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Undervolting an FX-8350

LoganValentine
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I have an AMD FX-8350 and I'm thinking about undervolting. I've looked through other forums and seen people say that the stock voltage for an 8350 is high and I like to keep my system cool. My GPU runs at 23C idle but I have the fan curve up because you can't hear it while you game but it goes to about 50-60c under load. My CPU hits around 60-65c on CPU intensive games and I just wanna go that extra step for some cooler speeds, I have an ASRock 970A G/3.1 mobo and my cooler is a corsair h60 feel free to ask any questions. but I want to undervolt and don't know how and I was wondering if anyone knew stable voltages and could help me in undervolting

 

Cooler - https://www.newegg.com/Product/Product.aspx?Item=N82E16835181030

Mobo - https://www.amazon.com/ASRock-970A-G-Socket-CrossFireX-Motherboard/dp/B01AIZXZHQ/ref=sr_1_2?s=pc&ie=UTF8&qid=1519603118&sr=1-2&keywords=motherboard+am3%2B&refinements=p_n_feature_seven_browse-bin%3A5657494011%2Cp_n_feature_six_browse-bin%3A2057506011

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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Not sure if I see any questions in there.

 

Get into the BIOS, and set the voltage from 'auto' to 'offset', then enter a negative value. Try -0.05 first, then decrease it to -0.1, -0.15. etc until it crashes in full-on synthetics like Prime95 (use the first two) for 5 mins. Then increase the voltage by 0.01, until it's fine again. Add another 0.05V to the offset, and it's done.

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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3 minutes ago, Jurrunio said:

Not sure if I see any questions in there.

I fixed it I swear I'm dumb but I need help undervolting and finding a safe voltage for my 8350 that is stable.

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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2 minutes ago, LoganValentine said:

I fixed it I swear I'm dumb but I need help undervolting and finding a safe voltage for my 8350 that is stable.

also a 1 fan radiator is a little small for a chip of that heat production you should get a double or triple rad

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1 minute ago, LoganValentine said:

I fixed it I swear I'm dumb but I need help undervolting and finding a safe voltage for my 8350 that is stable.

I think I can help you out. I have overclocked an 8370E on a very similar motherboard (970 Fatality Performance), undervolted a 9370, and undervolted and underclocked a 9590 ;) 

I don't remember all the ASRock settings from the top of my head, but I can get intt that system's BIOS to check things as needed

 

16 minutes ago, LoganValentine said:

 I've looked through other forums and seen people say that the stock voltage for an 8350 is high

Most likely. It depends on how lucky you got with your CPU, but I expect there will be room for it :) 

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3 minutes ago, LoganValentine said:

I fixed it I swear I'm dumb but I need help undervolting and finding a safe voltage for my 8350 that is stable.

I edited the old post of mine as well

 

Just now, Captinjigglesworth said:

also a 1 fan radiator is a little small for a chip of that heat production you should get a double or triple rad

FX isnt that hot when not pushed hard.

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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Just now, Captinjigglesworth said:

also a 1 fan radiator is a little small for a chip of that heat production you should get a double or triple rad

That was gonna be my next upgrade along with a case

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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Just now, Captinjigglesworth said:

also a 1 fan radiator is a little small for a chip of that heat production you should get a double or triple rad

No, not at stock and if he plans to undervolt. A thick 120 would be plenty. The H60 is on the slim side, but it'll work for this use case.

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9 minutes ago, Jurrunio said:

Not sure if I see any questions in there.

 

Get into the BIOS, and set the voltage from 'auto' to 'offset', then enter a negative value. Try -0.05 first, then decrease it to -0.1, -0.15. etc until it crashes in full-on synthetics like Prime95 (use the first two) for 5 mins. Then increase the voltage by 0.01, until it's fine again. Add another 0.05V to the offset, and it's done.

i'll try that thanks

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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2 minutes ago, LoganValentine said:

i'll try that thanks

I ran prime 95 and it closed and these are the files in it

https://imgur.com/a/7wyuY5L

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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2 minutes ago, LoganValentine said:

I ran prime 95 and it closed and these are the files in it

https://imgur.com/a/7wyuY5L

did a window pop up and ask you to run a torture test?

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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3 minutes ago, Jurrunio said:

did a window pop up and ask you to run a torture test?

no, it just instantly closes. did I download the right one?

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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3 minutes ago, LoganValentine said:

no, it just instantly closes. did I download the right one?

I got it here

https://www.mersenne.org/download/

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 minute ago, Jurrunio said:

I got it here

https://www.mersenne.org/download/

I did also i downloaded "Windows Service: 64-bit"

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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Just now, LoganValentine said:

I did also i downloaded "Windows Service: 64-bit"

i downloaded the top one and got alot more files

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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Just now, LoganValentine said:

i downloaded the top one and got alot more files

then start the .exe

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 minutes ago, LoganValentine said:

I did also i downloaded "Windows Service: 64-bit"

https://imgur.com/a/BnbKTNU

what should i do now to setup for undervolting

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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3 minutes ago, LoganValentine said:

https://imgur.com/a/BnbKTNU

what should i do now to setup for undervolting

have you lowered the voltage offset yet? If you did, run both small FFT and large FFT, each for about a minute.

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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12 hours ago, Jurrunio said:

have you lowered the voltage offset yet? If you did, run both small FFT and large FFT, each for about a minute.

Yeah I lowered the voltage from 1.3125 to 1.2615 and I ran the tests and it seems to run fine. I'll lower it by another 0.05 when I get home until it becomes unstable then go up by 0.05 and keep going down by 0.01.

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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8 hours ago, LoganValentine said:

Yeah I lowered the voltage from 1.3125 to 1.2615 and I ran the tests and it seems to run fine. I'll lower it by another 0.05 when I get home until it becomes unstable then go up by 0.05 and keep going down by 0.01.

I lowered it again and this is the results file but when I do the stress test it doesn't use 100% of the CPU

https://imgur.com/a/stwaSvz

CPU - FX-8320 4.0ghz | Mobo - ASRock 970A-G/3.1 | RAM - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory | GPU - RX460 WINDFORCE OC 4G | PSU - Corsair CX600 | Case - Masterbox lite 5 RGB |

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