Overclocking A10 6800K

[j0ndafr3ak]

Hello there,
I've been trying to squeeze more performance out of this chip. it's done great so far, but I'd like to ask a few questions.
I have a fm2a85x itx board and g.skill trident x 2x4gb 2400mhz ram. The cooler is Corsair h100i.

I've set the oc mode to manual (no OC presets used)

When I set it to manual, it shows some default values, which I used as a start.

The cpu voltage is set to 1.45, the CPU/NB multiplier to 2400mhz (1800mhz at default) and the CPU NB/GFX voltage to 1.4. These are the main stock values. I disabled turbo core, spread spectrum, c6 state and cool n quiet features. iGPU core clock is @ 1169mhz (it is around 844mhz @ stock)

I've only run a few 5-min stability tests with AMD Overdrive (is it any good?), and managed to increase the cpu multiplier to x48. I'm at a stable 4.8ghz cpu clock frequency @ 1.45v. I know I should run longer tests but as soon as I reach system instability I'll run them on the last stable configuration.

I tried to achieve the same results yesterday, but the system is more stable today. It would hang a lot and even crash on windows boot. I suppose it depended on the CPU NB/GFX voltage which was as low as 1.3v. Now it's .1v higher, the system runs much more stable.

Now, my questions are:

1) how do I know when to increase either the cpu core voltage or the cpu nb gfx voltage? I couldn't go past 4.8 ghz last night. No matter how high the cpu voltage was (I never went past 1.5v) it would be unstable, plus I started to smell burning, so I didn't want to go any higher.

2) I have this option 'CPU NB/GFX voltage'. I guess GFX stands for graphics. Am i supposed to increase it if i want to achieve a higher gpu clock speed?

 

[j0ndafr3ak]

The CPU is more stable at 4.8ghz with a voltage of 1.45625v. at 1.45v it froze. Seems to do fine at the current voltage.

EDIT: I wanna hit 5ghz!

 

[j0ndafr3ak]

UPDATE: A 30-min test has just completed with no errors. this chip seems to run fine at 4.8ghz at 1.45625v.

I tried to increase the multiplier to 49, but even at 1.46825v the stability test wouldn't even last 5 minutes. for 100mhz difference, .012 more volts were not enough. Should I try with a higher voltage? or should I focus on CPU NB voltage now?

 

[CTurbo]

You should be able to hit 5ghz easily if you're not also trying to overclock the graphics at the same time. I hit a stable 4.7 @ 1.429v on first try with a CM TX3 cooler. I have not tried to go any further.

 

[j0ndafr3ak]

You should be able to hit 5ghz easily if you're not also trying to overclock the graphics at the same time. I hit a stable 4.7 @ 1.429v on first try with a CM TX3 cooler. I have not tried to go any further.

I see. Do you know why can't both be overclocked at the same time? Does it depend on the motherboard's power phases? Too few?

what's your gpu core clock?

 

[CTurbo]

It just builds up heat faster when you're overclocking everything at once. I've taken the gpu from 844 to 1100 @ stock voltages while keeping the cpu at stock speeds.

 

[j0ndafr3ak]

Yeah, I managed to do that too. I actually got to 1169mhz on the gpu while the cpu was left at stock (with turbo on).

I'll try to keep the gpu speed at stock (is the cpu nb gfx voltage for the gpu also? should I decrease it?)

btw thanks

 

[CTurbo]

My Gigabyte A88XM has three different voltage settings for cpu, gpu, and nb

 

[j0ndafr3ak]

one more question...
how come does the system become unstable when i increase the FSB? even by a few mhz?

 

[j0ndafr3ak]

My Gigabyte A88XM has three different voltage settings for cpu, gpu, and nb

there's this one option that's called CPU NB/GFX Voltage or something like that. And it's at 1.4v by default

 

[CTurbo]

It's tougher to overclock via the fsb because it overclocks the entire system... Everything from the cpu, gpu, nb, and RAM, to the usb, sata, and pci ports too

 

[M4GHOST45]

So, gentlemen, I have a question. I'm no noob when it comes to PC's and their associated hardware. I understand the basic principles of overclocking, but I am not ashamed to say that I am just getting started in the world of overclocking my APU. I recently upgraded my entire system (new mobo, CPU, SSD, case, fans, cooler, etc...), and now would like to squeeze some more performance out of my processor.

Using AI Suite 3, I was able to get it up to 4.85ghz and stable. Benchmarks were good, temps were good. Then I went a little further, up to 5.016ghz and it was stable. Temps were a little high (35 idle, 52 during 3dMark). But the benchmark scores actually fell from 13500 at 4.85ghz, to 12200 at 5.016. Weird.

Anyway, I was wondering what should the voltages be as AI Suite said the voltage at 5ghz was 1.55... Any help would be greatly appreciated.

 

[CTurbo]

Benchmark scores fell because of massive throttling.

You need to create your own thread instead of hijacking somebody else's 10 month old thread.

 

[M4GHOST45]

Benchmark scores fell because of massive throttling.

You need to create your own thread instead of hijacking somebody else's 10 month old thread.

Didn't mean to high jack the thread. In fact, it fits right in line with what the OP was asking about. I figured, since the "experts" here were already talking about this subject, then they'd be the folks to ask.

You need to learn a little about manners instead of coming across like an @$$ on someone else's 10 month old thread.

 

[j0ndafr3ak]

You're just pushing your apu too hard.. 1.55v is the official max voltage supported by the apu before it gets damaged. I'd not go any higher than 1.5v. As CTurbo said, it may be a throttling issue, that is, it gets too hot.
I've had a 6800k, and I suggest you oc the intergrated gpu before you oc the cpu, since the gpu is the limiting factor here. if you go too high with the cpu clock, it gets really difficult to raise the gpu core clock... it gets really unstable. I remember i could get to 1169 mhz on the gpu core clock without increasing the voltage. then, i managed to get a stable 4.7 ghz on the cpu clock on all 4 cores with a minor voltage tweak on the cpu part. if i went any higher the system would become very unstable. with the settings i just mentioned, i could play bf4 for hours without any issue