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***official amd 83x0 overclocking thread***
- Thread starter farmerboy-86
- Start date
My 8350 was set at 1.375v out the box. I got it up to 4.5ghz on that voltage before it starting dropping cores in prime95.
i have a prime95 blend stable oc of 4.8ghz @1.5125v, 240x20.
ram-1920mhz (up the ram multiplyer if you have better ram. mine is 1866mhz)
nb and ht - 2400mhz
mine runs at 45deg c core and 64deg c socket after an hour of prime95 blend. my best cinebench 15 run is 760.
ive tried to get it up to 4.9ghz but it fails every voltage increase until 1.568 then after about 8m its starts dropping to 1.7ghz even tho neither temp has hit the upper limit. i tried the reduce multiplyer approach but it wouldnt post until a multiplyer of x17, kept saying failed overclock so i just went back to my original 240x20. I think i got lumbered with a crap chip but jackpot with my gtx770
i have a prime95 blend stable oc of 4.8ghz @1.5125v, 240x20.
ram-1920mhz (up the ram multiplyer if you have better ram. mine is 1866mhz)
nb and ht - 2400mhz
mine runs at 45deg c core and 64deg c socket after an hour of prime95 blend. my best cinebench 15 run is 760.
ive tried to get it up to 4.9ghz but it fails every voltage increase until 1.568 then after about 8m its starts dropping to 1.7ghz even tho neither temp has hit the upper limit. i tried the reduce multiplyer approach but it wouldnt post until a multiplyer of x17, kept saying failed overclock so i just went back to my original 240x20. I think i got lumbered with a crap chip but jackpot with my gtx770
75% is about the sweet spot.
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Thats ultra-high on asus boards?
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Disable cool n quiet and c1e
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- Joined
- 22 Feb 2014
- Posts
- 37
Following up with my little adventure disabling the HPET or enabling it completely including in Windows does nothing. I'm already set at 100 on the PCIE frequency so am pretty sure it's game related. Maybe if I didn't even have that little graph running I wouldn't notice it as much but now I know its there I just can't leave it alone!
This is a handy ASUS motherboard OC guide:
http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard
http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard
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Following up with my little adventure disabling the HPET or enabling it completely including in Windows does nothing. I'm already set at 100 on the PCIE frequency so am pretty sure it's game related. Maybe if I didn't even have that little graph running I wouldn't notice it as much but now I know its there I just can't leave it alone!
Thats so annoying
fingers crossed for the patch they've admitted to delaying naval strike for
Soldato
Nice info Damo!
Ok after following the asus guide i came accross a couple of things i hadnt done. i upped the voltages on the vdda, nb, and ram to the low end of their advised specs. I then enabled hpc and set cpu llc to ultra high, nb llc to high and cpu, cpu nb and dram currents to 130%.
I now have it running @4.83ghz - 1.5125v with a 300 x 16.0 multiplyer
I will just do a quick boot to bios to get the ram, nb and ht speeds and voltages and edit this post with the info. I didnt know how to build a pc last August ive come such a long way since then.
Ok here is my settings:
Ram-1999mhz @1.57v
NB - 2400mhz
Ht - 2400mhz
Cpu/nb - 1.25v
Cpu vdda - 2.55v
Nb - auto
Nb ht - 1.25v
Nb 1.8v - auto
Sb - auto
Then all the following are disabled:
Cool n quiet, C1E, SVM, Core C6 State and APM Master Mode.
Just HPC is enabled.
Im about to do a prolonged Prime95 blend test to see how it gets on. Id like to hit 5Ghz but it aint happening I dont think.
I now have it running @4.83ghz - 1.5125v with a 300 x 16.0 multiplyer
I will just do a quick boot to bios to get the ram, nb and ht speeds and voltages and edit this post with the info. I didnt know how to build a pc last August ive come such a long way since then.
Ok here is my settings:
Ram-1999mhz @1.57v
NB - 2400mhz
Ht - 2400mhz
Cpu/nb - 1.25v
Cpu vdda - 2.55v
Nb - auto
Nb ht - 1.25v
Nb 1.8v - auto
Sb - auto
Then all the following are disabled:
Cool n quiet, C1E, SVM, Core C6 State and APM Master Mode.
