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View Full Version : Can a 36A forton handle 226W Pelt + rest of setup?


blackjackel
01-26-04, 07:49 AM
1700+, 2 harddrives, 2 cdroms, 9800pro AIw, 3 case fans, floppy and a 226W pelt.

can a 36A forton server PSU handle all the above?

by 36A i mean 36A on the +12V line.



Ok, ive calculated that a 226W pelt rated at 25A will run @ 20A when given 12V.

Now on my current setup i have 16A on my +12V rail, and it works fine with no problems. Given that the 226W pelt takes 20A, i should be completely fine because i am left with 16A which is what i started out to begin with.

Now, if the above calculation is correct, then if i decide to run my 130W pelt to cool my GPU instead of the 226W pelt for the cpu, then 36A will be way more than enough to handle this.

I would say a 130W pelt rated at 15A will only use 12A with 12V. Meaning i will be left with 24A to spare. And given that i currently run on 16A that will be WAY more than i need.


Am i correct?

squeakygeek
01-26-04, 03:05 PM
I don't see why not. It's basic addition.

blackjackel
01-26-04, 03:09 PM
Hmmm, good news for me.

Just wanted to make sure, i heard of peoples wires melting right inside the case. If i do use a 226W pelt i will be straining the PSU all the time.

I've been told that fortons are rock-solid and they can handle it, but i dunno...

Is there any way i can calculate how many amps my system is spending? how much strain is on my current PSU, because if i go with 226W that would be a very thin line to cross.... Wont have ANY headroom...


And what sorta tems can i expect with a 1800+ OCD @ 2.5ghz with a 1/2 inch watercooling system, chilled with a 226W pelt.

Can i at least get sub-zero temps?

squeakygeek
01-26-04, 03:24 PM
As for wires melting, just make sure you are using wires big enough for the current you're going to draw. You may need to use 10 guage or thicker, and I can almost garuntee the psu doesn't have wires that thick on it. You could calculate your current usage (no pun intended) by adding up everything you're using, but other than that, I don't think there is a way.

__TRONIK__
01-27-04, 08:03 AM
so are you saying that one would need to solder new 12v wires into the PSU? I was planning on using one of these fortrons dedicated for an 80 watt tec:

Sparkle Power Supply (280 watt) Model FSP280-60FS
Input: 115/230, 7/4,A 60/50Hz Output: +3.3VDC @ 20A, +5VDC @ 22A, +12VDC @ 10A +5vsb @ 1.0A -5VDC @ 0.3A, -12VDC @ 0.8A

I have never used pelt before - I believe IMAX for 80watt pelt is 8A. If this one gives 10A on 12v, does that mean that the pelt will receive too much juice and fry? If it only takes 8A from the PSU, does that mean the PSU is running at 80% full load at all times and is more likely to fail? I hear the same things about fortron quality and my 350watt has been amazing....

squeakygeek
01-27-04, 04:14 PM
I don't think you'll need to solder new wires. If you are using 8 amps, and the psu is able to supply 10, you're fine.

__TRONIK__
01-27-04, 05:43 PM
good news! i jsut found out how to wire 2 psu's together to get the 15v I need in addition to the 10A. Schweeeet

kayl
01-27-04, 09:01 PM
Originally posted by blackjackel
Hmmm, good news for me.


And what sorta tems can i expect with a 1800+ OCD @ 2.5ghz with a 1/2 inch watercooling system, chilled with a 226W pelt.

Can i at least get sub-zero temps?


ok
yes to power supply will handle current.

just cut a few of the 12v wires 3 or more and connect them to the tec, this way the current will be shared between the wires

the tec wont get you 0 deg temps with high vcores.
you need really good cooling for the water, two radiators, or even chillthe water

with two radiators under full load i find temps at cpu to be around ambient (with vcore say 2v to 2.15)
1.9v i get like 25 deg at 28 deg room temp full load

also be careful when connecting power supplys.
if both have same ground things blow up.
i personally think 12 to 13v i have heard is the sweet spot for tec's,
better cooling of the water will make more of a difference than increaseing volts

with one radiator my 226w cooled as well as a 130w tec