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Ray Van Rheenen

Voltage spikes on Asus CH5F

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ok guys I got a question :

Who else uses the CH5F on BIOS 1703 ?

I am getting some weird readings in My probe II log, and I have been getting them for a long time and wondering if others also have the same issues.

below you will see a log copy from probe II :

[01/20/2013 at 07:18 pm] SB 49.751 Abnormal

[01/20/2013 at 07:18 pm] SB 1.111 Normal

[01/20/2013 at 07:49 pm] CPU/NB 49.700 Abnormal

[01/20/2013 at 07:49 pm] CPU/NB 1.330 Normal

[01/20/2013 at 08:03 pm] CPU/NB 1.474 Abnormal

[01/20/2013 at 09:16 pm] SB 49.751 Abnormal

[01/20/2013 at 09:17 pm] SB 1.111 Normal

[01/20/2013 at 10:01 pm] CPU/NB 49.694 Abnormal

[01/20/2013 at 10:01 pm] CPU/NB 1.330 Normal

as you can see I have Voltages spikes but temp-wise it is all okay.

Any one know why it spikes so high and what to do about it ?

(System specs are :

Mobo = Asus Crosshair 5 Formula AM3+ 990FX

CPU = AMD Phenom x2 555 ( unlocked to X4 B55 @ 4.2GHz OC)

RAM = Crucial BallistiX Tactical Tracer DDR3 1600MHZ 4*4 GB

GPU = Asus GTX 660 DirectCU II Top OC

PSU = OCZ 700W Modstream Pro )

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Putting 49v thru a CPU will kill it stone dead regardless of exposure time.

This looks more like a BIOS fluctuation,does Probelt report actual voltage or what the BIOS thinks it is?

I had a similar issue with my 990FX Sabertooth,I just ignored it in the end.

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Do you get random flucations without the overclock?

49v wouldn't just fry the psu, it'd fru the VRMs and north bridge as well.

Where were you measureing with the volt meter?

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Yeah also getting them when I run all hardware on default. I was using the probelt measure points on the mobo but now I am thinking I made a booboo there and picked the wrong points, I remeasured/ monitored and now the spikes only get registered in the software and not by the voltmeter. Will be trying another psu in a few days to be sure it is not my psu that is spiking .

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If it was the PSU spiking it would of killed everything already.

The voltage on board is controlled by the VRM section,they wouldnt tolerate 49v at all.

Its a BIOS thing,if you have access to another PSU,try it and put your mind at rest,I wouldnt worry about it.

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thanks every one for your input.

Tested today with a CM 1300W Silent hybrid PSU and indeed it is the BIOS that is flipping.

The test PSU had been in a similar system except that one has a FX8350.

My probe did report those weird spikes again, so I had put My OCZ psu in the other system to be sure it was not the PSU...after 2 hours of benching it gave no voltage spikes.

Problem solved !!! it is the Asus AI software that gives the weird readings and My PSU is 100% ok.

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