This is a split board - You can return to the Split List for other boards.

7990 bottlenecked by FX-8350 due to vdroop. PSU or Mobo?

#41TheFeshPince(Topic Creator)Posted 8/23/2013 1:42:33 PM
GreenMage7 posted...
TheFeshPince posted...
Ok, so... voltage was "around" 1.4v like I said. I can't give any exact numbers since I have already set my BIOS back to normal, but below 1.4v @ 4.6ghz and I get instant BSoD during Windows loading screen.

The temps reached max 64C during Prime small FFT and generally below 60C during games at 4.6ghz and 1.4v.

The CPU can't pass small FFT above 4.4ghz at pretty much any voltage up to 1.45v. However, it can pass, right now, at 4.4ghz and stock voltage.

I am using a Hyper 212+ with MX-4.


Well, assuming you have the thermal paste it wouldn't hurt re-apply it and make sure the heat sink is properly seated.

http://www.youtube.com/watch?v=-hNgFNH7zhQ

However, did you check the specific notes on the overclock guide that specifically reference your exact motherboard?

M5A97 Notes:

It seems that the LLC functions on some of the M5A97 Motherboards does not function as intended.
If you run into stability issues and strange voltages using LLC, it's recommended to leave it set to Auto.


I thought at some point you said you turned this on. Seems to be a quirk with that board. Like I said, don't go making sweeping changes with your hardware until you are absolutely sure you know what the problem is. You will almost definitely regret it. If we figure out what is wrong and you still want to then it is on you. But paying a large percentage of money for a very small percentage of performance is generally not a good idea.

Edit: TheFeshPince posted...
Specs:

Asus M5A97 R2.0

I have disabled APM Master Mode and all other power saving options in BIOS as well as enabling LLC. None of these changes have made a difference. I still get vdroop eventually. Some of these options enabled or disabled can make the vdroop occur more often, but either way it happens.


So yeah, that might be it, and you said your voltages were wacky. Your temps still seem a little high so I would make absolutely sure everything is okay in there as well. Remember, it's 62C core temp (package in HWMonitor) and a little over 70C socket temp (Temperatures --> CPU in HWMonitor) for AMD. Let us know how it goes.


Thank you for all of your help. I do have extra MX-4 sitting around. So, I am going to re-apply the thermal paste and re-seat the heat sink and see if that helps.

I guess I didn't really make myself clear before about the LLC options in the BIOS. It acts the same whether or not the LLC is enabled, but the voltage drops are actually worse when enabled, so I have been leaving it to Auto (which basically means off). It's sad to hear that the board has issues with LLC.

The CPU temp in HWMonitor is the temp that hits 64C. The package temp never hits 60.
---
http://i.imgur.com/J0lvB6S.jpg | http://i.imgur.com/DoHj9yA.jpg | http://youtu.be/YXkx-PSwbG4
#42redrum187Posted 8/23/2013 2:49:34 PM
i would get a new cpu cooler the CM hyper 212 is rated to dissipate 180W according to cooler master and you are probably near or exceeding that with your overclocked FX-8350.
---
i still haven't found what i'm looking for...
#43TheFeshPince(Topic Creator)Posted 8/23/2013 2:53:33 PM
redrum187 posted...
i would get a new cpu cooler the CM hyper 212 is rated to dissipate 180W according to cooler master and you are probably near or exceeding that with your overclocked FX-8350.


I didn't even think of that. Thanks.
---
http://i.imgur.com/J0lvB6S.jpg | http://i.imgur.com/DoHj9yA.jpg | http://youtu.be/YXkx-PSwbG4
#44fuzzymanPosted 8/23/2013 3:22:16 PM
I run a Corsair H80 @4.6 and my temps are well below 50C during gaming

Noctua DH14 is another good choice, or any performance AIO liquid cooler
---
http://i.imgur.com/hOjV6w3.jpg
#45GreenMage7Posted 8/23/2013 3:28:31 PM(edited)
fuzzyman posted...
I run a Corsair H80 @4.6 and my temps are well below 50C during gaming

Noctua DH14 is another good choice, or any performance AIO liquid cooler


Yeah, I also have an H80i but I will warn you they are loud. The big Noctua heatsinks offer similar performance but are much quieter. Though if you are running 6 case fans at max I doubt you care about noise.

Still though, if your temps are below what I listed I don't think that is currently the problem. That's why I keep warning you about buying new hardware before you are 100% sure what the problem is. It's possible you could get a new cooler and still have problems because maybe the board was actually the problem. That's why it's so important to watch the temps while you run things. Keep trying to get to the root of the problem.
#46TheFeshPince(Topic Creator)Posted 8/23/2013 3:31:58 PM
GreenMage7 posted...
fuzzyman posted...
I run a Corsair H80 @4.6 and my temps are well below 50C during gaming

Noctua DH14 is another good choice, or any performance AIO liquid cooler


Yeah, I also have an H80i but I will warn you they are loud. The big Noctua heatsinks offer similar performance but are much quieter. Though if you are running 6 case fans at max I doubt you care about noise.

Still though, if your temps are below what I listed I don't think that is currently the problem. That's why I keep warning you about buying new hardware before you are 100% sure what the problem is. It's possible you could get a new cooler and still have problems because maybe the board was actually the problem. That's why it's so important to watch the temps while you run things. Keep trying to get to the root of the problem.


I was looking at getting the h100i or Kraken x60, but yeah, I agree with you. I need to narrow it down. I'll be honest. I'm pretty sure it's the motherboard's voltage regulation like Snuckie suggested at the beginning of this thread. I was always monitoring temps when overclocked and I never hit 60C package temp like I said and hit 64C max CPU temp.
---
http://i.imgur.com/J0lvB6S.jpg | http://i.imgur.com/DoHj9yA.jpg | http://youtu.be/YXkx-PSwbG4
#47gastamanPosted 8/23/2013 3:38:32 PM
TheFeshPince posted...
'm pretty sure it's the motherboard's voltage regulation like Snuckie suggested at the beginning of this thread.


That's what I'm thinking also...
---
//Intel// Core i7 2600k @ 4.2 //Gigabyte// Z68X-UD7-B3 //MSI// 3x GTX 580 Lightning SLi
//Corsair// 650D / H100 / 120 GB Force 3 / 12 GB Dominator / AX1200
#48GreenMage7Posted 8/23/2013 3:39:50 PM
TheFeshPince posted...
I was looking at getting the h100i or Kraken x60, but yeah, I agree with you. I need to narrow it down. I'll be honest. I'm pretty sure it's the motherboard's voltage regulation like Snuckie suggested at the beginning of this thread. I was always monitoring temps when overclocked and I never hit 60C package temp like I said and hit 64C max CPU temp.


Well, if you are seriously considering I can hit 5 GHz stable on this one:

http://pcpartpicker.com/part/asus-motherboard-sabertooth990fxr20

And it only heats up above unsafe temperatures in extreme blend in Prime 95 on the H80i.

Still, do me a favor and check your GPU utilization in the games you are having problems with at both 4.0 GHz and 4.4 GHz and see if it is actually bottlenecking you. And how much of a performance increase that 10% is. If that is what you are worried about (like you suggested) it's possible you aren't being bottlenecked in the games you are playing. Let me know how that goes. I have to go to fantasy football draft right now but I will probably be on later tonight or maybe someone else will help you with that.