Overclock I7 8700k 4.7GHZ@1.185 is stable?

danieltellezp

Prominent
Nov 21, 2017
3
0
510
Hi, I overclocked my i7 8700k to 4.7ghz in the 6 cores with a vcore voltage in 1.185. I passed the stress test (Intel Extreme Tuning Utility) for an hour and the max temps are 66°. I need to do something more? This overclock is stable?

My build is this:

PCPartPicker part list: https://pcpartpicker.com/list/kYycWX
Price breakdown by merchant: https://pcpartpicker.com/list/kYycWX/by_merchant/

CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor ($414.89 @ B&H)
CPU Cooler: ARCTIC - Freezer 33 eSports Edition (Black/Red) CPU Cooler ($49.99 @ Newegg)
Motherboard: MSI - Z370 KRAIT GAMING ATX LGA1151 Motherboard ($139.99 @ Amazon)
Memory: Corsair - Vengeance RGB 16GB (2 x 8GB) DDR4-3600 Memory ($239.99 @ Corsair)
Storage: Samsung - 960 EVO 500GB M.2-2280 Solid State Drive ($243.57 @ B&H)
Video Card: Gigabyte - GeForce GTX 1080 8GB WINDFORCE OC 8G Video Card ($499.99 @ Newegg)
Case: NZXT - H440 (Matte Black/Red) ATX Mid Tower Case ($99.99 @ Amazon)
Power Supply: SeaSonic - FOCUS Plus Gold 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($89.49 @ SuperBiiz)
Case Fan: Corsair - Air Series AF140 Red 66.4 CFM 140mm Fan ($13.19 @ OutletPC)
Total: $1791.09
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-23 14:27 EST-0500
 
Solution
Most new versions of Prime95 use AVX instruction set that will place an unrealistic load on the CPU causing much higher temps. If you have sufficient cooling this might not be a problem. Some motherboards have presets that adjust clock speeds lower when using AVX. But most recommend Prime95 v26.6 because it does not use AVX instruction.


danieltellezp

Prominent
Nov 21, 2017
3
0
510


Hi, thx for your reply.

How long should I run it?
Which version of Prime95 I should use?
 
Most new versions of Prime95 use AVX instruction set that will place an unrealistic load on the CPU causing much higher temps. If you have sufficient cooling this might not be a problem. Some motherboards have presets that adjust clock speeds lower when using AVX. But most recommend Prime95 v26.6 because it does not use AVX instruction.


 
Solution