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Throttling on Asus M5A97 LE R2.0, temps not so high, y?

post #1 of 20
Thread Starter 
Hey guys, recently I bought an FX8320 paired with this ****ty motherboard, it was a rushed decision, so didn't properly investigate it..

So, I now have a system with these specs:

HDD's: VelociRaptor 300GB, WESTERN DIGITAL WD1502FAEX 1.5TB CAVIAR, 120GB Samsung 840 Evo, SEAGATE ST2000DM001 2TB
PSU: Corsair 550VX
Graph card: MSI GTX 760
CPU Cooler: Akasa 876
FX8320 8 core, 3.5/4 GHZ"
G.Skill 2x 4GB Dual Channel Ares DDR3 2133, 11-11-11-30
Corsair Carbide 200R with 4 120mm fans.
LG GH22NS70 SATA DVD Writer

Now, I know the mboard is only 4+2 phase and also has no heatsinks on VRM.
However, even when running completely stock, with all the right power options disabled, shortly after I run Prime95, CPU temps go up to 59c, CPU socket 51c (average idle CPU temp is 38, and socket is 24) AND THEN it throttles down/drops voltage. This is with a small fan attached to the backside of the motherboard on the CPU socket.

I tried AMD overdrive too (enable/disable turbo core etc) but it still throttles.
I tried oc to 4.1GHZ from voltages 1.2v-1.4v, it boots and works no problem but as soon as it heats up it throttles down again so what's the point.

Now, I know this is probably due to the mboard. So I'm going to return it, and already bought the Asus M5A97 EVO R2.0 instead and waiting for it.

I just have 2 questions:


1) Will the EVO mboard fix all of this throttling nonsense???

2) Aren't the temps I'm seeing quite low for throttling to kick in?

Thanks
post #2 of 20
A) Have you disabled APM in the BIOS? With APM in BIOS most boards will throttle with Prime95.

B) If APM is disabled, then likely the mofsets are overheating, they have no heatsink. The Evo should have no such problem.

c) The temps are low, this is why i ask if you have disabled APM. But, it could be that the lack of mofset heatsink is enough to overheat them.

In alternative, you can undervolt. For stock, you don't need all that power. Disable turbo, APM and lower your vcore.

Same procedure as in here:

http://www.overclock.net/t/1494490/fx-6300-reaching-63-celsius-without-oc

Since you have 8320, more or less, the voltages are the same as FX6300. So for starters, you could try at stock a voltage in CPU-Z under load of 1.25v. This should drop temps like a rock. Then, if you are stable, you can go lower.
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FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
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CPUMotherboardGraphicsRAM
FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
Hard DriveHard DriveOptical DriveOptical Drive
Crucial BX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
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post #3 of 20
Thread Starter 
If I disable APM, the PC hangs under Prime in 1 minute..

I also just thought about it, could it be that my CPU cooler is not up for the job anymore?
I was using it in 2 past systems (in a case with lower airflow) with overclocked and overvolted AMD 5000+ and with overclocked Phenom II and max CPU temps never got above 57c and 46c respectively..

Is 59c considered a low enough temp for the FX8320? (I live in cyprus and right now, even with a/c, ambient temp is around 31c).
post #4 of 20
Thread Starter 
what's a good low enough voltage for the stock 3.5ghz speed so that it doesn't throttle (but not so low to lock up or slow down due to low voltage)?
post #5 of 20
Thread Starter 
oops, I just saw, 1.25v..
hehe.
I'll try..
post #6 of 20
Thread Starter 
well I just tried what u segguested, apm and turbo core disabled, cpu voltage 1.25v all at stock speeds (manual 17.5x multiplier 3.5GHz).
I also found out that when disabling the chasssis fans, they spin at 100% in reality.. and also set up the cpu fan as user mode to start at 100% sooner..

This time it held up a little longer (before throttling again) at these temps after 2 minutes:

cpu socket 46c and cpu 57c.


I'm also guessing the socket temp is not so imprtant cause there's no way it would throttle at just 46c. It seems it's all the VRM's fault..


I hate this throttling bs and can only hope that it will be cured in the EVO motherboard.


thanks for the help
post #7 of 20
This is an odd behaviour, i can go up to 70C socket temeprature and nothing happens. Usually, you want your core to be lower than 62C and the CPU socket temperature to remain to logical temperatures (so, let's say below 65C max).

