I'm getting ready to finally pick up my components. I'm just still in doubt
about my PSU / case. Originally I ordered the Antec Atlas, which includes an
Antec Truepower 2.0 550Watt.
http://www.cluboverclocker.com/revie...tlas/index.htm

This PSU features two 12V rails, each offering 19 amps (total 35 I think).
It's powerful enough, I guess, but not the most advanced powersupply
available. (No active PFC)

I'm now also looking at the Cooler Master iGreen series, 500 or 600 Watts.
These have higher efficiency and three 12V rails.
http://www.coolermaster-usa.com/Products.aspx?pid=1231

Total amps is comparable to the True Power 2.0. The power rating on the
rails is less, though: 19.5 max each, but only 16, 14 and 8 amps continuous.

Can anyone give me a good recommendation which PSU to choose?

I'm going to overclock an E4300 with 2 GB of memory, 1 or 2 harddisks, an
8800GTS-320, and one optical drive.

Thanks in advance,

--
Met vriendelijke groeten, Thomas vd Horst.

Thomas wrote:
Say 125W for the overclocked processor (assumes 3GHz, some Vcore boost).
(125W/12V)*(1/0.90) = 11.6 amps from the processor rail.

The video cards are measured here:

http://www.xbitlabs.com/articles/vid...gts-640_6.html
http://www.xbitlabs.com/images/video...ts320_full.gif

33.2W/12V = 2.77A from PCI Express x16 socket contacts.
65.4W/12V = 5.45A from the Aux Power connector on the 8800GTS-320

I'm *guessing* that the way the max is stated, that the supply
uses a common rail for all three outputs. Otherwise, I'd be concerned
as to how the output rails are wired to the various loads.

http://www.coolermaster-usa.com/Prod...es/1231_11.jpg

Your total +12 is probably around 23 amps and fairly well
split between processor and the rest. The Antec is fine.
The Coolermaster is fine too, as long as you don't
take their "continuity" rating seriously.

There is actually a manual for the Coolermaster!

http://www.coolermaster.com/installa...wer%20600W.pdf

The PCI Express 2x3 connector in item 5.4, runs from 12V1.
The main 24 pin connector runs from 12V1 as well. Thus your
video card would draw 2.77+5.45 if using those two power
sources, or 8.22A. Two HDD, one ODD, three fans, draws
about 0.6+0.6+1.5+0.5 more from 12V1. Total so far is
11.42A from 12V1. And the 2x2 ATX12V which powers the
processor from 12V2, supplies 11.6 amps to run your E4300
at 3GHz. Which means the third rail is unused.

Because the Coolermaster manual mentions "double forward
switching", the supply might be manufactured by Seasonic.

So the Coolermaster looks OK.

Paul

Phil Weldon wrote:
Hm you've got a nice power supply.... According to this LONG list, you've
got a max of 46 amps combined on the 12V:
http://forums.guru3d.com/showthread.php?t=205763

Unfortunately it's not in stock in the store where I'm buying my case...
http://www.alternate.nl/html/product...irection =asc

About the Truepower 2.0: it's powerful enough to power the one GTS, but it's
not fitted to run two. That's why I'm so doubtful.The Cooler Master seems
interesting, but the third 12V rail is too weak (max 8 amps continuous,
where the GTS needs 10 to 11).

I'm actually beginnning to think about the truepower trio 430, which has 16
amps on all it's three rails (but only 32 max combined).

Well, I'll see which PSU 'feels' best tomorrow :-)

Thanks for your help!

--
Met vriendelijke groeten, Thomas vd Horst.

Don't know if this power supply calculator cater's for Overclocking,
see-:

*http://www.journeysystems.com/power_...alculator.php*

davy

I've had great luck with the OCZ Powerstreams, both 600 and
700W. Rock solid voltages even under massive load changes,
long power leads and virtually silent 12cm fans. They're actually
tweaked Fortron OEMs.

"Thomas" <ThomasH (AT) lycosmail (DOT) nl> wrote

Phil Weldon wrote:
THe shop I'm going to visit doesnt have the Enlights. They look ^%*$& cool
though :-)

I think I'll bite the bullet, and get the Antec Titan 650. It's got a
truepower trio 650:
http://www.antec.com/uk/productDetails.php?ProdID=01565

This should be able to provide enough juice to run 2 GTS cards...

Thanks for you help, all of you!

--
Met vriendelijke groeten, Thomas vd Horst.

Phil Weldon;66269 Wrote:
Thanks Phil.... I got 'my' link from the Ref section on the old board
in the computer help desk section.... think it need's an update.

Things have gotten faster and bigge, davy

Phil Weldon;66269 Wrote:
Thanks Phil.... I got 'my' link from the Ref section on the old board
in the computer help desk section.... think it need's an update.

Things have gotten faster and bigger, davy

"Phil Weldon" <not.disclosed (AT) example (DOT) com> wrote

12v rail. http://www.pcpower.com/products/view...php?show=S75QB is
the PSU I have and you can read the info there on how they go about
doing it. 60a is a LOT for a single 12v rail. Let me know what you think
about it yourself. I had to do a bit of case modifications to get it
installed. I also moved the water pump and have the water block
installed on the P5N32-SLI. This MB has heat-pipe cooling on the MB
chipset and one other (think it is a controller) chip. The 2 8800 GTXs
are going to fit fine, of course I will have only one available PCI slot
with those.

Ed

Ed Medlin wrote:
I see there is a metal fan guard? It almost seems that it should be on the
other side of the fan to keep the wires out!

That is great that they are going to fit, and good luck with the bottom
drives!

<><><><><><><><>
I ordered a new cooler, the Thermalright Ultra 120 Extreme, and am
thoroughly disappointed! The E6400 is taking way too much voltage
to keep it stable at 3.52 GHz under load (1.45v), and it's getting too
hot. I got the Noctua NF-S12 1200 RPM fan for it, which was a
mistake. The space at the ends of the blades leaks so much air
rearward that I thought I had installed it backwards and even took it
off. I feel hardly any air coming out the other side.

The cooler appears to have a piece of thin copper sheet covering
the bottom, which is folded-up and has holes from which the heat
pipes protrude. WTF, an extra thermal interface? Perhaps it is
soldered, but I thought solder was a lousy conductor of heat. It was
so not-flat that I was compelled to lap it smooth for a half hour. I
guess that's why they tell you to apply thermal compound to both
surfaces. Of course the nickel plating is now gone-- another poor
conductor, I understand, but relative non-reactive. The mounting
system applies all the pressure to the CPU on the front and centers
the force on the rear entirely on the same small area on the rear
through foam tape. The Biostar board is so thin and flexible that
this mounting system scares me. In retrospect, I wish I had bought
the Noctua Cooler instead, for the better mounting system, but with
a different fan.

I have not extensively tested, but I can run it cool at 3.2 GHz at
relatively low voltage, but must drop memory speed to 400. Both
Superpi and Sandra show no gains over 440 x 7 = 3.08 GHz.
Perhaps I should have left well enough alone, but I just had to know.
I said to myself, "You're going to need that cooler for the Quad core
in August."

Next plan, lap the CPU's IHS and swap the Noctua for one of the
Antec Tricool case fans...