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Maximum voltage i7 7700k

Nervoize
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Hello!

 

I have an overclocked i7 7700k running at 5.1Ghz at 1.36v. But what is the maximum voltage for a chip like this? When i ask people, i get answers from 1.3v to 1.5v for daily use (but i just need to make sure i won't kill this chip by pulling too much voltage through it, just to run that 100mhz faster) My cooling solution is superb, as you can check out my (ghetto) rig down below. (Currently finishing it)

https://www.overclock.net/forum/rigbuilder.php?do=rig&action=view&rigid=6849864

 

Under gaming load, the CPU hits about 40-50c. While stresstesting, the CPU hits about 45-60c. This gives me plenty of heatroom, while still having a quiet PC. (fans running at 40%)

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https://linustechtips.com/topic/972502-maximum-voltage-i7-7700k/
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There is no clear line that says "do not cross" on a CPU.

That's why people recommend a range.

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5 minutes ago, Enderman said:

There is no clear line that says "do not cross" on a CPU.

That's why people recommend a range.

Yeah, i figured that out as well. But maybe i need to be more specific; 24/7 use under a fair amount of load during that time, without losing much of it's lifespan. I mean, i don't mind pulling 1.5v through the CPU, as long as it does not affect the lifespan too much.

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2 minutes ago, Nervoize said:

Yeah, i figured that out as well. But maybe i need to be more specific; 24/7 use under a fair amount of load during that time, without losing much of it's lifespan. I mean, i don't mind pulling 1.5v through the CPU, as long as it does not affect the lifespan too much.

There is no concrete data or test that has any statistically significant result.

If you're concerned about lifespan stick closer to 1.3, if you want to take more risks then go to 1.4-1.5 if your cooling allows.

NEW PC build: Blank Heaven   minimalist white and black PC     Old S340 build log "White Heaven"        The "LIGHTCANON" flashlight build log        Project AntiRoll (prototype)        Custom speaker project

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Ryzen 3950X | AMD Vega Frontier Edition | ASUS X570 Pro WS | Corsair Vengeance LPX 64GB | NZXT H500 | Seasonic Prime Fanless TX-700 | Custom loop | Coolermaster SK630 White | Logitech MX Master 2S | Samsung 980 Pro 1TB + 970 Pro 512GB | Samsung 58" 4k TV | Scarlett 2i4 | 2x AT2020

 

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Just now, Enderman said:

There is no concrete data or test that has any statistically significant result.

If you're concerned about lifespan stick closer to 1.3, if you want to take more risks then go to 1.4-1.5 if your cooling allows.

Haha alright, well 1.3v is just a bit above the stock voltage so i don't really want to stick to that voltage.

 

My cooling will for sure allow me to pull 1.5v or higher through the CPU, so that's not my biggest concern.

 

Do other people have an opinion about the voltage? Let me know!

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how long do you want the CPU to work? What kind of cooling you have?

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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1 hour ago, Jurrunio said:

how long do you want the CPU to work? What kind of cooling you have?

I want an expected lifetime of at least 3-4 years (with the intention to re-sell it for a low price). My cooling can be found here: https://www.overclock.net/forum/rigbuilder.php?do=rig&action=view&rigid=6849864

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2 hours ago, Nervoize said:

I want an expected lifetime of at least 3-4 years (with the intention to re-sell it for a low price). My cooling can be found here: https://www.overclock.net/forum/rigbuilder.php?do=rig&action=view&rigid=6849864

a custom loop with 360mm radiator? Then you can try 1.45V, but be careful with the 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: 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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2 hours ago, Jurrunio said:

a custom loop with 360mm radiator? Then you can try 1.45V, but be careful with the temperature.

Temperatures are no issue, but i don't think there is a lot room left for a decent increase of mhz. At 1.408v and 5.2Ghz the CPU crashes after about 15 minutes, and the temperatures are max 60-65c. To hit 5.2Ghz, i might have to push all the way up to 1.45v or higher, which is not worth that 100mhz for daily use. Might go as far as i can for just benchmarking, but nothing else than that.

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5 minutes ago, Nervoize said:

Temperatures are no issue, but i don't think there is a lot room left for a decent increase of mhz. At 1.408v and 5.2Ghz the CPU crashes after about 15 minutes, and the temperatures are max 60-65c. To hit 5.2Ghz, i might have to push all the way up to 1.45v or higher, which is not worth that 100mhz for daily use. Might go as far as i can for just benchmarking, but nothing else than that.

that's what happens at the end of the voltage/frequency curve, you start shoving a lot more voltage just for a small frequency bump

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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On 16-9-2018 at 7:42 PM, Jurrunio said:

that's what happens at the end of the voltage/frequency curve, you start shoving a lot more voltage just for a small frequency bump

 

Yeah, i just stick to the 5.1Ghz 1.36v for daily use. Maybe for benching i’ll go higher than 1.4v but not worth for a 100Mhz increase in daily use.

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