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

Finished my overclock this week and managed to get 4.8GHz stable at 1.4V. My systems is detailed in my signature and in this build thread: http://forums.overclockers.co.uk/showthread.php?t=18578705 Detailed settings as follows:

System Frequencies:
CPU ratio: 16
Bus: 300MHz
RAM: 2400MHz
CPU/NB: 2400MHz
HT: 3600MHz
CPU: 4800MHz

Voltages (reported in OS using AIDA64 or CPU-Z):
CPU: 1.35V (1.354V at idle and 1.404V at load)
CPU/NB: 1.2125V (1.217V-1.23V)
NB: 1.2125V (1.224-1.230V)
NB HT: 1.3125V (1.323V)
SB: 1.113V (1.111V)
DRAM: 1.66V (1.654-1.66V, was only 1.647V when set to 1.65 so changed it.)


DIGI+ Power Control:
CPU LLC: Extreme
CPU Current Capability: Disabled
CPU Power Phase Control: Extreme
CPU Power Switching Frequency: 300Khz
CPU Power Response Control: Ultra Fast
CPU Power Thermal Control: 151°C
CPU/NB LLC: Extreme
CPU/NB Current Capability: 130%
CPU/NB Power Response Control: Ultra Fast
DRAM Current Capability: 130%
DRAM Power Switching Frequency: 300Khz
DRAM Power Phase Control: Extreme

When testing to see if it was stable I used OCCT, RealBench and AIDA64. It maintained stability overnight in all applications and the last test was to use OCCT and Unigine Heaven Benchmark running simultaneously all night to add GPU heat to my watercooling loop. My room got up to 27°C overnight and liquid temp was up at 36°C with CPU at 72°C and GPU at 51°C. When adjusting voltages to stabilise the system I forgot to change the Power Switching Frequency in the DIGI+ options but it seems not have needed it. I was able to run Windows and do a run of Cinebench at 5.1GHz but couldn't get it to pass the stress tests without upping the voltage above levels I was uncomfortable with. Maybe next year once I can afford to replace the machine I'll try to get the CPU above 5GHz and stable with higher voltages but until then I am comfortable with the voltage being put into the system at the moment. The motherboard VRMs get very hot to the touch but I have a fan blowing directly over them and when I was checking heat on the board that fan is not assisting because it is on the side panel that gets removed. I plan on getting some more Noctua fans to complete the build but at £80 for 4 fans that I want the upgrade can wait, the system has been optimised for really low noise now that overclocking is done but the Enermax and Akasa fans don't have the right blend of noise and performance I am after. Since using the Noctua NF-F12s I can understand why they are so highly regarded, they really are premium fans.
 
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PapaLazaru said:
Cheers,

Going to order one and get a couple of new fans for my cooler.

Just one question (as you have the same mobo).

What is the fastest RAM it will take? Will it even take this ram?

Seen this deal as well and wondering if it is worth it over my Corsair Vengeance 1600Mhz?

http://forums.overclockers.co.uk/showthread.php?t=18592900
Click to expand...

Site says 1866mhz, I would (if ordering now) snap up the recently advertised AMD 'gamer' memory.
 
Luck... I spent the last 18 months fault testing various components of my system. I had to send my RAM back twice because it was faulty, had 2 faulty Z77 motherboards and one graphics card that burst into flames in my machine. During all of these problems I had re-installed Windows multiple times and uninstalled and re-installed games and graphics drivers to try and find what was causing the various errors I was experiencing. At one point I got my parents system to use while I was figuring out what was wrong with my own and found that it wouldn't turn on at all, no idea why. So I had my system in pieces trying to isolate a faulty component and at the same time another machine that was my responsibility that was not functioning as it should that I was supposed to be borrowing until mine was fixed. After all the problems were troubleshooted and solved I found that my second monitor randomly turned off and started to display text strangely so had to replace that as well.

