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8700k OC, Prime95, Task manager "Says" 100%, but two cores are at 50%

MrSprint
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So this is driving me nuts, with the cooler temps, i decided to dial my rig back up to 5Ghz (Normally run at 4.8Ghz over the summer), so dialled in a offset of 60 in the Bios, set the Multiplies to 50, and everything else auto

DDR4 is at 3700Mhz (4000Mhz Dims)

Clock Cache thing at 48

whats odd though is that when I run Prime95 FFTs, It maxes all 12 threads, but then very quickly, this happens... 

 

Certain cores seem to back off? Also, If i'm rendering in Adobe and leveraging the iGPU too, I get some funny behaviour where the screen will suffer like a soft crash, and the iGPU will just stop contributing...

 

My suspicion is its perhaps a power issue, but perhaps not the offset, but this is where my knowledge starts to thin :( 

 

Any and all thoughts welcome

 

Motherboard is an ASRock Fatality i6 Gaming on the latest Bios.

Capture3.PNG.abb917ed2c546d7c076f4b65ae0b87a1.PNG

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You may be running into current or other limits. Suggest using hwinfo64 and see what that reports.

TV Gaming system: Asus B560M-A, i7-11700k, Scythe Fuma 2, Corsair Vengeance Pro RGB 3200@2133 4x16GB, MSI 3070 Gaming Trio X, EVGA Supernova G2L 850W, Anidees Ai Crystal, Samsung 980 Pro 2TB, LG OLED55B9PLA 4k120 G-Sync Compatible
Streaming system: Asus X299 TUF mark 2, i9-7920X, Noctua D15, Corsair Vengeance LPX RGB 3000 8x8GB, Gigabyte 2070, Corsair HX1000i, GameMax Abyss, Samsung 970 Evo 500GB, Crucial BX500 1TB, BenQ XL2411 1080p144 + HP LP2475w 1200p60
Gaming laptop: Lenovo Legion, 5800H, DDR4 3200C22 2x8GB, RTX 3070, SK Hynix 512 GB + Crucial P1 TB SSD, 165 Hz IPS 1080p G-Sync Compatible

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ok, so I've downloaded hwinfo64, not used it before, what am i looking for? :)

 

Thanks

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2 minutes ago, MrSprint said:

ok, so I've downloaded hwinfo64, not used it before, what am i looking for? :)

 

Thanks

You need to tag or quote people in order for them to find your reply easier

@porina

Motherboard: MSI BM250-PRO-VD           <-- Build 1    Build 2 -->        Motherboard: ASRock Z370M Pro4                     
CPU: Intel Core i7-7700                                                   CPU: Intel Core i7-8700K
GPU: Gigabyte G1 Gaming GTX 1080                                          GPU: Gigabyte Windforce OC GTX660 (Saving money for RTX 2080)
RAM: 16GB HyperX Fury DDR4 2400Mhz                                        RAM: HyperX Predator 16gb DDR4 3000mhz
PSU: Seasonic M12II EVO 620w Bronze+                                      PSU: Seasonic Focus Gold Plus 650W
CPU Cooler: Gammax 400                                                    CPU Cooler: Gammax 400
SSD: Kingston A400 250GB                                                  HDD/SSD: 3 * 1TB WD blue Kingston A400 250GB 
Headphones: HYPERX CLOUD ALPHA                                                                                               Case: Thermaltake V200 RGB
Monitor: LG 24GM77                                                                                                               Mouse: SteelSeries Rival 600
CaseFans: 3 140mm                                                                                                                Phone: Samsung Galaxy S8+
HDD: 1TB 7200RPM
Mouse: SteelSeries Rival 500
Phone: Nokia 7 plus



hehe yeaaah boy
https://linustechtips.com/main/uploads/monthly_2018_09/111.PNG.5713b4f39cae3a5badac216b30d99e65.PNG

 

You want to code but don't know how ? (Personal list)

 

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1 minute ago, voiha said:

You need to tag or quote people in order for them to find your reply easier

@porina

Sorry, rookie error :)

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11 minutes ago, MrSprint said:

ok, so I've downloaded hwinfo64, not used it before, what am i looking for? :)

On the sensor page, there is a limiting section where it will say yes/no to various things. While it is running, see if any of those are showing as limiting. Note it is normal for some things to show as limiting there when idle.

