Fx8350 overclock

[Shoff29]

I'm currently running an FX 8350 with 2 r9 290x. I use an H100i to cool the cpu to my temps are not an issue. I'm just unaware of what limit I should keep my voltage to when over clocking, and if there should be a max frequency I shouldn't pass. 

[vorticalbox]

3 minutes ago, Shoff29 said:

I'm currently running an FX 8350 with 2 r9 290x. I use an H100i to cool the cpu to my temps are not an issue. I'm just unaware of what limit I should keep my voltage to when over clocking, and if there should be a max frequency I shouldn't pass. 

~1.5 I have mine at 1.4 for a 4.5 GHZ oc and my VRMs easily hit 100c and over when under constant load like video encoding. As for max frequency well that depends on your chip and in my case the VRMs

[Guest]

depends on motherboard. 

 

You can justify ~1.5v on some. 

[vorticalbox]

5 minutes ago, Strike105X said:

Use a fan on your VRMs... Mine don't go over 51c in regular usage and 69c for heavy usage.

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@Shoff29 what's your motherboard, we first need to know that before overclocking.

No no that would ruin the look of my rig

[vorticalbox]

16 minutes ago, Strike105X said:

Considering that the max rated operating temperature for vrm's is  usually between 90c-110c depending on their quality your pushing it, just a warning, as I'm not meddling in what you want to prioritize, lifespan or aesthetics :p.

well I don't run an overclock anymore and I am running Linux so I have no idea what my vrms are running it. It is currently under volted to 1.3v with 4.0 base and 4.1 boost. I have a gigabyte ud3 990fx , not sure what the operating temp is but they have a beefy heat sink and it was running fine. I hardly push my computer unless encoding videos for use on my nas.

[i_build_nanosuits]

1 hour ago, Shoff29 said:

I'm currently running an FX 8350 with 2 r9 290x.

ohhh god!

[Shoff29]

3 hours ago, Strike105X said:

Use a fan on your VRMs... Mine don't go over 51c in regular usage and 69c for heavy usage.

---------------------

@Shoff29 what's your motherboard, we first need to know that before overclocking.

It's a GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX + SB950 SATA 6Gb/s USB 3.0 ATX AMD Motherboard

 

Purchased in 2012, if that matters. 

[Shoff29]

23 minutes ago, Strike105X said:

 

With frequencies the sky is the limit, with voltage up to 1.55v max, but there's another thing to take into consideration, temperatures, for your CPU its 62c, when starting the overclock don't go for max voltage keep gradual, start from a low value work your way up, also that's a very solid mobo like i talked with vorticalbox,but if you push it far it might not hurt to put a fan on the VRM heatsink, here is a nice tutorial to get you started: http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard

 

Also what is your PSU ?

Running a program like Prime 95, my temps seem to top out around 45 C. running at 4.5 Ghz at 1.440 V. GPU's hover around 63 C when gaming My psu is a ax1200i by Corsair.

[Shoff29]

4 hours ago, Strike105X said:

What are you using to monitor temps ?

msi, hw monitor, amd wattman

[SpaceGhostC2C]

7 hours ago, Shoff29 said:

It's a GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX + SB950 SATA 6Gb/s USB 3.0 ATX AMD Motherboard

 

Purchased in 2012, if that matters. 

It's not bad, although the date would make it the rev 1, I believe. In which case I'd rather avoid 1.5v and higher to be on the safe side, as they improved VRM cooling in later revisions. Keep an eye on socket temps (CPU temp reported by the motherboard) and compare them to package temps after load: if socket is too hot and is way above package, you could have a VRM heat issue (as said above, you can improve it with a fan on the VRM heatsink).

 

Other than that, keep the voltage as low as you can while still being stable in stress test, and good luck!

[Shoff29]

On ‎12‎/‎20‎/‎2016 at 10:27 PM, Strike105X said:

Can you post a screen of hwmonitor under prime95 small fft test at about 15 min in?

 

Also try AMD overdrive as well, that program shows thermal margins not actual temps. It shows how much more you have till you can reach the maximum operating temperature. Its just a safety precaution to confirm hwmonitor temps. You should be fine with those two. The reason I ask for a screen of hwmonitor is because I want to check thevother temps.

 

[-rascal-]

Temperature-wise for the CPU, that seems okay.

But if I recall correctly for Gigabyte AMD motherboards, TMPIN2 is for the motherboard chipset. 58*C is okay, but is getting on the warm side.

 

Your Core Voltage swing is HUUGE, though.

1.456V drooping down to 1.328V when the CPU is at 100% ?!

See if your motherboard has any settings listed as 'Load Line Calibration.'

 

Also, in your BIOS:

• Enable HPC (High Performance Computing)
• Disabled APM (Application Power Management)
• Disable Cool N' Quiet  -- you can turn it back on later if you wish
• Disable C1E -- you can turn it back on later if you wish

Depending on how lucky you get, most FX-8350's reach a limit at the 4.6 GHz ~ 4.8 GHz range.

A few can do 4.9 GHz, 5.0 GHz or more, but will require a significant amount of voltage.

For an example, my FX-8350 can do 4.8 GHz with 1.4V.

It requires 1.45V for 4.9 GHz.

Needs about 1.5V for 5.0 GHz.

The voltage-to-frequency scales pretty horribly when you get close to the CPU's limit.

[Shoff29]

On 12/20/2016 at 0:06 PM, i_build_nanosuits said:

ohhh god!

Haha, temps have yet to be an issue. ?