Dr debug CPU temp monitoring is not what you think

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   No reason not to be excited with Dr debug feature to allow check on cpu temp in all times without the need of a 3rd party software that would consume system resources right ? Wrong !How did i find out : After a CMOS reset i benchmarked my CPU  and in my surprise and awe it tested higher than before, although my RAM was running on 2133Mhz instead of 2933 that's usually running. My first guess was that it had something to do with the lower latency or lower voltage of RAM. After ruling that out my second guess was Dr debug and that was it .

Dr debug CPU temp monitoring taxes CPU the whooping amount of 3% alot more than any OS software would have .

MB: Fatal1ty X370 Gaming X
CPU: Ryzen 5 1600

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HaveNoName Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 26 Dec 2017 Status: Offline Points: 17	Post Options Post Reply Quote HaveNoName Report Post Thanks(0) Quote Reply Topic: Dr debug CPU temp monitoring is not what you think Posted: 15 Jan 2018 at 3:54pm
	No reason not to be excited with Dr debug feature to allow check on cpu temp in all times without the need of a 3rd party software that would consume system resources right ? Wrong ! How did i find out : After a CMOS reset i benchmarked my CPU and in my surprise and awe it tested higher than before, although my RAM was running on 2133Mhz instead of 2933 that's usually running. My first guess was that it had something to do with the lower latency or lower voltage of RAM. After ruling that out my second guess was Dr debug and that was it . Dr debug CPU temp monitoring taxes CPU the whooping amount of 3% alot more than any OS software would have . MB: Fatal1ty X370 Gaming X CPU: Ryzen 5 1600

MisterJ Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Apr 2017 Status: Offline Points: 1097	Post Options Post Reply Quote MisterJ Report Post Thanks(0) Quote Reply Posted: 16 Jan 2018 at 12:26am
	HaveNoName, please tell us how you came to this conclusion? Thanks and enjoy, John.
	Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD

zlobster Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 02 Sep 2017 Status: Offline Points: 403	Post Options Post Reply Quote zlobster Report Post Thanks(0) Quote Reply Posted: 16 Jan 2018 at 12:27am
	I always thought Dr.Debug was the on-board diagnostic LED! Is OP referring to some piece of software?
	1700X ZP-B1 (stock); X370 Taichi (UEFI 3.10); 16GB F4-3200C14-8GFX XMP; 256GB 960 EVO; RX 580 NITRO+ 8GB

HaveNoName Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 26 Dec 2017 Status: Offline Points: 17	Post Options Post Reply Quote HaveNoName Report Post Thanks(0) Quote Reply Posted: 16 Jan 2018 at 6:49am
	I'm aware that it's a on-board diagnostic LED. Also i am aware it should not tax CPU at all. However benchmark is clear it does makes CPU 3% slower. You can test it on your system maybe you'll get the same results . Personally I'm not surprised at all considered how bugged my MB is. For example BIOS shouldn't consume any CPU power also right ? But judging by the CPU temp while I'm on BIOS it works nearly on 100%. Aside of the bugs tho my MB is great and my system rocks .

zlobster Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 02 Sep 2017 Status: Offline Points: 403	Post Options Post Reply Quote zlobster Report Post Thanks(0) Quote Reply Posted: 16 Jan 2018 at 4:55pm
	Honestly, I never knew that I can make Dr. Debug show my temps.
	1700X ZP-B1 (stock); X370 Taichi (UEFI 3.10); 16GB F4-3200C14-8GFX XMP; 256GB 960 EVO; RX 580 NITRO+ 8GB

jmmec Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Nov 2017 Status: Offline Points: 21	Post Options Post Reply Quote jmmec Report Post Thanks(0) Quote Reply Posted: 17 Jan 2018 at 10:17am
	Wow, surprised, but you're correct. I have an X399 Taichi (not overclocked except for RAM at 2933) and had Dr. Debug temperature display enabled. I get a 2.6% performance degradation in Cinebench if UEFI is configured to display temperature in Dr. Debug. I didn't test other benchmarks. I set it back to "Disabled" since I really don't need the temperature display.

zlobster Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 02 Sep 2017 Status: Offline Points: 403	Post Options Post Reply Quote zlobster Report Post Thanks(0) Quote Reply Posted: 17 Jan 2018 at 6:45pm
	How do you enable it in first place? Is it some UEFI setting? Some utility?
	1700X ZP-B1 (stock); X370 Taichi (UEFI 3.10); 16GB F4-3200C14-8GFX XMP; 256GB 960 EVO; RX 580 NITRO+ 8GB

NorySS Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 03 Feb 2018 Status: Offline Points: 12	Post Options Post Reply Quote NorySS Report Post Thanks(0) Quote Reply Posted: 04 Feb 2018 at 4:02am
	Its under Advance/ South Bridge /On board Debug display

orionbg Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Feb 2018 Location: Bulgaria Status: Offline Points: 16	Post Options Post Reply Quote orionbg Report Post Thanks(0) Quote Reply Posted: 05 Feb 2018 at 1:04pm
	That's very interesting... I'll test it later today for sure.
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orionbg Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Feb 2018 Location: Bulgaria Status: Offline Points: 16	Post Options Post Reply Quote orionbg Report Post Thanks(0) Quote Reply Posted: 06 Feb 2018 at 2:10am
	I've tested this and can confirm that at least in CB15, there is about 50 points difference...
	Asrock X399 Taichi, AMD Threadripper 1950X, 32GB G.SKILL TridentZ RGB 3200MHz, 256GB Samsung PM961 nvme, 512GB Samcung 850 EVO, 512GB Intel 5400S, GTX1080Ti FE, Lian-Li PC-O11WGX case, Custom W.Loop