AMD FX 6100 Overclocking Advice

Infexious

Honorable
May 11, 2013
1
0
10,510
Hi!
I'm new to overclocking and was wondering if anyone could give me some advice. I'm looking to OC to gain some more gaming performance. My temps have always seemed pretty high, I'm currently running at 40°C while writing this with nothing else open, and it can get up to around 80 when gaming. I've done some searching online and managed to OC my cpu from 3.3Ghz to 4.0Ghz and (I think) it was stable. I then tried following a couple different guides to take it a step further but my computer wouldn't start up and I had to take the mobo battery out and decided to ask on a forum for some help. I'm happy with 4.0Ghz but I would like to go a little further and OC NorthBridge Frequency, CPU Host Clock Control/CPU Frequency, possibly Memory Clock but I'm not sure how much that will effect gaming performance, HT Link automatically OCs with CPU Frequency and I'm not sure where to put that. Heres a picture of my BIOS settings at default: http://s23.postimg.org/flcelw2a3/2013_05_11_15_08_26_1.jpg

Normal CPU Vcore = 1.4125v

Heres a picture of what I've tried to set my BIOS to but then PC fails to boot:
http://s15.postimg.org/6oo7wl097/2013_05_11_15_10_31_1.jpg

As soon as I OC CPU Frequency from 200Mhz to 250Mhz, the PC fails to boot. I've tried leaving everything else on Auto other than changing CPU Clock Ratio and NorthBridge Frequency to 4000Mhz and 2500Mhz with and without voltage increases, I've tried setting HT Link and Memory Clock as close to default as possible with and without voltage increases, and I've tried PCIE Clock at Auto or 100MHz.

Can anybody tell me what settings I should be using, or what I am doing wrong? Call me an idiot if I'm doing something stupid, no hard feelings.

My system specs are:
Windows 7 64-bit
Gigabyte GA-78LMT-S2P Motherboard
AMD FX 6100 3.3GHz Six Core Processor
Sapphire HD 6870 1GB Graphics Card
2x2GB RAM sticks at 1333Mhz
880W PSU
Standard cooling: 3 case fans + stock CPU and GPU fans

Also, should I be using the BIOS setting "1 Core Per Compute Unit" for more gaming performance, or leaving that at default?

Thank you for reading my first post, and thanks in advance for any help/advice!
 


With your system clock at 250MHz, this should be HT Link & IMC/NB at 8X or 1600MHz, and your memory at 5.33. There is no benefit to over-clocking the HT Link & IMC/NB on a Piledriver.

You should also verify that any Turbo or core boost function is disabled. I run Cool & Quiet (C&Q), but most folks disable it, too.

IMPORTANT!: I also highly suspect your Gigabyte GA-78LMT-S2P may be driving your high temps by over-volting your CPU. Take manual control and reduce your VCore -0.025v (and -0.0125v steps after that).

I think you can do 16X CPU at 250MHz with good air, and maybe even get to 16.5X if you can keep your temps down. 'Finger-test' your FETs and NB heat sink.

If you pull back a smoking nub, you might want to point a fan at 'em.

The GB 7xx-chipsets are bad to over-volt, and your stock CPU cooling is holding you back, too.

You may chart your voltage and temps during the OCCT stability test. Less Volts = Lower Temps

 

dbaaz

Honorable
Mar 3, 2013
47
0
10,530
Hey,

I am also using the Gigabyte GA-78LMT-S2PT with the FX 6100 on 4.2GHz and these are my settings.

http://i.imgbox.com/adevNArG.jpg
http://i.imgbox.com/acdUIpLZ.jpg
PS: Save and rotate the 2nd image, dunno why it is rotating while uploading

For some reason, after disabling all the power saving settings, simply unlocking the System Bus (not overclocking mind you) will skyrocket the CPU temps to a 100C and the system shuts down. Dunno if its the same case with you, but I'll advise you dont try it. Also turn off Thermal Control in PC Health if you dont want to be thermally throttled, but I wont advise it because you are reaching very high temps.

Also, the stock cooler is junk. Got to a 80C on 3.8GHz on it. Where I live, the ambient temps are pretty high. So bought a Hyper TX3 Evo and now I can push 4.2GHz at max 76C at load, while its still pretty high I dont plan to push this cheapo for more than a year.

And the "1 core per compute unit" does nada, I think it is supposed to work with the 8 core variants. With the 6100, even after enabling that you will see 6 cores in Task Manager.
 

lamerstein

Honorable
Aug 19, 2013
7
0
10,520
The "1 core per compute unit" works fine for me, enabling it turns the FX-6100 into 3 core. All programs report it as such.

You may have some problem with your mobo / bios ?

I'm on fairy old/cheap asrock with nForce 720D chipset, but it works fine.