Which PSU?

#21

Fishface wrote:

Quote:

Try this for monitoring temperature:
http://www.alcpu.com/CoreTemp

Cool program. But it shows a discrepancy with SpeedFan and my BIOS readout;
the VCorce is 1.325 Volts, while I selected 1.38V. Speedfan shows about
1.36 Volts.

Speedfan also sees the core temperature for each core, and indeed, it;'s
amazing to see the temperature FLY op in time.

What I like about Speedfan is the Chart... It's possible to see how quickly
the temp goes up in time, and you get an idea what the final stressed
temperature is...

--
Met vriendelijke groeten, Thomas van der Horst

#22

Phil Weldon wrote:

Quote:

I tried Core Temp. The dual temperature display is nice, but the core
voltage display reports the default voltage, not the actual voltage.

Yes, default voltage. CoreTemp says my E6400 has a default voltage of
1.275v, presumably by reading the vid pins, hence the label VID. I noticed
Newegg lists the E4300's voltage as "1.225V-1.325V." Perhaps this has
some bearing on the overclockability of a particular sample. I find that
CPU-Z shows Vcore, and I see that it drops under full load. What's the
default on your chip?

#23

"Fishface" <invalid (AT) ddress (DOT) ok?> wrote

Quote:

Ed Medlin wrote:
You know, I thought I would have problems with the top drive bay and
the video cards. I am losing one (the top one) drive bay because of
the ears on the removable sliders do touch the top 8800. The rest of
the bays are fine. I can't figure out the procedure for mounting a
drive
in that sucker. Swiftech did not ship instructions for the Antec
case,
so I am on my own there.

Mounting which drive?
http://www.silentpcreview.com/article255-page4.html
I had the most trouble with the floppy and optical drives, knowing
which
holes to use.

The floppy was the worst, but not bad. I just mounted the sliders flush
with the front and plugged in the cables and slid it in. Same with the
optical drives.
My major problem is the bottom drives.

Quote:

Here is the downloadable manual, if you'd call it that:
http://www.antec.com/us/productDetai...?ProdID=81802#
I assure you the one that came with it is no better and much smaller!
I found the online reviews of the case more helpful than the manual.

Yep. I found that and you are correct there.......:-)

Quote:

The bottom drives are actually harder to get wiring to than the top.
I have to route the SATA and power cables through a
small hole just beside the 100mm center fan.

Yes, it makes for quite a rat's nest. You do know that panel slides,
though, right? http://www.silentpcreview.com/article255-page3.html

That review, while helpful with several things, does not show the mods
that Swiftech did to the case. The bottom fan is on the HDD rack side
rather than the PSU side and I am going to remove it altogether. The PSU
I installed moves a ton of air and plenty to move air across the HDDs.

Ed

Quote:

#24

On Sun, 29 Apr 2007 01:34:31 -0400, Paul <nospam (AT) needed (DOT) com> wrote:

Quote:

Phil Weldon wrote:
'Paul' wrote, in part:
| This web site does anatomy checks. The NeoHE 550 has one 12V rail to
| run its three outputs.
|
| http://www.hardwaresecrets.com/article/361/5
|
| Between www.jonnyguru.com and hardwaresecrets.com , you'd be surprised
| how many supplies are breaking the rules. PC Power and Cooling is
| being honest about it, while the others practice deception.
_____

What Hardware Secrets naively call 'jumpers' are actually shunts. Each rail
has a shunt. The over-current sensor measures the voltage drop across the
shunt. In the case of the three +12 VDC rails if any of the three sensors
measures an overcurrent then the entire + 12 VDC is shut down or limited.

Page 29 of
http://www.formfactors.org/developer...public_br2.pdf
explains the short circuit and current limit protection.

The Antec Neo HE 550 provides this through an IC that, among many other
functions, senses the voltage drop across the three + 12 VDC shunts ( + 12
VDC for the CPU, + 12V1DC and + 12V2DC.

So it really is that the 650 Watt PC Power & Cooling supply does not adhere
to the specifications while the Antec Neo HE 530 does.

Phil Weldon

I agree. I didn't click on all the pictures and try my own reverse
engineering, so I missed that. I see they are labeled on the PCB as "R508"
and "R509", so they do look like they're intended to be resistors.

There are supplies that don't have a current limit, because on at least
one of them, they managed to draw 30A from the 12V rail, even though the
label on the supply was rated for a lot less.

Like I mentioned, I'd really prefer if the jonnyguru site would include
some overcurrent testing, just to see what will come out. Overcurrent
circuits have to be set a bit higher than the rating on the label (like
maybe 30% higher), and with a power supply tester, it would only take
a few minutes of testing, to see how far each rail can go, and
whether the current level is just 30% over, or a lot more.

And I don't understand how this 20A limit thing is being handled. For
example, the PC Power and Cooling Supply, has quite different agency
approval stamps on it, than another supply I looked at. Very minimal in
fact, on the Silencer 750.

But what is weird is, the claimed 240W secondary limit is supposed to be
part of IEC 60950 (and follow-on specs). At least, that is what a couple
of the ATX power supply specs (from formfactors.org) say.

So, when I look at this product:

http://www.newegg.com/Product/Produc...82E16817148008

the output is listed as 12V @ 35A, implying a single output, and
yet they have a number of agency approvals listed with 60950
in the title. (This is in the specification section of that page.)

What I'm missing here, is I've never seen a copy of 60950,
either the older ones (when it was called IEC 950), or the
more recent ones. I don't know if someone doesn't feel the
spec applies to them, or what.

Paul

actually, agency approval doesn't mean it meets the "approved" spec.
agencies often waive a spec requirement for a company's design if
the essential safety factor involved is covered in some other
technical manner and it passes necessary safety tests. the agencies
will work with you as long as your product is demonstratively safe.

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Which PSU?

Hardware Overclocking Discussions about overclocking (alt.comp.hardware.overclocking)

Re: Which PSU? - 04-29-2007 , 04:30 PM

Re: Which PSU? - 04-29-2007 , 06:00 PM

Re: Which PSU? - 04-30-2007 , 10:43 AM

Re: Which PSU? - 05-03-2007 , 09:33 PM