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6350 OC

I would also check you're on the latest bios because your board may not have the PD update. My CHV didn't it was still on a BD bios.
 
Th3M8dH8tt3r said:
I have a 6350 at 5Ghz and if the temps get up to 70ish, it crashes. It's only one game that causes that kind of temp rise, passes stress tests with lower temps. Computer never blue screens, just freezes and requires a push on the restart button.

At 1.5v, I'd expect you to be at 5Ghz but with stability issues. 1.525v was 5Ghz stable for me.

I had an 8150 at 4.8Ghz previously.
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Mine does not crash in the 70's, only crashes when i try 4.7 or more, of which wants more than 1.51v.

4.6 at 1.51v is the best i can get, but prefer 4.5 at 1.47.

Clearly you won the silicon lottery, i got the worse possible scenario.
 
random_matt said:
Mine does not crash in the 70's, only crashes when i try 4.7 or more, of which wants more than 1.51v.

4.6 at 1.51v is the best i can get, but prefer 4.5 at 1.47.

Clearly you won the silicon lottery, i got the worse possible scenario.
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The fact you already run at 70 makes it hard to get it stable. get it cooler and you can make 4.7 without raising voltage.
 
I would agree temps are your enemy here. Even with an H100 you should see a vast improvement. Unless of course you have a bad mount, in which case remount with new tim and give it another go.
 
random_matt said:
If it was a heat issue, then how does pumping more voltage equal stability?
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Because you're shoving it full of volts. Heat causes terrible instability in AMD CPUs and always has. Put it this way, with my old Phenom 2 940 it didn't matter how much voltage I shoved through it or how high I clocked it. Once it hit 46c? game over. In the end I managed to get it to 3.9ghz on a NHD-14 at crazy low volts. As long as I kept the temp under 46c it would be Prime stable. As soon as it hit 47? the computer would make a loud buzz through the speakers and either lock up or just shut down.

I can push my 8320 into the low 70s. Which is pretty good considering my old board would throttle (not the CPU the board) at 67c.

I'm going to have a right job on my hands getting the 4.2ghz I had on it stable when I get it back.
 
random_matt said:
If it was a heat issue, then how does pumping more voltage equal stability?
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Lower the temps by upgrading the cooler and it will be more stable at the same settings. You can then raise the clock moderately without touching volts, due to the new found stability from lower temps. If you want to clock it even more, you can apply more voltage until it is in the upper range of recommended fx temps which are roughly 60. As long as the temps stay low, a bit more voltage wont hurt, you just have to be patient and cautious.
 
So if i were to get a top notch cooler, then i should be able to achieve 4.8GHz at my current 1.47v of which seems high for 4.5GHz.

What do you recommend? i have a HE01, but the mounting bar broke.
Would a megahalems be good, always liked that cooler.
 
Cant guarantee it, because i don't know much about what settings you have tried, but it does seem that temps are whats holding your clock back. Have you tried tweaking the clock without the side panel of the case?

This is free to try and will let you off a couple of degrees at the very least.

is 1.47V the voltage you set it at or the voltage after it has dropped under load?

I haven't used air coolers in years, so i am afraid i am out of the loop if it isn't custom water or AIO.
 
random_matt said:
So if i were to get a top notch cooler, then i should be able to achieve 4.8GHz at my current 1.47v of which seems high for 4.5GHz.

What do you recommend? i have a HE01, but the mounting bar broke.
Would a megahalems be good, always liked that cooler.
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I don't know would be the answer. I do know that anything above 1.47v on my rig with a H100 results in temps that are worryingly close to the limit. So I down clocked a bit and settled with either 4.85 ghz @ 1.47v for when I really fancy giving things a shove, or, 1.44v or lower @ 4.7ghz.

Whether a cooler would enable you to get higher?

Look man, let's be real here. You need luck of the draw for 5ghz on any AMD CPU. Me personally? 4.5ghz and beyond will net you very little difference in the real world. Chasing a set MHZ will cost you, and likely make it end up costing more than it is worth.

I know it sucks but I would just get it stable at around 4.5ghz and then just be happy with it. The chances are that once I'm done playing with my overclocks I'll just settle for 4.5ghz with as low volts as I can. One of my boards will only do 4.2ghz at the absolute most and getting it there is an absolute nightmare (one wrong setting and it just won't post).
 
I agree with Andys attitude towards the small real world difference between 4.5 and 5GHz, though i think it is possible to achieve 5GHz on almost any 6 core or 8 core fx chip with a 24/7 cooling solution, however upper ends of 24/7 cooling solutions are costly, such as high end custom cooling which is minimum £250 for a decent CPU only loop brand new.

At the moment i run three fx systems. One is an 8150 (absolutely golden chip, so i kept it!) Other two are fairly average 8350 and 8320. All have hit 5GHz prime stable on water. The 8150 can actually be under-volted and overclocked a bit! I can even let it boot and pass some benchmarks at 5.3GHz, HOWEVER many of these benches are lower scoring than if i were to bench the exact same chip at 5 or 4.9, simply because it is less stable. Reason for this is, at 5.3 i needed a voltage which started to make temps unstable.

