***official amd 83x0 overclocking thread***

[ALXAndy]

Looking good cwgk.

I've currently got my 8320 stable at 4.6Ghz with a v-core of 1.4v but im struggling to get 4.7 stable at all.

I'm using a combination of multi and fsb but I might try lowering the multi back down to 18.5 and just try increasing the fsb after reading the above.
Do you think its worth a shot?

I also cant set manual memory timings at all, I have to leave it all on auto or the system wont post. I'm using a sabertooth

Yeah give it a go. What board do you use? - bugger me I'm blind..

Don't touch the memory voltage on an Asus. It will kill your overclock. Leave it auto, load optimised settings, then get to work.

 

[famas]

cool, I'll have another go at the weekend and see how things go.

cheers.

 

[cwgk91]

Looking good cwgk.

I've currently got my 8320 stable at 4.6Ghz with a v-core of 1.4v but im struggling to get 4.7 stable at all.

I'm using a combination of multi and fsb but I might try lowering the multi back down to 18.5 and just try increasing the fsb after reading the above.
Do you think its worth a shot?

I also cant set manual memory timings at all, I have to leave it all on auto or the system wont post. I'm using a sabertooth

Interestingly mine was ok at stock voltage up to 4.5Ghz but then to get past that at all I needed to go to 1.45V. Dont know if its just a quirk of my chip but there seemed to be a sort of threshold to get past before doing anything more

I also had to go up to 1.6V ram voltage for my memory to work at all at anything higher than 1600Mhz, even though its XMP profile is at 1.5V...

 

[famas]

right just had a quick play and managed to get 4.7Ghz with 1.41v fairly stable.

I tried getting 4.6Ghz using the FSB only but it threw a right wobbler, locked up the system and I couldn't even get back into the bios.

Luckily after a few tries I managed to get into the bios via one of the motherboard hot keys.

Going to do a few more tests but it passed asus realbench 2 and that normally means its stable enough for my uses.

 

[ALXAndy]

Realbench 2 is literal torture for a CPU. It really is hard to get through. I managed to play with my CPU at 5ghz for hours on end once and only decided to back off the clocks due to heat. Thing is, Realbench soon had my rig locking up.

Best I could manage was 4.9ghz and my temps literally sat at 72c. One more and my rig locks, so I was right on the limit.

Fun though

 

[cwgk91]

Going to do a few more tests but it passed asus realbench 2 and that normally means its stable enough for my uses.

How long do you run it for in Realbench? Just a benchmark or torture test it for a couple of hours?

 

[famas]

I normally run the benchmark first and if it passes that do 15-30 minutes on the torture test. If the system is unstable it normally crashes after the first few minutes.

I normally do 5 runs in linx first though as its quick, if it fails any of the 5 runs in linx it wont pass realbench.

You can test for much longer if you like just keep an eye on the temps.
I've done half an hour in the torture test and i'm happy its stable for my needs.

What temps are you getting at 4.9 Andy?

I Seem to be maxing out at 50c on the torture test at 4.7Ghz and idling around 32c.

Whats a safe temp for 24-7 use?

I could probably get this chip to 4.8- 4.9 possibly even 5.0Ghz but I dont want to run it hot all the time.

 

[Armadillo]

If I'm intending to overclock anyway, is the 8350 worth the extra over 8320? Any more likely to get better speeds out of it, or still just a lottery and save the £30 and go with the 20?

 

[gpuerrilla]

If I'm intending to overclock anyway, is the 8350 worth the extra over 8320? Any more likely to get better speeds out of it, or still just a lottery and save the £30 and go with the 20?

Go with the 8320. IMO not worth the £30 extra and put that into a better motherboard.

 

[Armadillo]

Go with the 8320. IMO not worth the £30 extra and put that into a better motherboard.

Just a cpu upgrade . Already running a sabertooth 990fx (just need to upgrade it's bios before changing).

I'll just go with the 8320 then.

 

[ALXAndy]

I normally run the benchmark first and if it passes that do 15-30 minutes on the torture test. If the system is unstable it normally crashes after the first few minutes.

I normally do 5 runs in linx first though as its quick, if it fails any of the 5 runs in linx it wont pass realbench.

You can test for much longer if you like just keep an eye on the temps.
I've done half an hour in the torture test and i'm happy its stable for my needs.

What temps are you getting at 4.9 Andy?

I Seem to be maxing out at 50c on the torture test at 4.7Ghz and idling around 32c.

Whats a safe temp for 24-7 use?

I could probably get this chip to 4.8- 4.9 possibly even 5.0Ghz but I dont want to run it hot all the time.

I'm hitting 72c in Realbench. 73c locks the rig, so I'm literally flying by the seat of my pants.

As for what temps are safe? don't worry about it. Whatever temps keep the rig working, basically. Your board and CPU have safety mechanisms built in but you'll probably lock up your rig when you've gone too far. Some say 62c, others say 68c. From my findings? whatever temps lock the rig lol.

Temps won't damage the CPU IMO only too much voltage will do that. It was very similar with my Phenom 2 940. I could get 3.9ghz out of that on my Noctua NH-D14. As soon as the CPU hit 44c that was your lot, hard lock. It was the only thing keeping me from 4ghz and beyond.

The CPU itself is soldered and well put together. Intel CPUs with the same size dies can do 90c or so before crapping out so as I said, I really wouldn't worry about it. Physically the AMD chips can take the heat. And like I say, as soon as you upset them they'll let you know by locking up.

 

[famas]

excellent, cheers for the reply.

Might push this a little further then

 

[ALXAndy]

excellent, cheers for the reply.

Might push this a little further then

Have some fun with it man. I can get 5ghz but not through Realbench. The only thing that stops me running my rig at 4.9 or 5ghz is the heat that the board produces. That's why I fitted the floating fan as it worked wonders with my VRMs.

