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i5 8600K owers under stress

MouseProblems11
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When using using prime95 under small FFT's (maximum heat, data fits in L2 cache, RAM not tested much), my temperature rises up to 85 degrees Celsius on average and my core speed on the cpu drops. My speed is usually 4.9GHz, but under the stress test it lowers to 3.8GHz. '

I switched to the blend test (tests some of everything, lots of RAM tested) and my core speed stayed 4.9GHz and celsius was lower on average, being around 75c. However the voltage raised from about 1.28 on the small FFT test to about 1.39 on the blend test. 

I have an i5 8600k and the CPU cooler Noctua NH-D14 set to full speed, along with four case fans set to full speed. 

Any suggestions? 

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Delid

Current LTT F@H Rank: 69    Score: 3,457,572,143    Stats

Yes, I have 9 monitors.

My main PC:

OS: Windows 11

CPU: Ryzen 9 3900X w/PBO on

Cooler: Noctua NH-D15

Mobo: Asus X470-F Gaming

RAM: 64GB G-Skill Ripjaws V @ 3200MHz

GPU: RTX 4090 Founders Edition, Radeon Pro WX 5100

PSU: Corsair RM1000e

SSDs: Samsung 970 evo plus 1TB NVME, 2x Samsung 870 evo 2TB, Samsung 860 evo 1TB, Samsung 970 evo 500GB NVME

Case: Fractal Design Define R5 Black w/ Tempered Glass Side Panel Upgrade

Monitors: 9 Monitors: Alienware AW3423DWF 3440x1440@165Hz, Acer H236HLbid 1080p@77Hz, HP D7z72AA 1080p@60Hz, Dell Inspiron 24 3459 1080p@60Hz(used only as display), Dell U2724D 1440p@120Hz, ASUS VP228 1080p@60Hz, 2x HP ZR2440W 1200p@60Hz

 

unRAID server (Plex, Backups, NAS, Duplicati, game servers):

OS: unRAID 6.12.4

CPU: Ryzen R7 2700x @ Stock

Cooler: Noctua NH-U9S

Mobo: Asus Prime X470-Pro

RAM: 16GB G-Skill Ripjaws V + 16GB Hyperx Fury Black @ stock

PSU: EVGA G3 850W

SSD: Samsung 980 Pro 1TB NVME, Samsung 970 evo plus 1TB NVME

HDDs: 4x HGST Dekstar NAS 4TB @ 7200RPM (3 data, 1 parity) + (3x Seagate Ironwolf NAS 8TB + 2x Toshiba N300 NAS 8TB in ZFS)

Case: Fractal Define 7 XL

Other: Added 3x Noctua NF-F12 intake, 2x Noctua NF-A8 exhaust, Inatek 5 port USB 3.0 expansion card with usb 3.0 front panel header

 

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