i5-2500k @ 4ghz how low voltage is possible?

Shou Miko · Oct 18, 2012

i am trying to see how low voltage is realistic to go down when my i5-2500k is running 4ghz, normally i do it at 1.150V in bios, but i wanna see if it's possible to go lower than that.

i hit my wall at 1.115V than about max 10mins of Prime95 i get BSOD, but is there anything more than CPU PLL i can actually set to stock instead of auto to ensure of a stable oc at low voltage on my Asus Maximus IV Gene-Z/Gen3.

i would luv any help i can get, bcs lower voltage = lower power bill when my system is on 24-7 ^^;

white phantom · Oct 18, 2012

it all really depends on the specific chip and the board what they are capable of i dont thin kreally anyone can tell you specifically what your personal lowest is as they all difer, you must have a really good chip mines is @4.4ghz and it needs a ridiculous 1.38 to stabilize as for lowest voltage under load

Shou Miko · Oct 18, 2012

white_phantom i think if ur i5-2500k needs 1.38V to do 4,4ghz r u sure the contact between the cooler and IHS good enough or maybe just ur AsRock board that's not good at giving the voltage it should.

before my ECS P67H2-A lost it's oc function my i5-2500k did 4785mhz on air at 1.38V stable.

and thx ino u can't trust the numbers on the Sandy Bridge cpu's and they r all difference but again this here is my first and only i5-2500k ^^

hmm looked like 1.115V even 1.120V was only Prime95 stable for 34mins, i hope 1.125V would be better.

System Name	Lynni PS \ Lenowo TwinkPad T480
Processor	AMD Ryzen 7 7700 Raphael \ i7-8550U Kaby Lake-R
Motherboard	ASRock B650M PG Riptide Bios v. 2.02 AMD AGESA 1.1.0.0 \ Lenowo 20L60036MX Bios 1.47
Cooling	Noctua NH-D15 Chromax.Black (Only middle fan) \ Lenowo WN-2
Memory	G.Skill Flare X5 2x16GB DDR5 6000MHZ CL36-36-36-96 AMD EXPO \ Willk Elektronik 2x16GB 2666MHZ CL17
Video Card(s)	Asus GeForce RTX™ 4070 Dual OC GPU: 2325-2355 MEM: 1462\| Nvidia GeForce MX™ 150 2GB GDDR5 Micron
Storage	Gigabyte M30 1TB\|Sabrent Rocket 2TB\| HDD: 10TB\|1TB \ SKHynix 256GB 2242 3x2 \| WD SN700 1TB
Display(s)	LG UltraGear 27GP850-B 1440p@165Hz \| LG 48CX OLED 4K HDR \| AUO 14" 1440p IPS
Case	Asus Prime AP201 White Mesh \| Lenowo T480 chassis
Audio Device(s)	Steelseries Arctis Pro Wireless
Power Supply	Be Quiet! Pure Power 12 M 750W Goldie \| 65W
Mouse	Logitech G305 Lightspeedy Wireless \| Lenowo TouchPad & Logitech G305
Keyboard	Akko 3108 DS Horizon V2 Cream Yellow \| T480 UK Lumi
Software	Win11 Pro 23H2 UK
Benchmark Scores	3DMARK: https://www.3dmark.com/3dm/89434432? GPU-Z: https://www.techpowerup.com/gpuz/details/v3zbr

System Name	White Phantom
Processor	i5 2500K @ 4.4ghz = 1.360-1.368 vcore
Motherboard	asrock p67 pro (not pro3)
Cooling	prolimatech megahalem with 2x nocuta in push pull (thanks to the 54thvoid) ;) , stock phantom fans
Memory	16gb Kingston hyper x ddr3 1600mhz
Video Card(s)	Asus strix 970 ocd 1.5ghz core
Storage	240gb ssd , 1tb Western digital Black, western digital 320gb
Display(s)	samsung syncmaster p2450 via DVI @1080p 60hz
Case	White and blue NZXT Phantom (carbon fibred sides/door)
Audio Device(s)	onboard , philips AMBX pro speakers 80watts rms
Power Supply	Xfx750
Mouse	Rat 3
Keyboard	Act cheapo "gaming"
Software	windows 10
Benchmark Scores	world record for most amount of times machine has pissed me off ....

System Name	Lynni PS \ Lenowo TwinkPad T480
Processor	AMD Ryzen 7 7700 Raphael \ i7-8550U Kaby Lake-R
Motherboard	ASRock B650M PG Riptide Bios v. 2.02 AMD AGESA 1.1.0.0 \ Lenowo 20L60036MX Bios 1.47
Cooling	Noctua NH-D15 Chromax.Black (Only middle fan) \ Lenowo WN-2
Memory	G.Skill Flare X5 2x16GB DDR5 6000MHZ CL36-36-36-96 AMD EXPO \ Willk Elektronik 2x16GB 2666MHZ CL17
Video Card(s)	Asus GeForce RTX™ 4070 Dual OC GPU: 2325-2355 MEM: 1462\| Nvidia GeForce MX™ 150 2GB GDDR5 Micron
Storage	Gigabyte M30 1TB\|Sabrent Rocket 2TB\| HDD: 10TB\|1TB \ SKHynix 256GB 2242 3x2 \| WD SN700 1TB
Display(s)	LG UltraGear 27GP850-B 1440p@165Hz \| LG 48CX OLED 4K HDR \| AUO 14" 1440p IPS
Case	Asus Prime AP201 White Mesh \| Lenowo T480 chassis
Audio Device(s)	Steelseries Arctis Pro Wireless
Power Supply	Be Quiet! Pure Power 12 M 750W Goldie \| 65W
Mouse	Logitech G305 Lightspeedy Wireless \| Lenowo TouchPad & Logitech G305
Keyboard	Akko 3108 DS Horizon V2 Cream Yellow \| T480 UK Lumi
Software	Win11 Pro 23H2 UK
Benchmark Scores	3DMARK: https://www.3dmark.com/3dm/89434432? GPU-Z: https://www.techpowerup.com/gpuz/details/v3zbr

i5-2500k @ 4ghz how low voltage is possible?

Shou Miko

white phantom

Shou Miko