Day to day I just use 4.7ghz. More than enough tbh. What with that, my Revodrive and god knows what else it makes for a bloody fast rig.

I'm only building the Intel one to save power. Then that kinda got flipped on its head when a friend of mine offered me a GTX 480 Lightning. It uses two 8 pin and a 6 pin lmao.

I couldn't resist though. It's just a legend of a GPU.

 

[evohicks]

Guys I am thinking of doing an overclock to store in my bios for future stuff, can anyone give me a few settings to change as a basic overclock to start with?
Not looking for anything massive but maybe 4.6 - 4.7 as a starter.
PC spec in sig, thanks.

 

[alex_123_fra]

Guys I am thinking of doing an overclock to store in my bios for future stuff, can anyone give me a few settings to change as a basic overclock to start with?
Not looking for anything massive but maybe 4.6 - 4.7 as a starter.
PC spec in sig, thanks.

My 24/7 clock is BCLK at 240 and multiplier at x20 to achieve 4.8 GHz. Start with memory as close to stock timings as possible and auto volts. Switch OC to manual mode and disable turbo core. Voltage I started at 1.4V and worked down to a stable 1.35V at 4.8GHz.

Digi+ settings for me are medium LLC, 130% current cap, optimised phasing on CPU and memory with memory current 120%.

Test CPU with either come cinebench runs on loop or 4-5 runs of LinX if you must use a stress test. Once stable, clock your memory and tighten timings.

 

[hbgreg]

Hey guys - first time poster, I'm wrapping up my first build tomorrow, it goes as follows:

CPU: AMD FX 8350
Motherboard:ASUS Crosshair V Forumla-Z
Fan/Heatsink: Zalman CNPS 9900 Max
Some reviews if you aren't familiar with it, I plan to go "under water" next year.
http://www.hardwaresecrets.com/article/Zalman-CNPS9900-MAX-CPU-Cooler-Review/1176/1
http://www.guru3d.com/articles_pages/zalman_cnps_9900_max_review,10.html
http://www.overclockersclub.com/reviews/zalman_cnps9900/

RAM: 16 GB of G.Skill ARES Series 1600.
GPU : Sapphire Tri-X AMD R9290
PSU: CORSAIR AX760 (80+ Platinum)
HDD: 1 TB Western Digital Blue
SSD: 250 GB Samsung 840 Evo
Case: Coolermaster Storm Stryker, the case is a full tower case and very airy, has 4 fans varying in sizes from 200mm to 120mm.

I know that most of that knowledge on my specs isn't necessary for overclocking, but I listed it all just in case anyone had any questions.

It's gonna be my first time overclocking and I'm just asking for advice on how far I should be able to push it, as well as what my volts and other settings should be. I know most of this varies from case to case and everybody's situation is different but any advice would be helpful. Thank you in advance for any help/advice.

- Greg.

 

[cwgk91]

Thought I'd give a quick sit-rep on where Ive got to so far. Managed to get my 8350 running at 5.09Ghz @1.51v, though not ENTIRELY stable purely due to heat restrictions (ie crashes during prime/realbench) but does run BF4 etc well. On cinebench R15 I have managed to get a score of 796 (so close!!)

Trying 3DMark was an interesting experiment. Back on my 4670k on normal firestrike settings, with everything else the same, my high score is 10225, while with my 8350 it is 9591. However, on the Extreme setting my score went up from 5109 to 5295 which I wasn't expecting. Is this due to how the progaram runs, using more threads at higher settings?

Looking at overall scores from a number of runs I have done, on cinebench and 3DMark, going from approx. 4.8 to 5Ghz has an increase of 6-8% on benchmarks on my chip - I havent been able to check power draw. I cant remember a huge amount of my physics, is it a linear relationship between power and voltage?

Assuming my problem is just due to heat, I would need to invest in a better cooling setup. I'm currently using the OcUK fathom AIO cooler which has been doing a good job. How much better would it be if I expanded that system with a second rad and bigger/better reservoir & pump?

 

[gpuerrilla]

Trying 3DMark was an interesting experiment. Back on my 4670k on normal firestrike settings, with everything else the same, my high score is 10225, while with my 8350 it is 9591. However, on the Extreme setting my score went up from 5109 to 5295 which I wasn't expecting. Is this due to how the progaram runs, using more threads at higher settings?

Intel is better at single threaded apps and software compiled to take advantage of their architecture.

You will see the FX do well when threads are utilised properly or they have thought about their inclusion.

 

[alex_123_fra]

Intel is better at single threaded apps and software compiled to take advantage of their architecture.

You will see the FX do well when threads are utilised properly or they have thought about their inclusion.

I'd agree with Thont. 3DMark 11 is a heavily CPU and GPU-dependent bench (in terms of overall score) as is to a similar extent 3DMark. Both will give physics and graphics as well as combined scores and an overall score dependent on resolution. The more threads you have, the better your physics score especially in high IPC scenarios, which in turn will improve your overall and combined scores.

For CPU performance I'd use cinebench R15 which is a solid bench. For GPU performance I'd use Unigine heaven 4.0 to negate as much CPU bias in the score as possible.

 

[cwgk91]

Intel is better at single threaded apps and software compiled to take advantage of their architecture.

You will see the FX do well when threads are utilised properly or they have thought about their inclusion.

Yeah I totally understand and was really expecting the 'downgrade' in benchmarks - I bought the 8350 as a sort of gamble that games in the future are more likely to use more cores/be optimised for AMD architecture/wanted a challenge I was actually surprised by how little I lost out by, and the fact that my score actually increased for the Firestrike Extreme cf. the 4670k.