How to lower core voltage?

[Kakao]

XP 1600 ECS K7S5A v3.1
Bios and MB Probe shows Vcore at 1,78. My temps ate too high.
My goal is to lower Vcore and temps to be able to use a lower noise cpu fan. Don't want to overclock.
I think the core voltage showed by bios and MB Probe is accurate because the volts I can (know how to) measure with the voltimeter, +3.3/+5/+12/-12/-5, are almost the same.

 

[Wa11y]

Lowering the vcore can make your system unstable. What are your temps currently, and what heatsink are you using on that system? And do you have any case fans?

If you're not overclocking, temps are really not as big of a concern. Listing your temps and heatsink would really help us.

 

[Kakao]

Temps around 58/61 cpu and 44/48 case under full load.
HSF Coolermaster DP5-6I31C rated for XP1900.
No case fans (don't want more noise).
I don't really worry too much about temps. I worry about noise. If temps were lower I could use a lower noise cpu fan. That extra voltage at the CPU (1.78 instead of 1.75) doens't help.

 

[MikeBD35]

Your case temps are really toasty. What is the temperature of the room its in? My room is about 22C, the case never gets above 30C and my 1200mhz Athlon never breaks 50 under full load with air coming through a blowhole.

The only thing I can think of is to add case fans or cut a blowhole in the side of your case to duct room air directly to the cpu HSF. The trouble with a blowhole is that the heat sink fan is louder because its sound goes right out the blowhole. Other than that you could really go for it and try watercooling.

The only way I'd be willing lower voltage would be if I was underclocking.

Mike

 

[Tismedt]

What kind of thermal paste did you use between the cpu and the hsf. Also make sure the contact area is CLEAN. You may have a void in the contact area that is heating things up. IMO artic silver II or III will lower your temps and allow you to run a slow quite fan.

 

[Kakao]

Mike,

My ambient temperature sometimes goes to 30 C.
I will try to run a tube to the front of the case.

 

[maxima88]

I wish my core voltage was 1.78 stock.
Anyway, your temps seem a bit high.
I can understand your point about more fans creating unnecessary noise. But the cooler your chip, the longer it will live.
I suggest you a 120mm fan that turns out about 30 to 31dba on the side of your case blowing air directly onto your hsf/cpu.
That should lower your temps tremendously and still not add any noticable noise.
Add a low dba exhaust fan too.
Not all fans are noisy.

 

[Stryfe]

Yeah check out the Panaflo fans, they flow reasonable amounts of air and they're exceptionally quiet.