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ATI x1900 A-I-W system & Power consumption

Last response: in Graphics & Displays
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March 18, 2006 9:50:15 PM

Hi, im planning to put together a new pc i was wondering if this (Thermaltake Purepower 480W) power suply would be enough to work with these parts that I will be buying soon, here are the components:

- Asus P5WD2-E Premium motherboard
-Intel Pentium 4 640 Preocessor (its a 3.2)
-ATI A-I-W Radeon x1900
-1 or 2 Gigs of DDR2 ram (im stil thinkink if i should get 2 gigs or 1 will be enough)
- 2 hard drives
- 2 optical drives ( a DVD drive and a CD-RW drive)
- 1 floppy rdive
- a Thermaltake case with 7*80mm fans, and 2*60mm fans (in a HD cooling bay)

Will the 480W power supply be enough to power this system? it has a absolute peak output of 550W , but just looking at 480W will it be enough?

Thank You for reading my post, and thx for replies in advance.
March 18, 2006 10:25:47 PM

480W should be enough, but go 500W just to make sure, since P4 chips are known for their power consumption. With all those fans and devices, i think a 500W should power them all.... to be sure, a Hiper 580W PSU will handle all of that with ease.....
March 19, 2006 1:37:21 AM

im asking because im using a 480W psu now, i didnt want to buy a new one if this one will be fine, so far i had no problems with it whatsoever, it cool, never was warm at all (it has 2 fans in it) and after spending that $95 on it when i bought it was a good purchase, thats why i wanted to know wheather it would be sufficient.
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March 19, 2006 10:48:35 AM

Well, i think a 480W should do it.... give it a try, see how it runs, if its stable... no need to buy a 500W+ PSU....
March 19, 2006 3:09:20 PM

The documentation that came with my X1900XTX says you need 450watts for a single X1900 based cards, 550 for 2, so im sure you'll be fine.
March 19, 2006 4:49:34 PM

Thx for the help both of You :) ,
btw just 1 more question i saw i think on one of the retailers sites that the psu needs a 30A on a 12 rail, does it have to be nescessarely 30A? i think my psu is a 18A (but on only 1 rail) im not shoor, and online on the thermaltake's site there is no info on my psu(it was taken down last year i think, but they were doing some "remodling" of the site, is there anyway i could mesure it/find out? (if it is important;)

p.s.
just for a bit of info i read in some review that ati in their new drivers i think the 6.2 or 6.1 changed something that the 1x00 series use up less power, so thats good news ;) 
March 20, 2006 5:37:46 PM

You'll have to contact your PSU mfr (ThermalTake) in order to know what it's speced for, but it should say right on the PSU itself.

As for the drivers, that was to take out the clock throttling issue where the cards we running @ 100% even at idle.

To get an idea of the AIWX1900's power profile take a look at this review;

http://techreport.com/reviews/2006q1/aiw-x1900/index.x?pg=11

and some overall insight from Xbit;

http://www.xbitlabs.com/articles/video/display/gpu-consumption2006.html
March 20, 2006 8:15:15 PM

thx for the links, i read some reviews and i was a bit confused, in some reviews the ati 1900aiw power consumption as a whole pc was about 286W an in another review in which only the card's power consumption was measured it stated that it used 287W (at full load, and i think 157 at idle) so it was weird that the rewiews contradicted aither the first reviewers messed something up, or the second one really was inprecise, and totaly overstated the power consumption there.(althou they stated that they used a power consumprion monitor that is plugged in to an outlet, then it was plugged into the pc, to monitor the total power consumption)
April 5, 2006 1:27:57 AM

does anyone know why is it so? the differences in power consumption?
April 5, 2006 1:48:14 AM

Because they are idiots!

The card could NEVER draw that much power through the PCIe slot and single 6 pin connector alone.

Look at the Xbit review for the X1900XT's power consumption and it should give you insight into tht efact that a higher clocked card with MORE memory consumes only 108W at load, therefore it's unlikely the card itself is pulling in 280W. Both are total consumption, the Xbit review is consumption of just the card.

You'll be fine if it's a quality PSU.
April 8, 2006 4:58:31 AM

You've got more than enough power
!