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What do these voltages do & what is the best setting for each?

Jul 23, 2008
473 (0.12/day)
South Africa
Processor Intel Core i7 4770K @ 4.4Ghz
Motherboard Asus Z87 Deluxe
Cooling Corsair H100i CPU Cooler, 4x 200mm, 1x 140mm, 1x 120mm
Memory 16GB Corsair Dominator Platinum DDR-3 1600
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Audio Device(s) Asus Xonar STX to Klipsch SB-3 & Sennheiser HD650 Headphones
Power Supply Antec Signature Series 850W PSU
Mouse Razer Naga Epic
Keyboard Corsair K70 RGB
Software Windows 7 Professional 64 bit
I'm overclocking, but I want to know the best settings for each value.

CPU PLL Voltage?
FSB Termination Voltage?
DRAM Voltage?
NB Voltage?
Apr 14, 2008
3,338 (0.85/day)
Brooklyn, New York 11223
System Name Mine | Dad + Mom
Processor E8500 E0 Wolfdale @ 4.6GHz 1.5V | E2180 M0 Allendale @ 3.0GHz 1.3V
Motherboard Asus Maximus Formula (X48) w/ Rampage BIOS | Asus P5Q Pro (P45)
Cooling Xigmatek Rifle HDT-S1283 w/ SFF21F Fan | Arctic Cooling Freezer 7 Pro
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Video Card(s) Sapphire 4870X2 2GB 820/1020MHz | Sapphire 4850 1GB 700/1100MHz
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Power Supply PC Power and Cooling 750W Non-Modular | Corsair HX-520W Modular
Software Windows Vista Home Premium X64 | Windows Vista Home Premium X64
Benchmark Scores Not Wasting Time!
Well if it's stable then u shouldn't mess with the voltages since it just makes u use more electricity.
Mar 29, 2007
4,834 (1.12/day)
System Name The Cube
Processor Ryzen 5 1600
Motherboard Asus Prime B350M-A/CSM AM4 mATX
Cooling Stock Wraith Spire
Memory 2x8gb Crucial Ballistix Sport LT DDR4-2400
Video Card(s) EVGA GTX 760
Storage 256 GB Samsung Evo 850, 1TB WD Blue
Display(s) ASUS PB278Q 27" 1440p LED
Case Thermaltake Core V21
Power Supply EVGA Supernova 550W
Software Win 10 Education
I'm overclocking, but I want to know the best settings for each value.

CPU PLL Voltage?
FSB Termination Voltage?
DRAM Voltage?
NB Voltage?
Not exactly sure on the first two, I don't have those on any board I've used (haven't used asus :laugh:). I believe they are both related to FSB and if you crank up the fsb you may need to raise them accordingly. I would do a little more digging, I found stuff pretty quickly on them, just search specifics for tips w/ your hardware.

DRAM is your memory voltage. You need to find out what your ram is rated for (I'm guessing 1.8v-2.2v) and don't go over that, but again, when you raise the memory speed, you may need to raise this to get it work. And NB is your northbridge chipset on your mb (the one that interfaces the cpu w/ the rest of the system). You generally only need to mess w/ that if using very high fsb's (high can be different depending on the board).

In my ventures I've only needed to up the cpu and dram voltage, those are really the main ones when oc'ing. Every chip and board is different though so you'll need to play around w/ things a bit, just make sure you find the limits of each before experimenting, and always use slow increments.
Jul 28, 2008
2,560 (0.67/day)
System Name Desktop | Poweredge r410
Processor i5 6500 4.5GHz@1.275V | 2 x E5620 @2.4GHz
Motherboard ASRock Fatal1ty Gaming | Intel 5500
Memory 16GB DDR4 2400MHz | 32GB ECC DDR3
Video Card(s) RX480 8GB |On-Board
Storage 250GB SSD + 512GB SSD|4x320GB
Display(s) 27" Dell + 2 x 24" LCD Setup
Case Fractal Design Define Nano S
Software Windows 10 | Server 2012 r2
What is best for me does not means that will be best for you anyway.
CPU PLL Voltage?
FSB Termination Voltage 1.45V ( high safe boder it will allow more FSB overclocking to the CPU)
DRAM Voltage 2.2V ( most of performance memory are around this voltage and it is safe voltage for DDR II )
NB Voltage 1.45V It will help in overclocking and general stability especialy with 4 sticks setups.