A varied overclock with higher HT and memory will benefit you more than just a multiplier clock in my experiences.

Reason why i ask for voltage under load, is that CPUs tend to drop in voltage under load. Boards usually compensate by adjusting the voltage to match what you set it to, but few boards do this perfectly and you might need to adjust this yourself. It will increase heat though, because your original input voltage is still going somewhere. So what you might be faced with is under load your voltage is much less than you think, making it hard to get stable, however the CPU temps are also limiting the clock. So if you check in CPU-Z during something like a prime95 torture test, you can see if it matches the setting you put in the bios. Dont need to wait for the CPU to heat up or anything, as soon as it is under full load, you should see a change in voltage, if it is a lot lower than you think, it might be one of your problems.
 
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Avenged7Fold said:
I agree with Andys attitude towards the small real world difference between 4.5 and 5GHz, though i think it is possible to achieve 5GHz on almost any 6 core or 8 core fx chip with a 24/7 cooling solution, however upper ends of 24/7 cooling solutions are costly, such as high end custom cooling which is minimum £250 for a decent CPU only loop brand new.

At the moment i run three fx systems. One is an 8150 (absolutely golden chip, so i kept it!) Other two are fairly average 8350 and 8320. All have hit 5GHz prime stable on water. The 8150 can actually be under-volted and overclocked a bit! I can even let it boot and pass some benchmarks at 5.3GHz, HOWEVER many of these benches are lower scoring than if i were to bench the exact same chip at 5 or 4.9, simply because it is less stable. Reason for this is, at 5.3 i needed a voltage which started to make temps unstable.

A varied overclock with higher HT and memory will benefit you more than just a multiplier clock in my experiences.
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Yeah at one point yesterday I was thinking "Hmm, I wonder how much a proper water loop would cost" and then I had to touch down back on earth again and realised I wanted to build my lady a rig.

I guess it depends on what you are aiming for. If it's some sort of personal goal then common sense will always go out the window.

I'm definitely with you on the HT and memory clock though. No matter how high I got my CPU Cinebench stable I was unable to break 800 points which must be down to my ram running at a pretty lame speed.. But again, it was a matter of being happy with what I'd achieved and not dumping £80 or so into ram just for a few points.
 
ALXAndy said:
But again, it was a matter of being happy with what I'd achieved and not dumping £80 or so into ram just for a few points.
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Funny you should mention that, i was just thinking of doing the same with my RAM. I have pretty standard 1600 Ballistix RAM with tight-ish timings. I found ram stability limiting my clock once and had to knock ram down a multiplier, up its voltage to 1.65V to increase my CPU fsb. When i adjusted the RAM settings, my new CPU OC was stable (without having to touch cpu settings). Since then i have been considering spending the premium for ease of clocking and for slight better bench results. I doubt ill be doing it though, as i have them watercooled and the effort of patiently removing the heatsinks on the new RAM, without ripping out the modules, has put me off. Even if i didnt watercool i would still use these EK ram sinks, they just look so awesome and the finish is stunning (literately no picture in the internet seems to capture their cyclical aluminium brush finish enough to do them justice).
 
Avenged7Fold said:
Funny you should mention that, i was just thinking of doing the same with my RAM. I have pretty standard 1600 Ballistix RAM with tight-ish timings. I found ram stability limiting my clock once and had to knock ram down a multiplier, up its voltage to 1.65V to increase my CPU fsb. When i adjusted the RAM settings, my new CPU OC was stable (without having to touch cpu settings). Since then i have been considering spending the premium for ease of clocking and for slight better bench results. I doubt ill be doing it though, as i have them watercooled and the effort of patiently removing the heatsinks on the new RAM, without ripping out the modules, has put me off. Even if i didnt watercool i would still use these EK ram sinks, they just look so awesome and the finish is stunning (literately no picture in the internet seems to capture their cyclical aluminium brush finish enough to do them justice).
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I may be getting some ram that will do 2ghz for a fair price. If so I'll keep that and pass my 1600mhz Mushkin onto my lady :)

Maybe if I get the ram I can break 800 points but it's not bothering me that much. I just started my second Metro Last Light playthrough as I loved the first one (I'm hoping for the alternate ending) so I don't want to go mad and risk losing my OS and save games :D

Edit. BTW Matt I was reading a review of the 6300 and 8350 today on Pcper and he only got around 4.4/5 ghz out of his 6300.

http://www.pcper.com/reviews/Proces...view-Vishera-Breaks-Cover/Power-Overclocking-

Which isn't that great. What I do know is that you need a high end AIO for 5ghz. Even the H60 throttles the 8320 @ 4.2ghz :O

The H100 works well due to being dual rad but also because it has a large contact plate. The FX CPUs have cores in each corner (literally dual core CPU modules) so the heat is everywhere. Air coolers don't do well on AMD unless they have a large contact plate, and most of them were designed for Intel CPUs so have tiny little plates to sit on 1366 and above.

TBH from the sound of that review there? 4.6 is a good frequency on a modest cooler :)
 
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