VCore in BIOS vs CPU-Z Voltage

[SHIFT_nismo]

Hey Guys,

I am attempting to overclock my Q6600 to 3.6GHz, I can get it to boot up and run about 5 minutes of prime95 small FFTs, then it reboots.

I have my CPU Voltage set to 1.5v in the BIOS but CPU-Z reads 1.464 at idle, and 1.424 under load.

My question is, should I go by the BIOS setting which is already at 1.5v or go by CPU-Z?

Going by CPU-Z would allow me to increase the VCore above 1.5v to get CPU-Z to read higher which could result in stabilizing my system without going over the actual 1.5v intel recommends.

 

[sirmonkey1985]

go by what cpu-z saying.. because cpu-z is giving the correct reading of the vcore.. the bios isnt compensating for the vdroop..

 

[SmokeRngs]

The BIOS has nothing to do with compensating for vdroop. vdroop changes depending on the load the processor is under. Yes, it's safe to go with a higher voltage setting in the BIOS as long as the voltage after vdroop stays under 1.5. I have all three of my Q6600s set to more than 1.5v in the BIOS. All of them stay around 1.42v after vdroop while under full load which is where they sit at all times.

 

[SHIFT_nismo]

Awesome, that's just what i needed, i set it to 1.52500V and it reads 1.488v in cpuz at idle and 1.432v at full load, been running Prime Small FFTs for the last hour and its stable!

[B]Timings[/B]
[B]Multiplier (X)[/B]	9
[B]CPU MHz[/B]	3600
[B]Linked[/B]	Y
[B]Synced[/B]	Y
[B]FSB Ratio/Bus Speed[/B]	400Mhz
[B]DRAM Ratio[/B]	1:1
[B]QDR MHz (FSB)[/B]	1600
[B]MEM MHz (DRAM)[/B]	800
[B]CL[/B]	5
[B]tRCD[/B]	5
[B]tRP[/B]	5
[B]tRAS[/B]	15
[B]tRC[/B]	auto(22)
[B]tRef[/B]	auto(7.8uS)
[B]CR/CDM (1T/2T/A)[/B]	2T

[B]Voltages[/B]
[B]Vdroop[/B]		With Vdroop		
[B]CPU Core[/B]	1.52500V
[B]CPU FSB[/B]		1.350V
[B]RAM / Memory[/B]	 2.100V
[B]SPP[/B]		1.40V
[B]MCP[/B]		1.550V
[B]HT[/B]		1.25V
[B]AUX / CPU PLL[/B]	1.6V

[B]Temps[/B]
[B]Core #1[/B]
Idle	32
Load	63
[B]Core #2[/B]
Idle	32
Load	63
[B]Core #3[/B]
Idle	30
Load	60
[B]Core #4[/B]
Idle	27
Load	60

See anything that might be excessive?

 

[ShuttleLuv]

Software still is not 100% accurate, so go with a digital reading for accuracy. Cpu-Z is good for showing what the software picks up under load though.

 

[SHIFT_nismo]

That's one of the features I like about that ASUS Rampage II Extreme, it has those leads you can hookup your volt meter to.