Hey bud, I just read most of these forum pages sry after like 10 I kinda quite lol, and I just wanted to say congrats on the pc you did a good job. I also have a similar background with technology and how its grown, it is truly amazing.
Sooo... I'd like to help just a tad. First off you actually dont have an FM2+ you do have an "FM2" big difference sry... unfortunately u cannot drop in an upgrade for a Kaveri FM2+ or any of the derivatives of a 7850k. That being said its really not a big deal anyway your 6800k when properly overclocked will perform pretty much identically like a Kaveri FM2+. I have overclocked on the f2a85x-up4 and have run my old 6800k at 4.8ghz 24/7... I also was able to bench at 5ghz but due to not having a good enough cooler at the time I had to keep it at 4.8ghz, I did all of this on a cooler master v6gt (basically a 212 evo) with dual corsair sp120s in push pull. Unfortunately I had bought a cheap PSU and used it from an earlier build so it was a couple of years old (1-2yrs) and it ended up killing the board and the cpu.
Ok on with the next part yea, if you had an fm2+ board the only upgrade I could recommend would be an athlon 870k but even then all kaveri/godveri fm2+ cpus clock up to a max of 4.4-.5ghz 24/7 stable.... Yea I know theres people out there that claim todo 4.5-4.7 but I call bull****. Either they're doing it wrong and there not actually all that stable (or VERY VERY VERY LUCKY... like loto winner lucky), Ive overclocked x1 5800k, x1 6800k, x1 6600k, x3 760ks, x2 7850ks, x2 860ks and an 870k (this ones mine
also some other OCs like a few phenom 2s, afew x6-x8 FXs and a couple of Intel Haswells from Celerons to i7s ). Since the term "stable" is relative anyway. Thats what I meant by 24/7 stable, which means for me your able to test all aspects of your systems including all realistic "instruction sets" of the cpu including in this case the CPU, GPU (onboard video since its an apu), and the memory controller/northbridge (NB for short).
when overclocking you need to have a stress test regime that encompasses all realistic instructions and tasks that your PC will do (see my challenge bellow for AMD APUs). while doing the actual stress testing use several different programs to check on Temps and Voltage, I like cpuz for the voltage on AMD of course when OC Intel its all about HWinfo64 (but thats a different discussion) and for temps its whatever works with your board. Unfortunately for fm2/+ apus this can be abit wonky to get actual temp readings.... since you have the f2a85x-up4 I would recommend using the gigabyte utility they give for the board I dont remember ATM since I haven't used it in awhile you can download it from they're website.
First for Voltage. NEVER go over 1.48-.49V for 24/7 OC Unless you have cooling that can keep the cpu at like 45C under max load... then maybe like 1.50-.55v but I still woudn't recommend it.
Second for the Temps. What your going for is in the 40-58C range... at like 60-65C the CPU will begin to throttle down in frequency and sometimes voltage depending on mobo... any higher than that at high voltage it will probably go POOF and never turn on again IDK? never done it
The Actual process of overclocking these apus is simple.
First test max NB and RAM speeds using my challenge bellow. Start slow and work your way up you should be able to get about 2200mhz-2400mhz on the NB ( for the NB I believe it took 1.32-.35v to get 2200mhz-2300mhz? NB I cant remember and onboard video stable @1014mhz with 8GBs of 2400mhz DDR3 @ 9-10-10-24-1 timings) and depending on the RAM you can go up to 2400mhz with your DDR3. When you test all parts of the apu simultaneously it puts the most stress on it that can be achieved and if its not stable it WILL FAIL... See Below. A side note you really dont have to OC the onboard video just the NB cus you have a discrete video card. Just use it for stability for now so take (or disable... whatever works) out the GPU to use the onboard till your done OCing.
Second Overclock the CPU (under advanced core features) turn "off" core performance boost (disable) this should also turn "off" turbo cpb aswell otherwise (disable), you can leave cool&quiet (on) c6 (on) and svm (on). Start by leaving your voltage the same as stock and increase the core clock ratio one at a time until unstable (use method I will explain in a sec) then increase the voltage like x2 increments at a time test and continue... This little chart is awsome cus its pretty accurate, it shows freq, to voltage in bios, to what is show in cpuz, at what increment... I forgot who made it but props where due yea.... whoever made it your flippin awesome (probably Stilt or Flanker?) I also didnt put up the complete version that shows Kaveri and godveri because its irrelevant to this and theres way to much info on it.