That you disable APM and crash, is bad sign. It shouldn't happen. It could be that the mofsets are overheating in deed. You could also look for some BIOS setting about thermal throttling, maybe it's set at a too sensitive level, but i have no ASUS motherboard, so i don't know what you should be looking for exactly.

If you want to change motherboard and be even more sure nothing will happen, get the Gigabyte 970 UD3P (8+2 phase, more than the Evo, which is 6+2).
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FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
Hard DriveHard DriveOptical DriveOptical Drive
Crucial BX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
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CPUMotherboardGraphicsRAM
FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
Hard DriveHard DriveOptical DriveOptical Drive
Crucial BX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
CoolingOSMonitorKeyboard
Scythe Katana 3 Windows 7 Pro 64bit ASUS 22" VS228HR Microsoft Wired Keyboard 600 
PowerCaseMouseAudio
EVGA 430W Sharkoon VG4-V Logitech M90 Onboard 
CPUMotherboardGraphicsRAM
FX-8300 Asrock 970 Extreme3 HIS 6570 Silence Corsair XMS3 1600Mhz 8GB (2x4GB) CAS9 
Hard DriveHard DriveOptical DriveCooling
Plextor M6S 128GB Toshiba 2TB SATAIII LiteOn Blu Ray burner IHBS 112-2 Xigmatek Balder 
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post #8 of 20
Thread Starter 
If I disable APM it only crashes when overclocked.
In bios there's no thermal throttling option anywhere..
It's them mosfets, I'm sure of it.
I already ordered the EVO, but hey, if it also throttles, I'll just send it back again and maybe try the Gigabyte 970 UD3P.
lol
post #9 of 20
Thread Starter 
according to this: http://www.overclock.net/t/1202751/amd-fx-cpu-throttling-fixes-please-sticky/40

Gigabyte mboards also throttle and generally suck with overclocking of newer FX processors, even 990FX boards, it seems it has less to do with phases and more to do with cooling VRM's
post #10 of 20
Quote:
Originally Posted by brainii View Post

according to this: http://www.overclock.net/t/1202751/amd-fx-cpu-throttling-fixes-please-sticky/40

Gigabyte mboards also throttle and generally suck with overclocking of newer FX processors, even 990FX boards, it seems it has less to do with phases and more to do with cooling VRM's


That was a problematic revision of a specific model.

http://www.overclock.net/t/946407/amd-motherboards-vrm-info-database
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FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
Hard DriveHard DriveOptical DriveOptical Drive
Crucial BX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
CoolingOSMonitorKeyboard
Scythe Katana 3 Windows 7 Pro 64bit ASUS 22" VS228HR Microsoft Wired Keyboard 600 
PowerCaseMouseAudio
EVGA 430W Sharkoon VG4-V Logitech M90 Onboard 
CPUMotherboardGraphicsRAM
FX-8300 Asrock 970 Extreme3 HIS 6570 Silence Corsair XMS3 1600Mhz 8GB (2x4GB) CAS9 
Hard DriveHard DriveOptical DriveCooling
Plextor M6S 128GB Toshiba 2TB SATAIII LiteOn Blu Ray burner IHBS 112-2 Xigmatek Balder 
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Windows 7 Pro 64bit Samsung S22B350H Microsoft Wired 600 Corsair VS350 
CaseMouseAudio
Lepa LPC 306 Logitech M90 Onboard 
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Main
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CPUMotherboardGraphicsRAM
FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
Hard DriveHard DriveOptical DriveOptical Drive
Crucial BX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
CoolingOSMonitorKeyboard
Scythe Katana 3 Windows 7 Pro 64bit ASUS 22" VS228HR Microsoft Wired Keyboard 600 
PowerCaseMouseAudio
EVGA 430W Sharkoon VG4-V Logitech M90 Onboard 
CPUMotherboardGraphicsRAM
FX-8300 Asrock 970 Extreme3 HIS 6570 Silence Corsair XMS3 1600Mhz 8GB (2x4GB) CAS9 
Hard DriveHard DriveOptical DriveCooling
Plextor M6S 128GB Toshiba 2TB SATAIII LiteOn Blu Ray burner IHBS 112-2 Xigmatek Balder 
OSMonitorKeyboardPower
Windows 7 Pro 64bit Samsung S22B350H Microsoft Wired 600 Corsair VS350 
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Lepa LPC 306 Logitech M90 Onboard 
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Overclock.net › Forums › AMD › AMD Motherboards › Throttling on Asus M5A97 LE R2.0, temps not so high, y?