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Safe Overclock Voltage? (i5 9600k)

TTesla
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Go to solution Solved by Jurrunio,

1.4V's fine if you can keep it below 70C, otherwise it's more like 1.35V (up to 80C). If temperature goes higher than that, you've got a really big problem with your cooling.

I am wondering what's an upper limit for voltage that I should not cross when overclocking a 9600k, in order to preserve long term stability?

 

Previously I was under the impression 1.3v was a good bet, but now I see people routinely do 1.4 or slightly higher. Has something changed?

Of course this is assuming good temperatures (what are good temps, below 80-90?)

Double check everything, I am usually wrong.

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under 1.4

5950x 1.33v 5.05 4.5 88C 195w ll R20 12k ll drp4 ll x570 dark hero ll gskill 4x8gb 3666 14-14-14-32-320-24-2T (zen trfc)  1.45v 45C 1.15v soc ll evga non-3090 tie ftw3 1905 0.8v 65C 270w (double fps of 1080ti) ll samsung 970 500gb nvme os ll sandisk 4tb ssd ll all nf12/14 fans ll tt gt10 case ll evga g2 1300w ll w10 pro ll 34GN850B ll x27 ll PA272w

 

9900k 1.36v 5.1avx 4.9ring 85C 195w (daily) 1.02v 4.3ghz 80w 50C R20 temps score=5500 ll D15 ll Z390 taichi ult 1.60 bios ll gskill 4x8gb 14-14-14-30-280-20 ddr3666  bdie 1.45v 45C 1.22sa/1.18 io  ll EVGA non-30 tie XC 1830//7600 0.85v 210w ll  8x nf12/14 fans 2x samsung 860 evo 500gb raid 0 ll 500gb nvme 970 evo ll Corsair graphite 780T ll EVGA P2 1200w ll Windows 10 Pro ll NEC PA242w (movie, work mon dying) 1080p 60hzll Predator X27 4k144 hdr (using at 4:4:4 98 fan is dying)

 

 

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Around 1.35 or 1.375 is a safe voltage for 5ghz, but it also depends on your cooling

PC: CPU: i5-9600k - CPU Cooler: be quiet! Dark Rock Pro 4 - GPU: Sapphire Radeon RX 5700 XT 8GB GDDR6 - Motherboard: ASRock - Z370 Extreme4 - RAM: Team - T-Force Delta RGB 16 GB DDR4-3000 - PSU: Corsair - TXM Gold 550 W 80+ Gold Certified Semi-Modular ATX Power Supply - Case: Thermaltake - Core G21 TG

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1.4V's fine if you can keep it below 70C, otherwise it's more like 1.35V (up to 80C). If temperature goes higher than that, you've got a really big problem with your cooling.

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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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  • 1 month later...
On 11/27/2018 at 9:30 PM, xg32 said:

under 1.4

 

On 11/27/2018 at 9:54 PM, Jurrunio said:

1.4V's fine if you can keep it below 70C, otherwise it's more like 1.35V (up to 80C). If temperature goes higher than that, you've got a really big problem with your cooling.

 

On 11/27/2018 at 9:42 PM, lmeneses said:

Around 1.35 or 1.375 is a safe voltage for 5ghz, but it also depends on your cooling

Is this BIOS set voltage or actual delivered voltage (as seen in software like CPU-Z)? 

[With the difference being due to LLC]

Also is that temp peak or the average?

Double check everything, I am usually wrong.

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1 hour ago, TeenTesla said:

 

 

Is this BIOS set voltage or actual delivered voltage (as seen in software like CPU-Z)? 

[With the difference being due to LLC]

Also is that temp peak or the average?

actual delivered voltage.

 

peak temp

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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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12 hours ago, Jurrunio said:

actual delivered voltage.

 

peak temp

So I'm running 1.35 delivered, 5 GHz (4.9 for AVX).

 

On old prime 95 small fft (No AVX), I'm staying around ~85 with one core peaking sometimes into 90. 

But on new prime 95 with AVX small fft, that core almost hits TJmax, the rest low 90s. 

 

Both are stable for long periods, and I don't do any AVX workloads, so is this a 'safe' OC?

Clearly I have not lucked out in terms of the silicon for a 9600K.

Double check everything, I am usually wrong.

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2 minutes ago, TeenTesla said:

So I'm running 1.35 delivered, 5 GHz (4.9 for AVX).

 

On old prime 95 small fft (No AVX), I'm staying around ~85 with one core peaking sometimes into 90. 

But on new prime 95 with AVX small fft, that core almost hits TJmax, the rest low 90s. 

 

Both are stable for long periods, and I don't do any AVX workloads, so is this a 'safe' OC?

Clearly I have not lucked out in terms of the silicon for a 9600K.

hot hot hot, weak cooler?

 

if you arent doing AVX stuff, might as well crank up the AVX offset to say, 10 so temps don't shoot up like that.

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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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I'd agree @Jurrunio That's a little warm for a sustained load.  What cooler are you using?  My 6600k has one hot core like yours  I try and keep that under 80

 With all the Trolls, Try Hards, Noobs and Weirdos around here you'd think i'd find SOMEWHERE to fit in!

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6 hours ago, Jurrunio said:

hot hot hot, weak cooler?

