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550 WATT COLORSit PSU FOR 9800GTX

Last response: in Graphics & Displays
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August 14, 2008 8:52:55 PM

First thread

Hi all, I recently bought a new pc, intended for gaming use, the system specs are as follows

Q6600 processor
4X1G1 Crosair ddr800mhz
Asus p5n-e sli
500gb sata seagate barracuda
8500gt 512mb
Thermaltake case
COLORSit 550 watt psu

The first thing I wanted to do with this pc was upgrade the graphics card as the 8500gt is poor for heavy gaming I have been made to believe lol :( 

The card I have my eye on is the bfg 9800gtx :D  which I am going to purchase any day now.

My questions is will my PSU run this card as I have read that this card needs a PSU with 26a on the +12 volt rail???
I dont really know much about PSU's but I have popped off the case and had a look at the side of the PSU and it is as follows

+3.3V @ 28A
+5V @ 30A
+12V @ 20A

I dont want to risk puttin the card into my system incase it nuke's itself lol

Also I have had a look on ebay for the COLORSit PSU and they seem a pretty cheap make but as long as it where to the the card I would be happy as I dont really have alot of crap pluged into the system.

If I need a new psu I would be willing to spend around £50 max! would this get me a decent PSU?

Any replies would be greatly appreciated!
a c 200 U Graphics card
August 14, 2008 9:00:50 PM

No, that PSU has only 20A on the +12V rail.
50 British pounds looks to be about $94, so yes, you should be able to find something decent.
August 14, 2008 9:04:56 PM

Cheers jtt283

you have just confirmed my worst fears lol, but least im not gonna run the risk of blowing my computer up, any suggestions on what sorta PSU I should go for??? and also I really am only gettin the 9800gtx because it apparantly has good preformance, well from what I have seen on comparason charts, Is there a better card out there for same sorta price?

many thanks again jtt283
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August 14, 2008 9:13:49 PM

ati 4850 is as good in current games and has a higher score in the new vantage benchmark, so you might be more futureproof getting instead of 9800 gtx. If ur going for 9800 get the GTX+, same price, cooler and slighlty faster. Anyway whatever you choose they both kick ass in all current games and you'll have a ton of fun with it.
August 14, 2008 9:20:46 PM

cheers shening

ill have a look into it and check out both cards abit more, would the 4850 run on a 550 WATT PSU +12V rail @ 20A or would I still require a better psu?
August 14, 2008 9:27:34 PM

http://www.anandtech.com/video/showdoc.aspx?i=3341&p=22

they have the exact same consumption almost of 228 W, meaning 228W/12V = 19 A. so THEORETICALY your psu would be enough ASSUMING it gives 20A and you dont have HDD or CDrom drive lol, which im sure is not the case. So yeh I would buy another PSU
August 14, 2008 9:32:18 PM

are you sure ur PSU only has 1 +12V rail, like does it say something like +12V1 20A, +12V2 18A? or just +12V 20A. If its just one +12V u need a new psu for sure
August 14, 2008 9:51:13 PM

no man the only numbers that it has listed on the side is

+3.3V @ 28A
+5V @ 30A
+12V @ 20A
the only other "12" number there is ...is -12V @ 0.5A
I have found a review on another psu from same company

http://www.overclock.net/power-supplies/227674-psu-my-n...

they really seem to be a dodgey make lol think ill def go for a new psu
a b U Graphics card
August 14, 2008 10:08:39 PM

If the numbers listed are your actual amperage, then you have a 500 watt model, as none of their 550w models have those amps.

The 550w models(on their site) all have
+5v@30A
+3.3v@30A
+12v@30A
except the one with Dual Rails which has 12v@18A+18A

Source
http://www.colors-it.com.cn/03_products/pccase.asp?max_...
Ive found others that are not listed but they all have 30A on +12v
a b U Graphics card
August 14, 2008 10:33:02 PM

I found a great brand PSU within your budget,
Its a Seasonic S12II-500
£45.14 exc VAT
http://www.xcase.co.uk/p/478084/seasonic-s12ii-500---50...

Or
The OCZ StealthXStream 600w Silent SLI @ £49.99(£58.74 inc VAT)

http://www.overclockers.co.uk/showproduct.php?prodid=CA...

And for the same price
Antec TruePower Trio TP3-550 GB
http://www.dcsplc.co.uk/product/16558

All 3 meet the requirements for the 9800GTX and 4850
And are Decent to Good PSU's

!