Question about voltage: DIMM, CPU, AGP...

[brigden]

I recently purchased a 1GB PC3200 Corsair Value Select dual channel kit. I popped the two DIMMs in, underclocked them synchronously at 166MHz, and set the timings to 2.5-3-3-11. The system booted perfectly, and once in Windows XP, I opened the NVIDIA System Utility and noticed the DIMM voltage was over 2.7V, in the red.

I rebooted, and manually changed the voltage from "Auto" to 2.5V.

That got me thinking; are the other system component's voltages off? NVIDIA System Utility shows:

CPU: 1.650
AGP: 1.500
DIMM: 2.527
NF: 1.583 (WTF is NF?)

Was the DIMM voltage so high because it was underclocked? Here are my system specs to help suss out the issue:

Athlon XP 2700+
EPoX 8RDA+ (v2.0/latest BIOS)
1GB PC3200 Corsair ValueSelect
ATi 9700 Pro

See here for more details.

Thanks for any help.

 

[brigden]

Anyone?

 

[brigden]

No love?

 

[oldman420]

high end ram loves voltage and you can set that manualy in the bios, get the machine under load and then after groundiny yoursels on the case reach in ant feel the dimm if it is room temp or warm you are ok if it is hot turn down the vdimm
good luck

 

[brigden]

Originally posted by: oldman420
high end ram loves voltage and you can set that manualy in the bios, get the machine under load and then after groundiny yoursels on the case reach in ant feel the dimm if it is room temp or warm you are ok if it is hot turn down the vdimm
good luck

I can't find any data on what is considered default voltage for my modules. I don't want to damage the RAM.

 

[viivo]

Newegg lists 2.5 in the specs of all the Value Select line.

 

[First]

All shipping DDR modules for the past few years are meant to be run at 2.5V. The DIMM slots on your motherboard should have "2.5V" inscribed on them. 2.5V is the default voltage.

Running your DDR modules at 2.6V is just fine, or for that matter 2.7V. Though I wouldn't venture higher than 2.7V if you can avoid it, unless you frequently upgrade your memory and don't particularly care if it shortens your DDR module's lifespan.

 

[brigden]

Originally posted by: Evan Lieb
All shipping DDR modules for the past few years are meant to be run at 2.5V. The DIMM slots on your motherboard should have "2.5V" inscribed on them. 2.5V is the default voltage.

Running your DDR modules at 2.6V is just fine, or for that matter 2.7V. Though I wouldn't venture higher than 2.7V if you can avoid it, unless you frequently upgrade your memory and don't particularly care if it shortens your DDR module's lifespan.

Thanks, Evan. Next question: Does a higher voltage have any influence on performance, negative or otherwise?

Oh, and why would my DIMMs be auto detected with a voltage of 2.7?