I can get 4.5ghz on that voltage lol. What board are you running?
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FX 8350 temps
- Thread starter Minty649
- Start date
I can get 4.5ghz on that voltage lol. What board are you running?
Lol. But while gaming my temps are good ( 21c thermal margin on bf3).
It's a gigabyte 970a ud3p.
I guess I should adjust that then when I figure out how to overclock properly.
Regards.
I thought this was normal ? Some sites list an fx8320 as being around 1.41 at 3.7ghz and 1.42x at 4.0ghz (turbo mode).
Regards.
Same here, my FX-8350 runs 4.5Ghz @ 1.4125v with Very High LLC.
My fx8350 will do 4.5ghz at 1.40v and with custom watercooling in ibt it hits 55 socket and 41 on the cores from what I can remember. Max oc so far is ibt stable 4.8ghz @1.512v if I push it to 4.9ghz the 1.55v limit isn't enough and temps were close to 70 socket and 60 core which is the chips limit.
I just put my FX 8350 back to stock 4.0GHz, and running Prime95 small FFT I have temps as follows:
- 47C according to Coretemp
- 47C package temp on HW Monitor
- 57C CPU temp on HW Monitor, the one near the top of the screen
- AMD Overdrive thermal margin 23C
VID shows 1.325v in Coretemp, but under full load drops to 1.260v according to CPU-Z
I had been running this at 4.4GHz before for a couple of weeks, but I'm unsure of the best way to do it. It was freezing the machine in Prime95, but was passing IBT. All I did there was raise the multiplier, and set LLC to High. But under load, voltage was something like 1.368V, which was very high. The board seems to be over-volting anyway and then there is LLC as well. I'm not sure if I need to manually set the voltage to 1.325V and then set LLC, or not. Board is the ASUS Sabretooth fx990 r2.0. Guess I need to experiment. I do want the CPU to slow down and undervolt when idle, so cool n quiet etc must stay enabled.
- 47C according to Coretemp
- 47C package temp on HW Monitor
- 57C CPU temp on HW Monitor, the one near the top of the screen
- AMD Overdrive thermal margin 23C
VID shows 1.325v in Coretemp, but under full load drops to 1.260v according to CPU-Z
I had been running this at 4.4GHz before for a couple of weeks, but I'm unsure of the best way to do it. It was freezing the machine in Prime95, but was passing IBT. All I did there was raise the multiplier, and set LLC to High. But under load, voltage was something like 1.368V, which was very high. The board seems to be over-volting anyway and then there is LLC as well. I'm not sure if I need to manually set the voltage to 1.325V and then set LLC, or not. Board is the ASUS Sabretooth fx990 r2.0. Guess I need to experiment. I do want the CPU to slow down and undervolt when idle, so cool n quiet etc must stay enabled.
Soldato
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I have the same board. Manually set your values in the BIOS.
Thanks - just did that, but it then prevents the CPU from dropping the voltage at idle. The frequency drops, but the voltage doesn't.
I might have to live with that. I've set 1.325v manually, and LLC at ultra high now. Voltage under load shows as 1.344. I don't understand why that is higher than 1.325, but oh well.... Temps previously 47C under Prime, now 67C under Prime !!!! And now the machine has frozen. Under normal conditions these temps would never be hit, but I'm beginning to think now that overclocking these just isn't worth the trouble.
EDIT:
A simple bump to 4.2 looks like the best compromise. Voltage under load still 1,260v, temps just slightly higher at 51C,and so far Prime95 is stable for 30 mins, no lockups. All other settings stock. I'm confident this is rock solid.
EDIT:
A simple bump to 4.2 looks like the best compromise. Voltage under load still 1,260v, temps just slightly higher at 51C,and so far Prime95 is stable for 30 mins, no lockups. All other settings stock. I'm confident this is rock solid.
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Same board and CPU. it looks to me that you need to turn your CPU volts up, i get the same freezing in IBT and BF4 if i don't run high enough Core volts.
Don't be frightened of Volts, these things are built like Tanks, AMD say 1.55v is perfectly safe, i know someone who has been running his at 5.1Ghz 1.60v since new, about a year.
As long as the temperatures are <70c its fine.
As for Prime95, these CPU's simply don't like it, i find AOD most suitable for stress testing these CPU's.
