AMD 8350fx overclocking. What is holding back my overclock.

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Kirk557

Commendable
Jun 24, 2016
2
0
1,510
Hello all. This is my first time posting here. I hope I am posting in the right area. But here is my question. I have an Amd 8350fx CPU. But I cant seem to get the the CPU past a 4.4ghz overclock. Temps seem to be fine. it idles at 18c and under a full load while rendering with Lightwave it sits between 46-49c. If I try to set the CPU at a multiplier of 22.5 to make it 4.5ghz it becomes super unstable and crashes immediately. I am not at my PC right now but I know my vcore is quite high for what 4.4ghz. I believe its set at 1.46.

So my question is my cooling insufficient? is my motherboard holding me back? Or do I know have enough power from my power supply? Or am i just bad at overclocking?

Would it be worth while to try to upgrade to a 990fx motherboard or a gold rated power supply?

Specs:
CPU: Amd 8350fx - (currently 4.4ghz oc)
MOBO: MSI Gaming 970 Gaming AM3+
GPU: Nvidia Gtx 970 Ftw+ 4gb
RAM: 2x(g.skill 8gbs) 2x(g.skill 4gbs) total 24gbs of ddr3 1600
SSD: Muskin 256gb
HDD: WD Blue 1tb
PSU: Thermaltake SMART Series SP-750PCBUS
Cooling: Corsair H80i v2 (with push pull setup)
and 2 front fans on the case.

Any help would be greatly appreciated. I use the pc mainly for 3d rendering and the occasional game.
 
Solution
jaytechgaming
It could just be the CPU not the motherboard. A new PSU isn't going to add much, so don't worry about that. You could try a 990 motherboard with better VRMs. However, that's not going to mean you are going to get a great overclock. The difference between 4.4 ghz and a theoretical 4.6-4.8 ghz OC is not worth the money for a new board tbh.
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K

Kirk557

Commendable
Jun 24, 2016
2
0
1,510
Would the ASUS M5A99FX PRO R2.0 be worth a l0ok at or would the add features of the ASUS ROG Crosshair V Formula-Z be more worth my while of upgrading. Or the ASUS SABERTOOTH 990FX R2.0 because of its claimed better cooling and is the in the middle of the other 2 for features and price. I would like to get as high as a stable overclock as possible as I use the PC as my render machine. I send the file I want rendered to it and continue working on my other PC.
 
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jaytechgaming

jaytechgaming

Honorable
Feb 3, 2013
556
0
11,160
It could just be the CPU not the motherboard. A new PSU isn't going to add much, so don't worry about that. You could try a 990 motherboard with better VRMs. However, that's not going to mean you are going to get a great overclock. The difference between 4.4 ghz and a theoretical 4.6-4.8 ghz OC is not worth the money for a new board tbh.
 
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Solution
Tradesman1

Tradesman1

Legenda in Aeternum
Jun 5, 2013
67,883
40
126,960
M5A99FX PRO R2.0 is a good choice, the Crosshair is another - depends on your budget and needs - I've got the Crosshair and in large part got it for testing DRAM, GPUs and other components for helping people here on the forums, it's more thatn most 'need' as far as cost goes.
 
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J

Justin_100

Commendable
Jul 22, 2016
2
0
1,510
I found Vdroop is the biggest problem. I have a FX 8300 overclocked to 4.3 GHz stable. LLC is key. Set it to high or extreme. I also had to add a fan to the back of the Motherboard to keep the socket temps down.

After moving my LLC to very high I was able to drop my Vcore significantly
 
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W

williswonka

Commendable
Nov 27, 2016
2
0
1,510


 
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W

williswonka

Commendable
Nov 27, 2016
2
0
1,510
I have a fx 8350 @ 4.7 M5A99FX pro r2.0 you must change some setting in your bios to get anything above 4.4. It really isnt much difference from 4.4 to 4.8 really not worth upgrading mobo.
 
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