9 minutes ago, voiha said:

You need to tag or quote people in order for them to find your reply easier

One possible exception, which I used here, is that the person starting the thread usually will have it followed, so it isn't necessarily essential to tag/quote them unless making a specific point.

TV Gaming system: Asus B560M-A, i7-11700k, Scythe Fuma 2, Corsair Vengeance Pro RGB 3200@2133 4x16GB, MSI 3070 Gaming Trio X, EVGA Supernova G2L 850W, Anidees Ai Crystal, Samsung 980 Pro 2TB, LG OLED55B9PLA 4k120 G-Sync Compatible
Streaming system: Asus X299 TUF mark 2, i9-7920X, Noctua D15, Corsair Vengeance LPX RGB 3000 8x8GB, Gigabyte 2070, Corsair HX1000i, GameMax Abyss, Samsung 970 Evo 500GB, Crucial BX500 1TB, BenQ XL2411 1080p144 + HP LP2475w 1200p60
Gaming laptop: Lenovo Legion, 5800H, DDR4 3200C22 2x8GB, RTX 3070, SK Hynix 512 GB + Crucial P1 TB SSD, 165 Hz IPS 1080p G-Sync Compatible

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9 minutes ago, porina said:

On the sensor page, there is a limiting section where it will say yes/no to various things. While it is running, see if any of those are showing as limiting. Note it is normal for some things to show as limiting there when idle.

ok, so I think I'm looking in the right place, but with Prime running, none of these appear to change (assuming this is the right view?) 

Capture4.PNG

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1 hour ago, MrSprint said:

ok, so I think I'm looking in the right place, but with Prime running, none of these appear to change (assuming this is the right view?) 

Scroll further down.

 

There is one more thought, is your system failing Prime95 stress test? Each thread stops running if it encounters and error, but this doesn't explain why the overall CPU still reports 100% if so...

TV Gaming system: Asus B560M-A, i7-11700k, Scythe Fuma 2, Corsair Vengeance Pro RGB 3200@2133 4x16GB, MSI 3070 Gaming Trio X, EVGA Supernova G2L 850W, Anidees Ai Crystal, Samsung 980 Pro 2TB, LG OLED55B9PLA 4k120 G-Sync Compatible
Streaming system: Asus X299 TUF mark 2, i9-7920X, Noctua D15, Corsair Vengeance LPX RGB 3000 8x8GB, Gigabyte 2070, Corsair HX1000i, GameMax Abyss, Samsung 970 Evo 500GB, Crucial BX500 1TB, BenQ XL2411 1080p144 + HP LP2475w 1200p60
Gaming laptop: Lenovo Legion, 5800H, DDR4 3200C22 2x8GB, RTX 3070, SK Hynix 512 GB + Crucial P1 TB SSD, 165 Hz IPS 1080p G-Sync Compatible

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hwinfoex.png.5a6c2e8f81b716890edc7c8ea2c5ce03.png

This is the section I was referring to. Ones near the top "IA" are core related. Turbo limit and turbo attenuation appear normal when running stock settings and not under load. See if any of the others flip under load.

TV Gaming system: Asus B560M-A, i7-11700k, Scythe Fuma 2, Corsair Vengeance Pro RGB 3200@2133 4x16GB, MSI 3070 Gaming Trio X, EVGA Supernova G2L 850W, Anidees Ai Crystal, Samsung 980 Pro 2TB, LG OLED55B9PLA 4k120 G-Sync Compatible
Streaming system: Asus X299 TUF mark 2, i9-7920X, Noctua D15, Corsair Vengeance LPX RGB 3000 8x8GB, Gigabyte 2070, Corsair HX1000i, GameMax Abyss, Samsung 970 Evo 500GB, Crucial BX500 1TB, BenQ XL2411 1080p144 + HP LP2475w 1200p60
Gaming laptop: Lenovo Legion, 5800H, DDR4 3200C22 2x8GB, RTX 3070, SK Hynix 512 GB + Crucial P1 TB SSD, 165 Hz IPS 1080p G-Sync Compatible

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