What should I do to achieve higher overclock? [FX-6300]

[Kograth303]

Hi guys. I have the following system, in which I am asking for help to see what is happening around my system... Could you please help?

MOBO: Asus M5A99FX
CPU: FX-6300
Cooler: DeepCool Storm Lucifer

Current OC (fully stable and cool):

-> CPU: 4.8Ghz @ 1.3875v (give or take 0.0125 as I can't recall it at the moment)
-> NB: 2.6Ghz @ stock voltage.
-> HT: 2.6Ghz @ stock voltage.

OC I wish to achieve:

-> CPU: 5.0Ghz @ 1.45v
-> NB: 3.0Ghz (please suggest voltage)
-> HT: I am fine with the current speeds.

Problems I had during multiple tries:

1. For the CPU: Above 4.8Ghz I couldn't seem to stabilize the PC, whenever the Passmark benchmark or AIDA hit the FPU benchmark/stress test the PC would shut down instantly. Might I mark I DID NOT HAVE ANY heat issues or voltage issues, more said I should not be having voltage issues @ 1.45v and while running AOD (AMD OverDrive tool) the system would be stable during the stress test though it would simply just shut down.

2. For the NB: Above 2.6 (as in 2.8 or 3.0Ghz setting) any voltage I would put on it the PC refuses to boot. I do fear that the voltage is set, though the MOBO is not supplying enough power.

I have a 750W PSU, it should be more than enough for this OC.

What I think is happening:

I never touched the DIGI+ Power Controls to manually set the Load Lines, Current Capabilities, Power Phase and Frequency Controls. Should I be setting this to Ultra High/Extreme to get the additional boost out of it? I do feel like there seems to be a sudden voltage drop when the FPU gets hit by a huge load and therefore the PC shuts down because the Phases do not respond in time.

Is my idea close to what's happening? Anyway this should be interesting to discuss. I hope to hear from you guys! Thank you in advance!

 

[CountMike]

It's kinda wander you got stable 4.8GHz OC. 5GHz is a bit over ambitious. There's always a hard jump in required voltage at some point which you obviously reached. You'll probably need well over 1.5V for 5GHz. It's not easy with 6350 which is much higher binned.

 

[Kograth303]

Hello @CountMike!

Well, as an update, I managed to get 5Ghz with stable OC, though I was not able to get more out of the NorthBridge frequency, so at the moment I am at 5Ghz stable, with 1.4675 (I must admit it, this low voltage amazes me) and I decided to OC the rams as well, so I managed to get 2400Mhz from 1866Mhz cards. Which is really nice so far. I will see what happens in time, I will definitely have to run a 24H stability test as for now I only did 1H of stress testing yet.

 

[CountMike]

Ugh, start buying real lottery, you won this silicone lottery BIG !

 

[Kograth303]

Second update log:

I ran a 3 hour stress test and I started playing games, the PC uptime was all day long at 12+ hours, the heat of the CPU was cool, and the RAM were ok as well, though there was a strange noise coming from the motherboard at full load. I feel like I pushed my VRMs really far, because that's what I think my noise was coming from... I know I heard that noise before when I tried OCing my CPU on a 4+1 phase motherboard, and now at 5Ghz I think that the phases are giving up so I decided to back up. It was a good ride, but I am not risking blowing the motherboard. A motherboard upgrade would be nice to an 8+2 phase setup instead of a 6+2 of my current MB, though at this late stage, I think I would be really better off going after a new rig, new setup. Maybe wait for the Zen series to come out.

@CountMike, any thoughts?

 

[CountMike]

Zen is some long time in coming, I don't think you'd see any performance loss if you drop it to 4.8GHz. Just not worth frying VRMs and MB with it like I did with a GA-790.