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At what Vmch do you recommend I get a HSF for my north bridge?

post #1 of 4
Thread Starter 
Right now my Vmch is 1.5. However, if im going to pass 420Fsb on my mobo I'm going to need to bump it up to 1.55v. There is definitely airflow over it, as my Fm121 is blowing down, and I have a 120 intake that is blowing over it, and a 120 exhaust. I have not reseated my north bridge hs with AS5.

At what Vmch is it recommeneded to buy a HSF for it?
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my computer
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Hard DriveOSMonitorPower
C300 + WD 640GB Windows 7 Samsung 22'' PC Power and Cooling 500 Watt 
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post #2 of 4
i dont really have a asnwer for your question but when you touch the NB heatsink, is it hot? on my p5w i have my vmch turned to 1.75 and its only on the warm side. not hot.

and how come i have to have a high vmch (1.85) to get a fsb higher than 430?

oh and i just recently installed the optional fan that came with the mobo, i think it helps a little bit.
Poopsicle
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post #3 of 4
Thread Starter 
i've used this site's vmch explanation on the p5w, also, i have an earlier version that cuts off vmch at 1.65 max. but check out this equation http://www.xtremesystems.org/forums/...&highlight=MCH
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Intel Core i5 2500k Gigabyte GA-H67MA-UD2H-B3 Radeon HD 4850 512MB 8GB DDR3 1333 
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Lian Li PC-C50 
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my computer
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CPUMotherboardGraphicsRAM
Intel Core i5 2500k Gigabyte GA-H67MA-UD2H-B3 Radeon HD 4850 512MB 8GB DDR3 1333 
Hard DriveOSMonitorPower
C300 + WD 640GB Windows 7 Samsung 22'' PC Power and Cooling 500 Watt 
Case
Lian Li PC-C50 
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post #4 of 4
yeah ive read that thread a while back. i calculated my goal FSB of 430 (~1.56v) and i couldnt even boot. i turned it up to 1.65 and i got my system to post. 1.75 got me to the windows login screen, 1.85 was the magic number.

i guess i need to tweak my other voltages and try 1.55v and see if im stable.
Poopsicle
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Hard DriveOptical DriveOSMonitor
Corsair Force 3 120GB + 3TB Lite-On DL DVD+/-RW w/ Lightscribe Windows 7 Pro x64 Samsung B2230 @ 1080P 
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Poopsicle
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i7 2600k @ 4.5GHz Gigabyte Z68X-UD4-B3 EVGA GTX460 SC EE 1GB 8GB G.Skill @ 1333MHz (7-7-7-21) 
Hard DriveOptical DriveOSMonitor
Corsair Force 3 120GB + 3TB Lite-On DL DVD+/-RW w/ Lightscribe Windows 7 Pro x64 Samsung B2230 @ 1080P 
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Logitech MK710 Corsair HX 850W NZXT Tempest Evo Logitech Performance MX 
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