I run 4.6Ghz
Overclocking: Manual
Turbo Core: off
Multi: 22.5x
HT Bus: 204Mhz
CPU-NB Manual: 2200Mhz
HT-Link Manual: 2400Mhz
Ultra high LLC
Core volts: 1.4375v
NB Volts: 1.18v
Everything else on Auto or untouched
Green stuff in CPU Settings.
C&Q: Disabled (Fully, not just by CPU)
CE1: Disabled
C6: Disabled
APM: Disabled
HPC: Disabled
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Thanks for the tips, that is incredibly helpful.
Prime95 runs fine at stock, but I guess it isn't the best for overclocking testing becuase of the high temps it generates. AOD stability test looks very comprehensive, I'll give that a try. I suspect you are right, it is just a matter of more vcore, but then temps become an issue. Maybe with AOD and not Prime95 that won't be such an issue.
Prime95 runs fine at stock, but I guess it isn't the best for overclocking testing becuase of the high temps it generates. AOD stability test looks very comprehensive, I'll give that a try. I suspect you are right, it is just a matter of more vcore, but then temps become an issue. Maybe with AOD and not Prime95 that won't be such an issue.
Prime95 IMO is not much use for stability testing on modern CPU's with modern extensions, Like AVX ecte... all it does is set a number crunching task and make the CPU do that at an intensity way beyond what it normally would.
So rather than testing how stable the CPU is in its many many different tasks, it simply serves to drive up temperatures to unnaturally high levels.
As for temperatures, in stress testing if its 70c at most its fine, anything over that is too high even if you don't hit those temps during normal Desktop operations.
70c is the maximum long term tolerance, so its a target for maximum tress. if you go a little over that before cancelling tress testing don't worry, it wont hurt the CPU unless its silly temps...
So rather than testing how stable the CPU is in its many many different tasks, it simply serves to drive up temperatures to unnaturally high levels.
As for temperatures, in stress testing if its 70c at most its fine, anything over that is too high even if you don't hit those temps during normal Desktop operations.
70c is the maximum long term tolerance, so its a target for maximum tress. if you go a little over that before cancelling tress testing don't worry, it wont hurt the CPU unless its silly temps...
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I tried for a while to avoid manually setting the voltage, becuase the voltage then doesn't drop on idle. But I had to give up on that, you can't get fine enough control on the voltage.
So, setting manually, I pretty much immediately found a nice sweetspot:
Bus 204
Multi 21.5
= 4.4 GHz
NB 2244
HT 2652
CPU/NB Volts 1.20
NB Volts 1.15
CPU Volts 1.3875
LLC Medium
Volts under load AOD - 1.344
Max temp reached 62C
Passed 1 hour AOD run.
This seems a very nice sweetspot. Modest volts, temps still pretty low, and a decent 10% overclock.
So, setting manually, I pretty much immediately found a nice sweetspot:
Bus 204
Multi 21.5
= 4.4 GHz
NB 2244
HT 2652
CPU/NB Volts 1.20
NB Volts 1.15
CPU Volts 1.3875
LLC Medium
Volts under load AOD - 1.344
Max temp reached 62C
Passed 1 hour AOD run.
This seems a very nice sweetspot. Modest volts, temps still pretty low, and a decent 10% overclock.
The reason why the voltage was higher than you set is because LLC was on so high. LLC is for offsetting Vdroop and ultra high always over-compensates. Medium or high is always worth it.
However, after what I said above, you can use LLC to your advantage as it only applies it under load. So you can run at a lower voltage most of the time, have LLC set to ultra-high and just make sure that the voltage when running stressed is what you need
You can definitely push that chip further if you're only at 1.39V odd - they run easily up to 1.5v if you can cool it!
Soldato
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Agreed with the above. One thing though I will vouch for is the extra 200mhz on these chips isnt worth the extra heat. Benching is one thing but for stability and overall performance it isnt worth pushing.
I found 4.6Ghz to be ample grunt for the everyday application/game. Dropping the overclock slightly and getting much cooler temps are the ultimate combination at least until its winter and you need the FX to help heat the home!
I found 4.6Ghz to be ample grunt for the everyday application/game. Dropping the overclock slightly and getting much cooler temps are the ultimate combination at least until its winter and you need the FX to help heat the home!
The settings for the overclock look good, Temps are also not bad at all.
There is more in it should you want it. but for now i suggest running it like that for a while, see how happy you are with it.