Can't disable thermal throttling in BIOS. Options?

TRWOV · Apr 14, 2013

Trying to get the most of a 1090T on an Asus M5A78L-M LX PLUS. Not exactly a board made for OCing but I've managed to get 3.84Ghz (240x16).

The deal breaker is that once the chip hits 45C it downclocks to x4 for 5 seconds then goes back to x16 so about 1/3 of the time the PC is crunching it runs at x4. In my experience, this could be corrected easily by disabling thermal throttling in the BIOS but the M5A78L-M LX PLUS doesn't seem to have that option.

Is there a way to stop the throttling in Windows? :banghead:

Specs:
1090T + CM Hyper 212 Plus
Asus M5A78L-M LX PLUS (http://www.asus.com/Motherboards/M5A78LM_LX_PLUS/)
Antec Earthwatts 380
W7 x64

Bios settings:
CnQ: disabled
Turbocore: disabled
LLC: Auto
C1E: Disabled
SpreadSpectrum: N/A
Thermal Throttling: N/A
Quiet fan: disabled
ACC: All cores +12%
Hardware monitor - CPU temp: Ignore
Bios version: 1303 (latest)

Windows settings:
Power options: High performance
AMD chipset 13.1 drivers

Anything I'm missing??? How can I stop this behavior? :banghead:

Bunchies · Apr 14, 2013

i know this doesnt help your problem but Spread spectrum n/a?

on some boards there's hidden settings in the bios. there's different combinations

mine was hitting Ctrl+F1 right when you get in the bios. idk if the thermal throttle would be hidden on your board. but disable all power saver settings in bios and set win7 to max performance in power options just to test

FR@NK · Apr 14, 2013

Are you sure its thermal? 45C is pretty low. See if your vrms are getting too hot.

TRWOV · Apr 14, 2013

Just tested at stock clocks (3.2Ghz) and it does the same thing. I don't have a thermometer but CPUID HM reports board temps at 50C (TMPIN0) and 38C (TMPIN1). Not sure where the sensors are.

cdawall · Apr 14, 2013

What does the actual thermal sensor on the CPU say?

You are probably hitting the OCP built into your cheapo board by overclocking a chip that sits near the current limit of that board stock.

TRWOV · Apr 14, 2013

It does the same at stock clocks. >45C = x4 multi for 5 sec.

At stock clocks the throttling kicks in after the 5th IBT loop (max core temp is always 46C). At 3.84Ghz it starts throttling after the second IBT loop.

ctrl + F1 in BIOS didn't reveal any other options. Under "hardware monitoring" you can set CPU temp as "Ignore" but it doesn't change anything.

The board has "Asus EPU" built in but supposedly you need to install the software for it to work (I didn't install it).

newtekie1 · Apr 14, 2013

I don't think there is anything you can do. The board is throttling the CPU to protect the VRM from over current, the thermal monitoring on the board is to protect from overheating, but I don't think you can disable the protection for the VRM.

TRWOV · Apr 14, 2013

so it seems... maybe I should undervolt and see if I can at least get it to not throttle at stock clocks.

cdawall · Apr 14, 2013

The board only supports a 95w chip according to asus's site. I imagine you wont be able to undervolt enough to grt tyat 1090t in check.

TRWOV · Apr 14, 2013

The PLUS variant supports 125w CPUs. http://www.asus.com/Motherboards/M5A78LM_LX_PLUS/#specifications

The regular LX doesn't: http://www.asus.com/Motherboards/M5A78LM_LX/#specifications

Going to try undervolting and I'll fire a message to ASUS as I didn't find anything after reading the manual and FAQ.

TRWOV · Apr 14, 2013

Completed 10 IBT loops with 235x14.5 (3.4Ghz) @ 1.306v without throttling. Tmax = 43C.

I'll run 100 loops to see if it holds up as I'm going to crunch 24/7 on this.

FR@NK · Apr 14, 2013

You could try AmdMsrTweaker to disable the throttling. Seems that board wasnt meant to pull that much power. You should make sure the vrm area is being cooled adequately. In your screen shot above hardware monitor shows 140watts of power from the cpu; that could mean 160+ is going into the vrms.

