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Intel Core i5 8600k OC help

BlvckBacardi
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Hello everyone, I have this setup for about 9 months (it was brand new, no used parts) running on optimized cpu oc settings at 4.6ghz. Mobo is Asrock z370 pro4 and Coolermaster Masterliquid 240 is keeping it cool, kinda. I have never overclocked cpu before. After lots of tutorials and readings about cpu configuration settings, 5ghz was easy by letting mobo decide the voltage part, but it got pretty hot. Throttling at 93 celsius. I really don't want to mess with voltage part on my own, any advices how high can I go? Should I use offset or fixed voltage, LLC? Everything else related to voltage I barely understand. ? I would appreciate any help, thanks!  

 

 

 

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3 minutes ago, BlvckBacardi said:

I really don't want to mess with voltage part on my own, any advices how high can I go?

1.4V, which is what many motherboards go past on auto. You really shouldnt auto mode all the way.

 

3 minutes ago, BlvckBacardi said:

Should I use offset or fixed voltage, LLC? Everything else related to voltage I barely understand. ? I would appreciate any help, thanks!  

fixed voltage is easier to handle. LLC to the middle level (say BIOS has level 1 to 5, use 3).

 

But the most important thing is to monitor CPU core voltage (Vcore) under use in Windows. I recommend HWmonitor for the inexperienced, but you should move to HWinfo's sensor mode once you get along with things.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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5 minutes ago, Jurrunio said:

fixed voltage is easier to handle. LLC to the middle level (say BIOS has level 1 to 5, use 3).

If i set fixed voltage to 1.350v and llc to level 3, what it actually does to cpu voltage under heavy load?

 

Right now clock is 4.6ghz optimized overclock, everything is pre set by mobo? and voltage is 1.3 in hwinfo sensor mode but all cores are at 58 celsius at idle.

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9 minutes ago, BlvckBacardi said:

If i set fixed voltage to 1.350v and llc to level 3, what it actually does to cpu voltage under heavy load?

1.35V is merely the base of voltage the motherboard will try output. Under load and without LLC (i.e. lowest LLC = largest level number) voltage will drop quite a bit. That's why you need LLC to correct this voltage dip.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Got it working at 5ghz with voltage set at 1.325V in bios and LLC level 2 and i'm completely confused with hwinfo sensor readings. Vcore max - 1.304V, Vcore min - 0.645V and during stress test Vcore max - 1.245V. On top of all this, CPU-Z says Vcore - 1.328V. Is that okay for daily use and could i go above that voltage if i would like to increase clock to 5.1ghz or more? 

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