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Undervolting a 9900k

Go to solution Solved by Princess Luna,
2 minutes ago, Aciderr said:

im trying to keep it at 5ghz, i just want to try lowering it to get better cooling.

Usually it's the other way around... you need better cooling to get a lower voltage requirement, the hotter the CPU is the more electricity it needs to keep it's clocks, the more electricity it needs the hotter it gets and so it's a vicious cycle.

my mobo is the Z390 Aorus Master, i noticed that the CPU at 5ghz takes about 1.344-1.355 volts. if anyone here knows how to undervolt it just to see if it can still perform good with lower voltage an answer would be very appreciated.

i already tried lowering VCore from 1.2 to 1.195 but that made the voltage go to 1.18

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I mean 1.35v to sustain 5ghz all cores is not the worse thing ever, is it OC or MCE?

 

What frequency are you trying to sustain while undervolting?

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2 minutes ago, Princess Luna said:

I mean 1.35v to sustain 5ghz all cores is not the worse thing ever, is it OC or MCE?

 

What frequency are you trying to sustain while undervolting?

i overclocked it myself, didnt touch the button on the mobo. im trying to keep it at 5ghz, i just want to try lowering it to get better cooling.

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2 minutes ago, Aciderr said:

im trying to keep it at 5ghz, i just want to try lowering it to get better cooling.

Usually it's the other way around... you need better cooling to get a lower voltage requirement, the hotter the CPU is the more electricity it needs to keep it's clocks, the more electricity it needs the hotter it gets and so it's a vicious cycle.

Personal Desktop":

CPU: Intel Core i7 10700K @5ghz |~| Cooling: bq! Dark Rock Pro 4 |~| MOBO: Gigabyte Z490UD ATX|~| RAM: 16gb DDR4 3333mhzCL16 G.Skill Trident Z |~| GPU: RX 6900XT Sapphire Nitro+ |~| PSU: Corsair TX650M 80Plus Gold |~| Boot:  SSD WD Green M.2 2280 240GB |~| Storage: 1x3TB HDD 7200rpm Seagate Barracuda + SanDisk Ultra 3D 1TB |~| Case: Fractal Design Meshify C Mini |~| Display: Toshiba UL7A 4K/60hz |~| OS: Windows 10 Pro.

Luna, the temporary Desktop:

CPU: AMD R9 7950XT  |~| Cooling: bq! Dark Rock 4 Pro |~| MOBO: Gigabyte Aorus Master |~| RAM: 32G Kingston HyperX |~| GPU: AMD Radeon RX 7900XTX (Reference) |~| PSU: Corsair HX1000 80+ Platinum |~| Windows Boot Drive: 2x 512GB (1TB total) Plextor SATA SSD (RAID0 volume) |~| Linux Boot Drive: 500GB Kingston A2000 |~| Storage: 4TB WD Black HDD |~| Case: Cooler Master Silencio S600 |~| Display 1 (leftmost): Eizo (unknown model) 1920x1080 IPS @ 60Hz|~| Display 2 (center): BenQ ZOWIE XL2540 1920x1080 TN @ 240Hz |~| Display 3 (rightmost): Wacom Cintiq Pro 24 3840x2160 IPS @ 60Hz 10-bit |~| OS: Windows 10 Pro (games / art) + Linux (distro: NixOS; programming and daily driver)
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Just now, Princess Luna said:

Usually it's the other way around... you need better cooling to get a lower voltage requirement, the hotter the CPU is the more electricity it needs to keep it's clocks, the more electricity it needs the hotter it gets and so it's a vicious cycle.

oh, alright i get it now. thanks!

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You should be able to lower voltage a bit, a decently binned 9900K should do 5Ghz at 1.3-1.32v AFAIK. Have you looked at LLC settings at all? 

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