My system not only cost me a fortune in money but also in time. If you balance out all the problems I've had over the years with all the better than average hardware I've had I still end up worse off than average. This bit of luck is but a small crest hidden among some very deep troughs.
 
ive formatted my pc and reset MB and lost all my OC settings, anyone with experience with the asus M5A99FX r2.0 post screenshots of an fx8350 overclock? also a list of programs that can get me started :D

or if anyone can refer me to a post
 
Hey all, quick update again - managed to get 5011Mhz stable for every day use (at 1.48v), mixing 270Mhz bus with 18.5x multi :D Even manages to pass asus realbench (somehow) with temps of 65C :eek:
 
An update guys, as I've finished my rig now with 2x240 rads instead of 2x120 rads I've started again with my overclock. This time I'm just doing a multiplayer only overclock so I've set the fsb to 200, ram 1866mhz, nb 2400, ht 2600. Currently passed amd overdrive stability tests up to 4.6ghz @1.4v. I'll post a google doc when I'm done with the results.

I have a general cpu voltage question tho. With it set in the bios to 1.4875v I'm getting 1.464v max. Is the 1.55v limit apply to the setting in the bios or the voltage reading in hwmonitor?

Cheers, Damien.
 
I got my FX8320 this afternoon, I can hit 5Ghz but i am hitting 70C which is when it starts to become unstable. I am also waiting for my IC Diamond 7-Carat to get here since i am using some Arctic cooling generic gunk. Currently using a Gigabyte 990FXA revision 1.0 motherboard so have no load line calibration which may also be effecting stability. So may be in a market for a new motherboard too. AT the moment i am just staying at 4.5GHz with stock voltages.

mfik.png
 
I am using a Thermalright Sliver arrow with the 2x stock 140mm fans. Motherboard is crap really can't complain it's 3 years old now lol. Still thinking of getting a new motherboard with load line calibration, maybe an ASUS Formula Z. Then i can sell my Phenom II and this motherboard on.

Although not 100% stable in Prime95 i can play games and everything fine since it doesn't max out all the cores, still during games it hits 61C. I have decided to disable C1E and cool and quiet for the time being to make sure it is more or less stable.

Still gotta get round and get my ram speed up. Since a couple of weeks ago i bought AMD's 16GB PC17000, but just want to see how far i can push it.
 
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I'd strongly recommend the formula z - its what I use and its brilliant. I admit that I havent had any experience with any other AM3+ mobos, but this one was simple to use and it gave me the results I wanted.

Mine isnt p95 stable either - core 6 always fails after a few seconds with any OC on it - I use realbench instead as it simulates quite well the sort of stress that bf4 can put it under.

How is the AMD ram?? Ive been tempted by some myself I have to say
 
Guys just got an 8320 and a Asus Crosshair V Formula

Been a long time since I messed around with AMD overclocking. Everthing is under water and i've got the memory setup ok.

Could someone give me a good place to start? Multi to try, FSB to change, HT to change, max voltage, etc?
 
The FX chips seem to be ok at voltages of 1.5V, when set to auto my voltages ranged from 1.428V to 0.84V; I would be hesitant to go above 1.5V but it has been done many times.

I personally like to get the FSB as high as it will go before fiddling with the CPU multiplier so start with setting RAM and CPU multipliers low and get the HT setting at its highest and start pushing the BUS frequency up in 10/20MHz increments. Once you find a stable point for the HT you should fiddle with the BUS frequency to give you a point where it matches memory ratios suitable for your RAM; my 2400MHz RAM works well with 226MHz, 260MHz and 300MHz BUS frequencies but with different rated speeds you'll find different sweet spots to me.

After I've found a spot that gives me an overclocked HT I start to adjust the CPU ratio to see what speeds it will be able to handle. FX CPUs overclock well under water so you should be able to start at 4.5GHz and work your way up from there.

For more details look at this guide: http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard
 
So had a tweak.

Currently at
250 FSB
Multi 19.5
4890MHz
HT 2250
NB 2250
Memory 1000Mhz

Small FFT stable with max temp of 54 degrees. Get errors on the large however so will mess around more tonight.

I need better memory with tighter timings really at the moment
 
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