Fishy 3.3v?

[Dennis Gordon]

I just noticed in Speedfan and Sandra that my 3.3v is being reported as 1.63v. I have an Enermax P651VE 550w PSU running an opty 170 at 2.5ghz on an Epox 9NPA Ultra+. 1.55vcore. I haven't been able to run 100% stable above 2.55. I've also noticed that the vcore fluctuates between 1.51-1.55, which many report as not unusual. The only reason I noticed the voltages is that I have a new Intel build around a used Northwood, and the Aspire PSU is unwavering at 1.52vcore and the 3.3 is spot on. I would think the Enermax would be more stable...

Anyways is that 1.63v reading cause for concern? I do have an identical PSU I could swap in...

 

[gwai lo]

ATX spec gives the PSUs 5% of wiggle room...and that sure doesn't seem like 5%...would stuff even work at that level?

Why don't you taka a reading with a multmeter, software readings are notorious for being inaccurate.

 

[Dennis Gordon]

I would if I had a multimeter...;-)

The machine runs perfect at stock v to 2.4ghz. I need to bump it up t1.52v to run 2.5, but it's solid there under a lot of application stress in XP 64 bit. I am a little suspect of the Epox voltage readings, though.

Since I have another 651VE, I'll swap it in and see what happens. I've been presuming that my inability to hit above 2.6 with this 170 without 1.6+v was because it's one of those "mediocre" 551s. It never occurred to me that it might be the PSU or the mobo...

 

[[Spectre]]

I would if I had a multimeter...;-)

That is the only way to know for sure.....but since the system is running fine the software reading is as usual wrong.