shahaan
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@unclewebb Thank you for this suggestion. I repasted with Thermal Grizzly Kryonaut (just had it on hand at the time) and the thermal throttling problem has vanished. (Very disappointing that a brand new mobile workstation needs a repaste within 2 months of use.)
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Yeah that could be. I'll consider a re-paste when I have some more time on my hands.
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It's on a flat wooden desk and the back in raised up a few centimeters by a wedge-shaped USB-C dock but it has been in that position since day one. It's brand new. The thing with the i9-12950 you're talking about is a higher spec model with vapor chamber cooling, so yeah those 70s temps are expected. My model has heat pipes and the 89C I saw OOTB is as expected. LOL well I *am* in a hot climate area, but I've thankfully got AC so it's not that hot indoors.
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Yeah sorry I should've mentioned that I'm using hwinfo to see the temps and throttling. It shows thermal throttling on a few of the p-cores.
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I got a ZBook Fury 16 G9 with an i7-12800HX which I've been using daily for the past 2 months. It performs well and I've been quite happy with it. Running Cinebench R23 on it when I first got it 2 months ago, I was happy to see that the CPU would not get hot enough to throttle, staying at a maximum 89C. I would get scores in the 16k range. Recently however it has mysteriously started exceeding that temp and routinely hitting 96-100C, with throttling reducing performance. Now I'm seeing scores in the 14k range. I haven't made any software or hardware changes. The fans pretty much are as clean as they were when I got it. In the mean time, I've had to resort to using ThrottleStop to set lower power limits in order to keep temps down, since the CPU cannot be undervolted. Anyone have any ideas about what might be going on? Any help is appreciated!
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Help, I need somebody, Help, not just anybody…
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TL;DR I want to set CPU voltage as low as possible while maintaining the default/stock performance of the CPU, but idle voltage seems higher than it should be. Hey folks, I need a little help wrapping my head around CPU voltages and setting the desired voltage in BIOS. The hardware is an AMD Ryzen 5 PRO 4650G (3.7Ghz base, 4.2Ghz boost, 65W TDP) on an Asus TUF Gaming B550M-Plus. From HWiNFO64: Core VIDs CPU Core Voltage (SVI2 TFN) CPU Core VID (Effective) HWiNFO64 tool tips on each of the above readouts: Core VIDs: "Voltage requested by particular core, not the voltage really supplied by voltage regulator." CPU Core Voltage (SVI2 TFN): "Voltage of the core domain (VDDCR_CPU) provided via Voltage Regulator telemetry (SVI2 TFN)." CPU Core VID (Effective): "Effective voltage requested. This is the voltage among all core VID voltages requested chosen as the final request to the VR." BIOS settings: VDDCR CPU Voltage: Offset Mode VDDCR CPU Offset Voltage: -0.13750 VDDCR CPU Load Line Calibration: Level 2 If I understand the HWiNFO readouts correctly, the SVI2 TFN readings are "actual/real" CPU voltages. What I don't understand is why the idle voltage is sitting so high (1.319 V) when I've set a sizeable negative offset. Any help will be greatly appreciated! Thanks!
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shahaan changed their profile photo -
Normal office stuff: Web browsing (Firefox), emails (Thunderbird), spreadsheets (Excel), PDFs (Adobe Reader).
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I'm seeing strange readings from HWINFO64 for my CPU. Under routine workloads I see intermittent/brief temp spikes up to the 90s. These last less than a second. However, under Prime95 torture test the CPU barely hits the 70s. I thought maybe it's a software glitch so I tried monitoring the temps using another program but I see the same strange temp spikes. Could it be a sensor malfunction? ROUTINE WORKLOADS: PRIME95 TORTURE TEST:
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Yep, something unknown is limiting it to 28W because BIOS power limit is 30W. Thanks for your help.
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Yes, I did this.
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Not from what I have observed in other similar CPUs. Based on the 30W PL1 and 50W PL2 settings in BIOS, it should be initially drawing up to 50W (or whatever it can, depending on thermal capacity of the cooling solution) and after that short period drop down to 30W. Instead, it never exceeds 28W.
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BIOS settings are exactly the same (default). Actual problem is that the CPU should be pulling up to 30W for long duration power limit and up to 50W for short duration. But instead, it caps at ~27.997W instantly showing "power limit exceeded" in HWINFO64. Here's a review that says "Our custom stress test manages to sustain a 30W package power..." https://www.anandtech.com/show/14164/intel-nuc8i7beh-bean-canyon-nuc-review-ticking-the-right-boxes/11
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Background Hardware: NUC8i7BEH with i7-8559U (advertised TDP 28W) BIOS: PL1 (long) = 30W, PL2 (short) = 50W Note: BIOS PL1, PL2 confirmed using HWINFO64 Problem I see online reviews for the NUC8i7BEH showing TDP going higher than 28W. But while running benchmarks like Cinebench, Prime95, the CPU TDP on my unit never exceeds 28W. It always maxes out at 27.977 or similar. So what's going on here? Any help will be very much appreciated. Even a suggestion/direction to investigate further will be great. Online searches have turned up nothing so far. Thank you!!
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So from what I can tell, the thermal throttling is not due to insufficient heat transfer from processor to heat sink fan (HSF) assembly. Therefore, no amount of re-pasting is going to solve this problem. The real problem with thermal throttling on this laptop is that the HSF cannot dissipate the amount of heat generated by the CPU under full load. I power limited (45000mW PL1 (short) and 35000mW PL2 (long) in BIOS) my CPU to the TDP advertised by Intel for the i7-8750H which is 45W and 35W (TDP-down). The default setting by MSI was a whopping 90W or something which is absolutely bonkers for the HSF in this laptop. The i7-8750H thermal throttles around 55W (hitting 95-97C) or so and that is with the fans blasting full speed. For comparison, I have a desktop with an i9-9900 (5Ghz boost) and the desktop-sized HSF can dissipate enough heat to allow that CPU to run for an extended time at 125W (unlocked in BIOS up from the Intel advertised 65W TDP) but the fan spins up audibly loud and the CPU reaches 60C. I wouldn't waste my time re-re-repasting, TBH. Unfortunately I've accepted the reality that the HSF in the MSI laptop is insufficient to dissipate the amount of heat generated by the CPU anywhere beyond 45W and sometimes it even thermal throttles at that power limit. In the end, I decided to sell my MSI GS65 8RE. Haven't found a buyer yet but fingers crossed. Wish you better luck, friend.
