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Save Power i5 3550 - NAS

MonteToast
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Go to solution Solved by Jurrunio,

I assume you use the i5 because you already have one?

 

1. Disable cores. 2 cores is enough, dont need the other 2.

 

2. Undervolt the CPU. Better do this while you still have Windows, since you would want to use stress test tools there. Make sure you raise the final stable voltage by 0.1V before using it in the NAS machine, it will be annoying as hell if it crashed after being a NAS.

 

3. Use offset voltage rather than manual voltage. This allows the CPU to run on much lower voltages while sitting at idle.

Posted

Hello nice people out there,

 

i've build myself a freenas with stuff i had laying around and bought a 4tb for now.

Since im living in germany electricity is fu** expansive. ( 0.30€/0.36$ =  1 kwh) 

Now i'm thinking how to save power on this machine. A i5 3550 + some mobo, 8G+2G Ram ,4tb iron wolf is in there right now, but

im adding a couple drives in a month or so and changing the OS to unRaid.

I was thinking to disable some cores and/or underclock/undervolt the i5 3550.

 

 

 

TL:DR: How to save power on this system(NAS): i5 3550, 8G+2G RAM, 5 HDD

 

 

 

 

Thank you guys.

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What makes you think you need an i5? If the system is just for storage, you'll be fine with a Celeron or Pentium, and those have ultra low power T variants. Just swap out the CPU for a lower power unit :) 

PC Specs - AMD Ryzen 7 5800X3D - MSI B550M Mortar - 32GB Corsair Vengeance RGB DDR4-3600 @ CL16 - ASRock RX7800XT - 660p 1TBGB & Crucial P5 1TB - Fractal Define Mini C - CM V750v2 - Windows 11 Pro

 

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i dont need an i5, but i have on hand, from an old machine

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  • Solution

I assume you use the i5 because you already have one?

 

1. Disable cores. 2 cores is enough, dont need the other 2.

 

2. Undervolt the CPU. Better do this while you still have Windows, since you would want to use stress test tools there. Make sure you raise the final stable voltage by 0.1V before using it in the NAS machine, it will be annoying as hell if it crashed after being a NAS.

 

3. Use offset voltage rather than manual voltage. This allows the CPU to run on much lower voltages while sitting at idle.

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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