8700k remains stable at 5GHz and 1.275v using the H115i cooler. Continue reducing voltage?
8700k remains stable at 5GHz and 1.275v using the H115i cooler. Continue reducing voltage?
Hi all, I'm just starting out with CPU overclocking. I'm using an 8700k with a Corsair H115i cooler.
I began at 5GHz and 1.35v, but temperatures were nearing 100 degrees under load.
I then tried 1.3v, then 1.275v, and it still seems stable.
At 1.275v and 5GHz, I managed to run a RealBench 2.56 stress test with 16GB RAM for four hours without exceeding 90 degrees or showing instability.
Looking through the forums, this result looks promising for this CPU.
Should I keep pushing the voltage lower, or am I good enough? I think if I stick with the lowest voltage that passes RealBench, it might not be sufficient for everyday use. And a maximum of 90 degrees seems acceptable, right?
You may reduce the setting further if needed or if experiencing heat problems.
Indeed, you could crash during other tasks. Mine failed under Prime95 + AIDA64 (12 hours each), shutting down while running.
Max 90c is intended for stress testing.
80c is the limit for regular use.
Zebarjadi.raouf:
Also, have you turned on the LLC (Load Line Calibration)? It can assist in reducing voltage by avoiding voltage drop. Starting at 4/50% seems like a solid approach. I'll give it a shot, thank you!
4Ryan6 :
@Amin Sabet
Amin, it would help if you listed your full specs.
Here are my full specs:
Case: Fractal Define R6
CPU cooler: Corsair H115i Pro
Power supply: Corsair HX850i
OS: Windows 10 Pro 64-bit
CPU: i7-8700k
Boot drive: Samsung 970 Evo 1TB NVMe M.2 SSD
RAM: G.Skill Ripjaws V 32GB 2 x 16GB DDR4-3200
Motherboard: ASUS ROG STRIX Z370-E
GPU: NVIDIA GeForce GTX 1070 Founders Edition
Thermal compound: Arctic Silver 5
And here are my BIOS settings changes:
AI Overclock Tuner: Manual
ASUS MultiCore Enhancement: Disabled
AVX Instruction Core Ratio Negative Offset: 2
CPU Core Ratio [Per Core]: Sync All Cores
1-6 Core Ratio Limit: 50
CPU SVID Support: Disabled
CPU Core/Cache Current Limit Max: 255.50
BCLK Aware Adaptive Voltage: Disabled
CPU Core/Cache Voltage: Manual Mode
CPU Core Voltage Override: 1.275
CPU Load-line Calibration: Level 6
Intel SpeedStep: Disabled
DRAM Voltage: 1.3530
DRAM Frequency: DDR4-3200MHz
DRAM CAS# Latency: 16
DRAM RAS# to CAS# Delay: 18
DRAM RAS# ACT Time: 38
DRAM Command Rate: 1N
System seems very stable in both stress tests and regular use
.
Nice build.
😉
For a week, if nothing occurs, consider reducing the voltage. It seems sufficient in my view. Many achieve 5GHz with 1.30v to 1.35v.
zebarjadi.raouf :
Nice build.
😉
Thanks!
zebarjadi.raouf :
Try it for a week; if nothing changes, consider reducing the voltage. It seems reasonable. Many people achieve 5GHz with 1.30v to 1.35v.
Looks like a solid approach. Appreciate the advice!
That is simply a great CPU, mine just couldn't get anywhere near that at 5GHz...I get 4.9 at 1.27v but 5GHz just needs way too much..be happy!