows VID at 1.175 Is this the Intel spec for this CPU or is it a reading? Also it shows core temps at 45 and 47 where speedfan shows it at 50 and 53. I guess I will keep it running hard and will post back if it burns. Just money would give me excuse to get a e8600 next time I will pick up a better motherboard, I bought this one from a buddy that needed cash to buy a x48 for his quad core. I will say that this setup is a lot of fun.

 

[Shadow703793]

VID is the voltage Intel tells the CPU needs to run at stock settings. VID can't be changed. Unless you calibrated the SpeedFan according o the C2D Temp guide written by CompuTronix then RealTemp is correct.

For more info on why RealTemp is correct read CompuTronix's explanation(s) here:
http://www.tomshardware.com/forum/forum2.php?config=tomshardwareus.inc&cat=29&post=248039&page=1&p=1&sondage=0&owntopic=3&trash=0&trash_post=0&print=0&numreponse=0&quote_only=0&new=0&nojs=0

 

[jerryt74332]

Just an update, My e8400 @4.19 GHZ is still Alive and well after 1 year of hard service. Not bad for a cheap motherboard.
But Now I am torturing a i7 @ 3.8 lets see if it makes it a year at 70+C at full load.