Just HPC is enabled.
Im about to do a prolonged Prime95 blend test to see how it gets on. Id like to hit 5Ghz but it aint happening I dont think.
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Soldato
If it fails the prime test dont worry, it is not useful for fx stability testing. Use aida64 or something similar for a few minutes to pick up any obvious errors and then game with it for prolonged testing or have it looping in a gaming benchmark.
I would put the RAM straight to 1.65v, since it doesn't get hot.
The FSB and multiplier seems to be a odd combination, i found the higher clocks to any of my Fx chips never required me to drop as low x16. If its stable, then i am not one to argue with progress! I will say that the very high fsb on a x16 multiplier is likely the reason for the need for such high core voltage. I understand that you might want to sue prime as people say its the most intensive but it is not and really just tests certain kind of calculations for the CPU, i have found some clocks to be stable in prime but not for gaming, so unless your aim is to find the nth prime number, would drop it for another form of testing. Testing in prime for gaming will limit your resultant clock as well, as it stands to reason that if some clocks are stable for gaming and not prime, some visa versa and some for both, then the highest stable clocks for gaming have the possibility that they will fail prime.
While you are FSB clocking, turn the RAM down to its original multiplier (one that has it at 1333 at 200 fsb). Then when you are done finding the CPU clock, youc an turn the multiplier up to the most stable setting or just the nearest one to its rated speed. Clocking the fsb up that high on RAM which is not rated for that speed will introduce memory errors if you are not constantly checking the memory stability. This will make the process longer as you wont know if it is a CPU issue or memory issue till you play with a variety of settings.
Obviously if you are WCing, heat is not an issue, as custom cooling is incredibly effective on these relatively flat IHS soldered chips. So if you want to bump the cpu/nb to 1.3 to see if it effects memory stability, it is an option when you run into memory troubles further down the line.
I would put the RAM straight to 1.65v, since it doesn't get hot.
The FSB and multiplier seems to be a odd combination, i found the higher clocks to any of my Fx chips never required me to drop as low x16. If its stable, then i am not one to argue with progress! I will say that the very high fsb on a x16 multiplier is likely the reason for the need for such high core voltage. I understand that you might want to sue prime as people say its the most intensive but it is not and really just tests certain kind of calculations for the CPU, i have found some clocks to be stable in prime but not for gaming, so unless your aim is to find the nth prime number, would drop it for another form of testing. Testing in prime for gaming will limit your resultant clock as well, as it stands to reason that if some clocks are stable for gaming and not prime, some visa versa and some for both, then the highest stable clocks for gaming have the possibility that they will fail prime.
While you are FSB clocking, turn the RAM down to its original multiplier (one that has it at 1333 at 200 fsb). Then when you are done finding the CPU clock, youc an turn the multiplier up to the most stable setting or just the nearest one to its rated speed. Clocking the fsb up that high on RAM which is not rated for that speed will introduce memory errors if you are not constantly checking the memory stability. This will make the process longer as you wont know if it is a CPU issue or memory issue till you play with a variety of settings.
Obviously if you are WCing, heat is not an issue, as custom cooling is incredibly effective on these relatively flat IHS soldered chips. So if you want to bump the cpu/nb to 1.3 to see if it effects memory stability, it is an option when you run into memory troubles further down the line.
Last edited:
Soldato
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If you've got 1.51v to get to 4.83Ghz, I don't think it'll be able to reach 5Ghz, sorry
I got tired and went to bed in the end. Thanks for the feedback avenged7fold I think I might revert back to my 240x20 4.8ghz. The ram was at 1920mhz. With the other little tweaks I've made according to the asus guide I'm going to run stability tests and if alls good I'll go back up to 4.9ghz and see if the little tweaks have helped with stability.
How do you rate the amd overdrive stability test as that's the one I normally use, but as everyone always says prime95 is the one to use I thought I'd try that. Immediately I notice in small fft test the temps skyrocket pretty quickly but using the blend test yields very similar temps to amd overdrive.
