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Speed Fluctuation While OCing AMD FX-6100

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March 3, 2012 11:10:56 PM

Hi everyone,

This is my first post here, so bear with me if I'm posting in the wrong place or something along those lines :|.

I just recently got my new FX-6100 and was aiming for a mild overclock of around 4.2GHz and while stress testing I noticed some very strange speed fluctuations. I have everything disabled which to my knowledge could be causing it, namely Cool n Quiet, C States and I set Windows to performance...

At 100% load under Prime95 or AMD Overdrive the CPU seams to go back and forth between 4.2 GHz and 3 Ghz and sometimes on only a few cores and sometimes on all. I'm overclocking simply with the multiplier (21x) and an upped vcore (1.375).

System Specs:
AMD FX-6100
Gigabyte GA-990XA-UD3 (F9 BIOS)
Kingston 8 GB Kit @ 1600 9-9-9-27 1.65v
Sapphire 5870 1 GB Vapor-X
OCZ Vertex 2 60 GB (Boot)
2x WD VelociRaptor 150 GB (RAID 0)
Mushkin 650W PSU


Here's an image of three different readings from Overdrive, CPU-Z and HWMonitor.



Thanks in advance for the help!
a b K Overclocking
March 4, 2012 12:57:20 AM

It's common. Don't worry about it.
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March 5, 2012 3:19:51 PM

DelroyMonjo said:
It's common. Don't worry about it.


Thanks for the reply!
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a b K Overclocking
March 22, 2012 2:16:32 PM

Mind if i Copy your Over Clock Settings for my Sabertooth 990FX and FX 6100?
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a b K Overclocking
March 22, 2012 4:40:32 PM

Its an issue with C1E and how gigabyte controls it (or rather doesn't). The asus sabertooth does a much better job, I never get the multiplier drops and the only thing disabled is C1E and turbo. The gigabyte bios is much easier for inexperienced overclockers, the asus has sooooo many settings, I love it.
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March 29, 2012 6:53:18 AM

Rockdpm said:
Mind if i Copy your Over Clock Settings for my Sabertooth 990FX and FX 6100?


Of course not! I'd be interested to know how it works out :) . To be honest I think the VCore could even go down a bit.


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March 29, 2012 6:57:30 AM

noob2222 said:
Its an issue with C1E and how gigabyte controls it (or rather doesn't). The asus sabertooth does a much better job, I never get the multiplier drops and the only thing disabled is C1E and turbo. The gigabyte bios is much easier for inexperienced overclockers, the asus has sooooo many settings, I love it.


That's really interesting. I've also got a Crosshair V and within the next fews days I should be running an FX-8120 with it, so I'll pay attention to that and see if it happens with the ASUS board or not.
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!