 

if you arent doing AVX stuff, might as well crank up the AVX offset to say, 10 so temps don't shoot up like that.

 

 

6 hours ago, YouSirAreADudeSir said:

I'd agree @Jurrunio That's a little warm for a sustained load.  What cooler are you using?  My 6600k has one hot core like yours  I try and keep that under 80

So I initially had a 5 yr old H100i, and it ran those temps for 1.3V and 4.8/4.7 AVX, and was told the cooler is dying. So I replaced it with a NH-D15, put on kryonaut, and got 15C cooler. So I turned up the voltage to OC higher, and here we are.

 

Running both fans, with good aiflow in a meshify c mini. The fan curves have all my fans maxing out at around 75. Getting around 150W TDP for non AVX and 170W for AVX. The NH-D15 is supposed to be rated for like 250W, but I don't know what temp that rating is for. Am I doing something wrong?

Also how does having a higher AVX Offset lower temps?

 

Also also, I disabled 'BCLK Adaptive Voltage', not sure if that helps or hurts or what exactly.

Double check everything, I am usually wrong.

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2 hours ago, TeenTesla said:

So I initially had a 5 yr old H100i, and it ran those temps for 1.3V and 4.8/4.7 AVX, and was told the cooler is dying. So I replaced it with a NH-D15, put on kryonaut, and got 15C cooler. So I turned up the voltage to OC higher, and here we are.

 

Running both fans, with good aiflow in a meshify c mini. The fan curves have all my fans maxing out at around 75. Getting around 150W TDP for non AVX and 170W for AVX. The NH-D15 is supposed to be rated for like 250W, but I don't know what temp that rating is for. Am I doing something wrong?

Also how does having a higher AVX Offset lower temps?

 

Also also, I disabled 'BCLK Adaptive Voltage', not sure if that helps or hurts or what exactly.

the thing about heat dissipation rating is that it doesnt tell what CPU temp is used. For any cooler, rate of heat dissipation is proportional to the temperature difference, so the hotter the CPU, the faster the cooler pulls the heat away. Don't know CPU temps for testing the rating, no idea how well it actually cools.

 

AVX offset basically drops the multiplier by the number of offset when it detects use of AVX. For example a 5.2GHz 9600k on normal conditions with AVX offset of 6 will run 4.6GHz on AVX workload. Less clock means less work done and less temperature.

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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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50 minutes ago, Jurrunio said:

the thing about heat dissipation rating is that it doesnt tell what CPU temp is used. For any cooler, rate of heat dissipation is proportional to the temperature difference, so the hotter the CPU, the faster the cooler pulls the heat away. Don't know CPU temps for testing the rating, no idea how well it actually cools.

 

AVX offset basically drops the multiplier by the number of offset when it detects use of AVX. For example a 5.2GHz 9600k on normal conditions with AVX offset of 6 will run 4.6GHz on AVX workload. Less clock means less work done and less temperature.

I guess I forgot power is a function of both voltage and current, and that increasing the clock would affect current.

What annoys me is that even for prime95 small fft w/ no AVX the clock speed will sometimes dip to the AVX offset speed, like what?

I guess this is the performance I'm getting, and I should just live with it haha

Double check everything, I am usually wrong.

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  • 6 months later...

Okay I have a i5-9600k and using an Asus z-390e (ROG) and im having trouble getting past 4.77 crashing (i know next to nothing about overclocking) does anyone know any good videos to learn the asus bios or any suggestions?

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  • 1 month later...

I'm kinda on the same boat here. Running my 9600k on an Asus strix z390e. Tried using the AI overclocker to see if it's any good but it's setting way to high of a voltage. Were talking 1.45v for 5.2GHz so I dialed it down to 5.0 at 1.35v. does that sound alright? Also 4.7ghz for AVX. I'm running a H115i and still hitting 95/96c when running Intel Burn Test at maximum to rest stability.

20190901_235534.jpg

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Took a photo but I can upload a screenshot of anyone wants to see it.

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  • 3 weeks later...

I cant even get mine past 4.88 and thats at 3.5v again so i cant help and im also looking for help if someone could!

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  • 1 year later...

Old thread but ran into it surfing on all the settings these new BIOS have these days for overclocking. I used to be big into it but stopped at my Rampage 3 1366 M/B years ago. Spent forever looking for the stupid BCLK :) in the below setup only to realize its now gone and we have AVX and NonAVX etc.

I run an I5 9600k on a Corsair H150I and it hits 5.2ghz at 1.39v (52x100). Temps hover around low 70's to high 60's at max load for hours with an avg of 3-5c separation between cores and an idle of 34c with 72 freedom units for room temp. Sits in a Core P1 case (glass TT one) on a Asus Z-390-A m/b. DDR is at 3200mhz 1.35v. I can take it to a 53x100 but thats when its peaks into 70's to mid 80's so leave it at 52x. Asus' DIP 5 program says its AVX stable to 5.648ghz @ 1.415v but not gonna worry with it.

Nothing special done other then chuck it into the socket, artic silver paste, and slapped cooler on. Basically hit the auto 5ghz in bios and here we are. Plan to swap it out to a I9 9900 here in a week or 2 so hopefully get a good chip like the I5.

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