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Hi,

 

I want to undervolt AMD Ryzen 5 3600X for the sole purpose of reducing it's idle and workload temperatures and keep it running under stock speeds. Is this possible without overclocking?

 

I am using stock cooler and don't want to change it. My motherboard is Gigabyte B450 Aorus Elite, revision 1.0 with latest BIOS. 

 

Thanks. 

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Of course. Plenty of people undervolt their CPUs in laptops to improve cooling, without touching the overclocking settings. I use ThrottleStop to undervolt my CPU, but there are many other tools to do so as well. 

My System: 

AMD Ryzen 5 3600XT • Noctua NH-D15 • MSI MAG B550 Tomahawk • 2x8GB G.skill Trident Z Neo 3600MHz CL16 • MSI VENTUS 3X GeForce RTX 3070 OC •  Samsung 970 Evo 1TB • Samsung 860 Evo 1TB • Cosair iCUE 465X RGB • Corsair RMx 750W (White) • ASUS VG27AQ • Logitech G810 Orion Spectrum • Logitech G502 Hero

 

Got any questions about my system or peripherals? Feel free to tag me (@bellabichon) and I'll be happy to give you my two cents. 

 

PSA: Posting a PCPartPicker list with no explanation isn't helpful for first-time builders :)

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Ofc, voltage and frequency settings are independent of each other (apart from auto settings)

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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@bellabichon I don't want to use tools. I want to undervolt through BIOS only.

 

The problem is clock-stretching in Ryzen CPUs. Normally when there is a quick voltage dip the CPU reduces it's clock speeds for a very brief moment. When you undervolt to the point where CPU no longer gets sufficient voltage on a consistent basis, the clock speeds rapidly fluctuate back and forth due to CPU's 1/10 second polling rate.

 

Because hardware monitoring software cannot catch snapshots at such quick rate, it makes it impossible to detect performance degradation because all you see is boost clock at it's highest and you don't know when you have reached the point of low voltage supply. So you keep decreasing voltage until system becomes unstable.

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