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Best microATX board for 8320e? - Page 2

post #11 of 18
Thread Starter 
Quote:
Originally Posted by buildzoid View Post

Uh the 970M Pro3 is much better. I have both of the boards. The Pro3 has less voltage drop, more voltage settings and got a 100mhz better IBT stable overclock and could boot 300mhz more than the Gigabyte with an 8320e. The only problem with the Pro3 is that the heatsink on it is inferior to the one on the gigabyte.

The asrock one? I can't get it to overclock at all. Maybe mine is defective or something but 3.8ghz is all I can get stable.
post #12 of 18
Quote:
Originally Posted by lemans81 View Post

The asrock one? I can't get it to overclock at all. Maybe mine is defective or something but 3.8ghz is all I can get stable.

Did you try putting a fan on the vrm?
post #13 of 18
Thread Starter 
Quote:
Originally Posted by buildzoid View Post

Quote:
Originally Posted by lemans81 View Post

The asrock one? I can't get it to overclock at all. Maybe mine is defective or something but 3.8ghz is all I can get stable.

Did you try putting a fan on the vrm?

I put a 5.25 hdd bay fan blowing down on them, it has 3x50mm(maybe 40mm) 40cfm fans that are insanely loud, still nothing. I can't even get it to boot into windows over 3.9ghz.
post #14 of 18
Quote:
Originally Posted by lemans81 View Post

I put a 5.25 hdd bay fan blowing down on them, it has 3x50mm(maybe 40mm) 40cfm fans that are insanely loud, still nothing. I can't even get it to boot into windows over 3.9ghz.

Odd. Mine happily chugged along at 4.75Ghz with 1.55V set in BIOS(1.535V on DMM! no droop!) until it throttled because the VRM hit 100+C. If the VRM had better cooling I bet the board would've run 4.75Ghz without any issues. To cool the VRM I was using the fan from the 8320E stock heatsink.
post #15 of 18
Quote:
Originally Posted by buildzoid View Post

Odd. Mine happily chugged along at 4.75Ghz with 1.55V set in BIOS(1.535V on DMM! no droop!) until it throttled because the VRM hit 100+C. If the VRM had better cooling I bet the board would've run 4.75Ghz without any issues. To cool the VRM I was using the fan from the 8320E stock heatsink.

I wouldn't run 1.55v on a 4+1 board for too long. Pretty sure the power delivery isn't made for that kind of voltage long term.
post #16 of 18
Thread Starter 
Quote:
Originally Posted by Duality92 View Post

Quote:
Originally Posted by buildzoid View Post

Odd. Mine happily chugged along at 4.75Ghz with 1.55V set in BIOS(1.535V on DMM! no droop!) until it throttled because the VRM hit 100+C. If the VRM had better cooling I bet the board would've run 4.75Ghz without any issues. To cool the VRM I was using the fan from the 8320E stock heatsink.

I wouldn't run 1.55v on a 4+1 board for too long. Pretty sure the power delivery isn't made for that kind of voltage long term.

Literally set it, rebooted...failed win10 boot...took it back down.
post #17 of 18
Quote:
Originally Posted by Duality92 View Post

I wouldn't run 1.55v on a 4+1 board for too long. Pretty sure the power delivery isn't made for that kind of voltage long term.

Honestly when I started IBT at that voltage I was expecting the low side MOSFETs to blow up and take my 8320E to hell with them. The MOSFETs are nameless however I suspect them to do 15-30A at 125C. There's 3 of them per phase in the Vcore section and 2 in the CPUNB section. So that gives you 120A to 240A on the low side for Vcore. Just for the sake of safety lets assume they do 120A though I'm inclined to think that they do 20+A because if they didn't I wouldn't have an FX 8320E. Once I'm back in parents house for Xmas I'll check the power draw that causes the board to throttle.

I think if you somehow managed to keep the VRM at 65C you could run 1.55V through it just fine. But unless I get a data sheet for those MOSFETs I would only run that board up to 1.45V because 1.45V with a fan on the VRM doesn't hit the OTP. On the other hand the Gigabyte is limited to only 1.375V in BIOS but the Extreme LLC setting gives the boards some absolutely outrageous Vboost in idle and under load. I swear I saw the board hit 1.525V before the OCP kicked in when I was testing the Gigabyte.
post #18 of 18
My UD3P 2.0 is 8 phase (4 phase with doubler) and it's not happy beyond 4.6 or so. I'm conservative about temperatures, though. I won't let the chip go into the 60s and I won't let the VRMs go into the 90s. With high-performance mode on I think the board is basically limited to 4.5. With a fake overclock (all the performance-killing power stuff on) you can get to 4.7 or so.

If you want strong overclocking I guess you need to get a true 8 phase board.
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