At the mo I have the cpu and gtx770 being cooled by 2 120mm rads but I'm planning on upgrading to a fractal midi r2 case and swapping the 120's for an 80mm thick 240mm rad and the 47mm thick ek xt240. Plus I plan on using a 150mm res instead of an 80mm.
At the moment playing bf4 on ultra with the cpu clock above and gpu boosting to 1358mhz I'm getting 38 deg c max on the gpu and 57 deg c socket and 49 deg c core temp using hwmonitor. I expect that to be much lower with the new case and rads as my current case has no cable management and there's not much room between components.
How do you rate the amd overdrive stability test as that's the one I normally use, but as everyone always says prime95 is the one to use I thought I'd try that. Immediately I notice in small fft test the temps skyrocket pretty quickly but using the blend test yields very similar temps to amd overdrive.
At the mo I have the cpu and gtx770 being cooled by 2 120mm rads but I'm planning on upgrading to a fractal midi r2 case and swapping the 120's for an 80mm thick 240mm rad and the 47mm thick ek xt240. Plus I plan on using a 150mm res instead of an 80mm.
At the moment playing bf4 on ultra with the cpu clock above and gpu boosting to 1358mhz I'm getting 38 deg c max on the gpu and 57 deg c socket and 49 deg c core temp using hwmonitor. I expect that to be much lower with the new case and rads as my current case has no cable management and there's not much room between components.
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For stability testing Ive been converted (on this thread actually) to use asus realbench. Seems to be more true to life as it were. Core#6 on my machine fails all the time doing p95, but pc passes with all cores working 100% on asus realbench without throwing an error or a wobbly of any sort.
Temps sound good for 4.8Ghz. My one doesnt like going above 4.82Ghz, need to go up from 1.42v to 1.49v to get to 5Ghz - would be nice to, and 4.9Ghz doesnt work at all... Until I sort out a full wc loop, 1.49v doesnt work for me - temps cause auto shutdown). Saving up the pennies now
Temps sound good for 4.8Ghz. My one doesnt like going above 4.82Ghz, need to go up from 1.42v to 1.49v to get to 5Ghz - would be nice to, and 4.9Ghz doesnt work at all... Until I sort out a full wc loop, 1.49v doesnt work for me - temps cause auto shutdown). Saving up the pennies now
Soldato
Normally i would agree with peeps saying you cant hit 5ghz but considering your voltages and fsb, it looks like your making life harder for yourself by pumping the fsb up as high as it goes while lowering multiplier for some sort of stability. If you want to up RAM, do it after the CPU clock via ram multipliers and timings.
In the watercooling department i can give you more specific advice/suggestions. At the moment your temps are good but you will be surprised how much stability you can gain by dropping from acceptable temps to very good temps on these fx chips, so i am sure you and your fx will appreciate the extra radiator when you add it. I would not go for the EK xt now there is a newer EK model out (EK PE). These are not as thick but sports a far higher FPI, better outer casing and has awesome cooling performance. Going thicker on radiators is not always better as since chamber design, fpi and materials used can all vary and affect performance just as much.
My first choice of radiators on a budget would be the EK Pe radiators, regardless of space you have available. My second choice would be the XSPC RX radiators or the Alphacool Monster ones if you can fit them.
I think the 80mm 240 I was looking at getting for the front is the alpha cool monster. Fitting the thinner pe radiator in the roof might work out better as I may then have room to add 1 of my 120mm rads in the rear.
Back on topic I think I'm going to wait until I get the new case and everything fitted then run it at 4.8ghz to get a comparison with the extra cooling then go from there. I'm trying to eek every little bit out of it for fsx as it's more cpu intensive than most games.
Considering I get 60fps ultra settings on bf4 and fsx is a 2006 game when flying low over airports and dense terrain or water I get 35fps maxed out. I'd love to know what could max it out in 2006 if anything!
Back on topic I think I'm going to wait until I get the new case and everything fitted then run it at 4.8ghz to get a comparison with the extra cooling then go from there. I'm trying to eek every little bit out of it for fsx as it's more cpu intensive than most games.
Considering I get 60fps ultra settings on bf4 and fsx is a 2006 game when flying low over airports and dense terrain or water I get 35fps maxed out. I'd love to know what could max it out in 2006 if anything!