| A10-6800k VOLTAGE TABLE
| =100 | CPUVolts | -/+ | .Volts. |.-/+ |.°C.|.Rpm..|
| 3800 | 1.112500 | -32 | 1.15200 | -25 | 34 | 1689 |
| 3900 | 1.137500 | -28 | 1.18400 | -21 | 35 | 1700 |
| 4000 | 1.156250 | -25 | 1.20000 | -18 | 36 | 1693 |
| 4100 | 1.181250 | -21 | 1.22400 | -14 | 37 | 1698 |
| 4200 | 1.212500 | -16 | 1.26400 | -07 | 38 | 1698 |
| 4300 | 1.250000 | -10 | 1.30400 | -01 | 40 | 1701 |
| 4400 | 1.287500 | -04 | 1.35200 | +07 | 41 | 1706 |
| 4500 | 1.331250 | +03 | 1.40000 | +14 | 41 | 1713 |
| 4600 | 1.356250 | +07 | 1.43200 | +20 | 45 | 1821 |
| 4700 | 1.400000 | +14 | 1.48000 | +27 | 47 | 1869 |
| 4800 | 1.450000 | +22 | 1.54400 | +38 | 53 | 2091 |
| 4900 | 1.512500 | +32 | 1.62400 | +50 | 53 | 2057 |
| 5000 | 1.593750 | +45 | 1.70400 | +63 | 52 | 2011 |
| A10-5800k VOLTAGE TABLE
| =100 | CPUVolts | -/+ | .Volts. |.-/+ |.°C.|.Rpm..|
| 3800 | 1.193750 | -19 | 1.21875 | -15 | ## | #### |
| 3900 | 1.212500 | -16 | 1.25000 | -10 | ## | #### |
| 4000 | 1.237500 | -12 | 1.28125 | -05 | ## | #### |
| 4100 | 1.268750 | -07 | 1.32500 | +02 | ## | #### |
| 4200 | 1.300000 | -02 | 1.35625 | +07 | ## | #### |
| 4300 | 1.343750 | +05 | 1.39375 | +13 | ## | #### |
| 4400 | 1.375000 | +10 | 1.42500 | +18 | ## | #### |
| 4500 | 1.418750 | +17 | 1.47500 | +26 | ## | #### |
| 4600 | 1.462500 | +24 | 1.55000 | +38 | 50 | #### |
| 4700 | 1.525000 | +34 | 1.62500 | +50 | 49 | 2311 |
| 4800 | 1.600000 | +46 | 1.70000 | +62 | 48 | 2261 |
| 4900 | 1.687500 | +60 | 1.77500 | +74 | 53 | 2410 |
Ok now on to the Voltage stability and misc info, to get your Voltage stable you'll have to use whats called LLC or "load line calibration" it compensates for voltage droop under load. Basically keeps the voltage from dropping below what you set in the bios when under load but if you set it high enough the voltage will spike and jump up too high when under load. So you'll have to change it depending one what voltage and freq you have set. You can find it in the "Advanced Voltage Settings" tab and your gonna have one for both the NB and CPU. The CPU one is easy as you just watch and compare what setting you have in bios to whats in cpuz try to get them as close as possible. The main thing is to get it so the voltage does NOT TWITCH or MOVE at ALL under load (this can be a whole other discussion on its own especially with asus fm2+ and intel boards equipped with Transient Frequency Response settings) this can be hard... you can try different LLC settings or change CPU voltage by x1 increment. Sometimes stability can be attained just by making sure the voltage doesn't twitch (also helps with benchmarks esp on "intel burntest" "standard test" if you can keep the voltage from twitching you'll get an extra gflop or so on your score per run). The NB LLC is kinda hard... play with the medium to high settings as theres no sensor reading to see if its drooping or not. Your power supply can effect this though so depending on how good it is it may be very hard if not impossible to get the voltage to not TWITCH.
Now for the CPU Stress regime only part (also my regime for regular CPU parts... small variations for intel tho but thats another discussion) use intel burntest (also prime95 use small FFTs or whatever you want I dont really use it anymore... burntest is faster) on standard test for 10 runs this should be "default" if you pass with your voltage NOT TWITCHING try a higher cpu multiplier until you want to go for 24/7 stability. Then move to the "x264 Stability Test v2.06". You can find it on the Haswell overclocking page from: HERE
look under the Stressing portion of his post. Set to use all 4 threads on high priority for like 4 passes... if you pass go for the challenge bellow again and see what happens.
This is my challenge (even for anybody reading this on a whim... yes you lurkers
). Stress "2" threads of your cpu with either intel burntest or Prime95. Stress "1" thread with the windows version of memtest with like maybe 2048mb used you can get it from: HERE
(yes the little gui version that runs in windows). Then run Furmark on the onboard GPU, if you can run this for 20min-1hr your probably rock stable. Then just finish up with a long term test of "x264 Stability Test v2.06" (see above for how to download it) for like several hours (1-4hrs) if no problems your done otherwise go back and try again.
I'm sry if this has been Little long lol.... and I'm sure my grammar at this point is smashed to foobar... its been along day and this took awhile to type up.
Anyway have fun overclocking and learning new **** I'll see you around... I'll probably check back when I can IDK? maybe.