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2600k Safe to lower PCH voltage?

post #1 of 9
Thread Starter 
My stock PCH voltage is 1.062v... and heard that the temp of the cpu cooler if PCH voltage is lowered... not sure if it's true or not.. I wanted to lower it to 0.9... but just wondering if it's safe to do so...
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post #2 of 9
As long as it's stable, I don't see why not.
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post #3 of 9
Quote:
Originally Posted by xxlap1xx View Post
My stock PCH voltage is 1.062v... and heard that the temp of the cpu cooler if PCH voltage is lowered... not sure if it's true or not.. I wanted to lower it to 0.9... but just wondering if it's safe to do so...
normal PCH voltage is 1.05v AFAIK..so keeping it lower than what you have seems to be safe..but watch out for stability..if you do have a dual GPU setup its needed to raise this a bit..
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post #4 of 9
Thread Starter 
thx for help guys... +rep to yall!
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post #5 of 9
Lowering PCH voltage does absolutely NOTHING for cpu temps. The PCH isn't tied to the vcore or PLL. PCH controls I/O ports and slots. The only thing lowering it will do is reduce your southbridge temps slightly. This was actually recommended for people on B2 boards that were using the SATA II ports. But you will find yourself crashing if you load up the SATA's with many HDD's or using multiple video cards if you downvolt it. PCH might need to be set at 1.20v if you overclock to high multipliers and are using SLI/Crossfire, to avoid crashes in the video driver, just like raising VTT is necessary for 4 sticks of RAM and high ram clocks.

Sorry for being harsh to you earlier but you were spamming this question on every forum section, which is why i delayed answering it.
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post #6 of 9
Thread Starter 
Quote:
Originally Posted by Falkentyne View Post
Lowering PCH voltage does absolutely NOTHING for cpu temps. The PCH isn't tied to the vcore or PLL. PCH controls I/O ports and slots. The only thing lowering it will do is reduce your southbridge temps slightly. This was actually recommended for people on B2 boards that were using the SATA II ports. But you will find yourself crashing if you load up the SATA's with many HDD's or using multiple video cards if you downvolt it. PCH might need to be set at 1.20v if you overclock to high multipliers and are using SLI/Crossfire, to avoid crashes in the video driver, just like raising VTT is necessary for 4 sticks of RAM and high ram clocks.

Sorry for being harsh to you earlier but you were spamming this question on every forum section, which is why i delayed answering it.
Thanks for info... yea I admit that i was a little hurry to find out the answer yesterday... Because I couldnt find any answer on google or anything and i'm afraid that things will be damaged or something by lowering pch... anyways... +rep for explaning! thx again!
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post #7 of 9
It's fine. There's really no need to lower the PCH on B3 boards. Since there are really no benefits and you just risk problems down the road. I suppose lowering it can save a couple of watts of power...
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post #8 of 9
Hi, I would please ask. I have a 4870X2 graphics card and motherboard, plus P8P67 processor 2600k. When OC processor, so I will cut by 20 FPS down.
The default setting no OC CPU is all right.

How much voltage can be added to the PCH in bios from 1.05v basic setup?
I try everything.
thx
post #9 of 9
Quote:
Originally Posted by Remmi View Post
Hi, I would please ask. I have a 4870X2 graphics card and motherboard, plus P8P67 processor 2600k. When OC processor, so I will cut by 20 FPS down.
The default setting no OC CPU is all right.

How much voltage can be added to the PCH in bios from 1.05v basic setup?
I try everything.
thx
try 1.10v. Don't go above 1.20v.
SB Rig
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WD 2 TB, WD 1 TB, 250gb Liteon ihbs212 blu-ray burner/reader XP+W7 Benq XL2720Z 
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Ducky Shine 69/Year of the Goat/Shine 5 Seasonic Platinum X1000 Corsair 760T Logitech G502 with r0ach approved ™ sensor 
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Puretrak Talent 
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SB Rig
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CPUMotherboardGraphicsRAM
i7-2600k Gigabyte P67A-UD5 B3 R9 290X 16GB 
Hard DriveOptical DriveOSMonitor
WD 2 TB, WD 1 TB, 250gb Liteon ihbs212 blu-ray burner/reader XP+W7 Benq XL2720Z 
KeyboardPowerCaseMouse
Ducky Shine 69/Year of the Goat/Shine 5 Seasonic Platinum X1000 Corsair 760T Logitech G502 with r0ach approved ™ sensor 
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Puretrak Talent 
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