TRWOV · Apr 14, 2013

Just read the 1090T specs and it seems that Vcore should be 1.25v(???) Apparently, if left at AUTO the board sends lots of juice to the CPU (HW monitor reports 1.368v).

Running 235x14.5 @ 1.26v ATM

edit: 10 loops completed. I'll try to hit 3.6Ghz next.

edit2: no good. Seems like 3.5Ghz is about the max the board will do without throttling. Running 235x15 @ 1.28v now.

System Name	Dell-y Driver
Processor	Core i5-10400
Motherboard	Asrock H410M-HVS
Cooling	Intel 95w stock cooler
Memory	2x8 A-DATA 2999Mhz DDR4
Video Card(s)	UHD 630
Storage	1TB WD Green M.2 - 4TB Seagate Barracuda
Display(s)	Asus PA248 1920x1200 IPS
Case	Dell Vostro 270S case
Audio Device(s)	Onboard
Power Supply	Dell 220w
Software	Windows 10 64bit

System Name	Bunchies
Processor	Intel i7-960 D0 @4Ghz (1.368v in bios)
Motherboard	Gigabyte G1. Guerrilla ,On the latest beta bios
Cooling	Corsair H60 (2013), Prolimatech Pro-Pk1 Thermel
Memory	Kingston HyperX Blu (3x4GB) = 12GB @ 1400Mhz 8-8-8-22
Video Card(s)	Evga Gtx 660 Ti 2Gb
Storage	1 Ocz Agility 3 Sata III SSD , 2x1 1TB Hardrive's , 1 80GB Hardrive
Display(s)	23.5" Lg Flatron E2341
Case	Thermaltake V3 Black Edition Mid Tower (Moded)
Audio Device(s)	Onboard Sound Chip, X-Fi Xtreme Fidelity and EAX 5.0
Power Supply	Cooler Master eXtreme Power Plus 700W
Software	Windows 7 64-Bit

Processor	7900
Motherboard	Rampage Apex
Cooling	H115i
Memory	64GB TridentZ 3200 14-14-14-34-1T
Video Card(s)	Fury X
Case	Corsair 740
Audio Device(s)	8ch LPCM via HDMI to Yamaha Z7 Receiver
Power Supply	Corsair AX860
Mouse	G903
Keyboard	G810
Software	8.1 x64

System Name	Dell-y Driver
Processor	Core i5-10400
Motherboard	Asrock H410M-HVS
Cooling	Intel 95w stock cooler
Memory	2x8 A-DATA 2999Mhz DDR4
Video Card(s)	UHD 630
Storage	1TB WD Green M.2 - 4TB Seagate Barracuda
Display(s)	Asus PA248 1920x1200 IPS
Case	Dell Vostro 270S case
Audio Device(s)	Onboard
Power Supply	Dell 220w
Software	Windows 10 64bit

System Name	Moving into the mobile space
Processor	7940HS
Motherboard	HP trash
Cooling	HP trash
Memory	2x8GB
Video Card(s)	4070 mobile
Storage	512GB+2TB NVME
Display(s)	some 165hz thing that isn't as nice as it sounded

Can't disable thermal throttling in BIOS. Options?

TRWOV

Bunchies

New Member

FR@NK

TRWOV

cdawall

where the hell are my stars

TRWOV

newtekie1

Semi-Retired Folder

TRWOV

cdawall

where the hell are my stars

TRWOV

TRWOV

FR@NK

TRWOV

Processor	Intel Core i7 10850K@5.2GHz
Motherboard	AsRock Z470 Taichi
Cooling	Corsair H115i Pro w/ Noctua NF-A14 Fans
Memory	32GB DDR4-3600
Video Card(s)	RTX 2070 Super
Storage	500GB SX8200 Pro + 8TB with 1TB SSD Cache
Display(s)	Acer Nitro VG280K 4K 28"
Case	Fractal Design Define S
Audio Device(s)	Onboard is good enough for me
Power Supply	eVGA SuperNOVA 1000w G3
Software	Windows 10 Pro x64