Upgrading Graphics card but need new PSU

Im upgrading my Graphics card soon but i will need a new PSU for my comp. Here is my computer: http://h10010.www1.hp.com/wwpc/ca/e...3158-12133158-12133158-81959348-81979614.html

This is the card i want: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130440 (Seems like a great card for the cost...And ive been told its more than enough to play games with a graphical level such as Fallout 3 at Max settings with Max FPS)

The PSU i am using now is a LITE-ON, Model No. PS-5301-08HA. and says its "Total DC output" is 300W so im assuming its a 300W PSU, Whish isnt enough for the aformentioned Graphics card (Minimum recommended power supply 400W, with +12 Volt current rating of 26 Amps)

My computers Dimensions are mentioned in the PC link i posted, and my PSU dimensions are aprox 5-15/16" wide, 5-1/2" deep and 3-3/8" tall OR 150mm Wide, 140mm Deep, 85mm Tall.

Any PSU reccomendations? If you need any other measurements, let me know

 

Well, any ATX will fit your case. I have a couple of 9800GTs(512 MB) on a 4GB RAM quad with an Antec Earthwatts 500W going good after a year, I know I'm pushing it. Should be good for you.

 

neither of the 12v rails has enough Amps to support a 9800GT. they both output 17A and the 9800GT requires 26A. and i cant find the dimensions. o.o

 

Wait i did some reading and on another site this same PSU was reccomended to someone who needed 22Amps... so if a Graphics card requires say 28A and you have 2 x 12V@18A Rails, would that be enough power? i mean a Single Rail doesnt have 28A alone but together they have 38A...

So my question is...Is if the combined Ampage of all 12V rails in a PSU that you take into consideration rather than the singular power of 1 Rail?

If it IS the combined power, then i think this PSU would actualy work (if it fits)

 

Ya well, you'll have to get to something like a Corsair TX750W then. They have a 28A rail. Seriously, you don't really need more than the 500W that I linked to. Of course wait for other replies first before purchasing. Here's my two set ups, the lower one has a GTX260-216 and all GPU's are OC'd to the max running 24/7. Oh, my GPU's are also rated at needing 26A. Excuse the mess.:-D

http://img15.imageshack.us/img15/9501/mlna0026.th.jpg

http://img4.imageshack.us/img4/1742/mlna0031.th.jpg

 

Can anyone tell me how a PSU works? i mean the one AugieDoggie showed me had 2 x 12V@18A but the card i want to play requires 26A on 12V. The funny thing about that is i read a post i found on Google from someone looking for a powersuppy with 22A on 12V and this EXACT SAME PSU was reccomended to him... and under one of the reviews it even sais...

"Pros: 34A max on the 12v rails, and 80 PLUS certified. Easily powers my e6600 system with an 8800GTS. Built by Se@sonic, a quality manufacturer."

Here is the PSU again: http://www.newegg.com/Product/Produ..._re=antec_power_supply-_-17-371-007-_-Product

So take a look for yourself, it has 2 x 12V@17A, But wouldnt i need 26A on a SINGLE rail for the 9800GT? or is it the combined power of Both rails? im very confused right now... i didnt think power supplies would be this hard to buy :banghead

 

What about this: http://www.newegg.ca/Product/Product.aspx?Item=N82E16817139008

Seems like a Great PSU for the price. If i can get something that works for cheaper, ill take it, but this is a Corsair, and a Single Rail of 12V@30A so i can sleep at night =/

But yeah, opinions? and would it fit it my system? its ATX but it doesnt list dimensions so iunno...

 

Hehe, ya it is confusing to me too and I hope some experienced member can explain why it works. I just gave you my experiences and what worked for me. As to your PM, all PSU's are ATX form factor these days for most desktops. Open up your side panel and the PSU should say ATX somewhere on the label.

BTW, sorry about the TX750 it is not a 28A rail but a 60A rail, my eyes are bad. So that would be overkill for you unless you plan to get a second card in the future. Having a bit too much power is always better than not enough.

 

Here's a good blurb written about 11/2 yrs. ago about rails from an expert.

 

Ima start using bullitens for my questions cause i have too many xD. Keep in mind i dont plan on upgrading this rig in the future, if i make a better computer in the future it will be from scratch. All i want is a Cheap PSU that can support the single EVGA 9800GT. Keeping in mind the PSU i use now is a 300W Single 12V@19A Rail.

1. So is this: http://www.newegg.ca/Product/Product.aspx?Item=N82E16817139008 Overkill?

2. If it is Overkill, can you reccomend a Better (As in cheaper but still good enough, as to Not bottleneck my card) PSU?

 

That's a good PSU for you, cutting it a bit close but still decent. I just noticed you're a fellow Canuck, check out ncix.com as I find their prices better and depending where you live, the provincial sales tax is not added either, like for me in Quebec. I buy most of my parts there but as it's based in BC, waiting for trucked parts is a bit hard.:-D

 

Ill check the site out, and yeah im from Ontario, an hour from Toronto. Although im actualy a Newfy

But anyways, what did you mean im cutting it a little close with that PSU? the 9800 GT is only 400W Power Supply Minimum with a 12Volt current rating or 26A. Maybe im missing something but it looks right to me o.o

 

Well, manufacturers always quote the bare minimum needed and I found that to be misleading. I had a 420W Thermaltake PSU(quality) and it couldn't power my 9800GT. Since the Corsair you linked to has a 6-pin connector bodes well but power supplies degrade over time, well the capacitors do.

I realize you're kinda tight on the cash though if you get a cheap no namer 500W you could put your whole machine at risk which obviously costs more than a decent PSU that you can depend on. Don't try to save $10 or $20 either, it'll cost more in the long run. I'll shut up now.

 

1. so when it says 400W, its really saying 400w is the BARE minimum?
2. I cant support SLI on my comp so wouldnt it be better to get a 500w Single Rail model?
3. If it is better to get a Single Rail 500w model, can you reccomend a good one? Maybe a corsair model? (I heard corsair is one of the best, if not THE best brand name for PSUs)

 

4. What about this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139003 Would that cut it for the 9800GT you think?

 

#1) yes
#2) perfect but single rail not necessary, %20 buffer. It's like a car's engine, go at 90MPH with a four banger with the pedal to the metal all the time or cruise at 90 with a big block V8, only difference being you won't need more electricity as opposed to gas.
#3) It doesn't matter for you, it's marketing hype. I've had/have Corsair's, Antec's and Thermaltakes and my one and only no name PSU which came with the first machine I bought wouldn't boot when I added an extra 256MB stick of RAM and a second hard drive. As long as the PSU has at least one 6-pin connector, preferably 2 you're good to go and the newer PSU's all have that most important of connectors for power hungry GPUs, well the larger ones do.

 

Yeah 550w would be more than enough but get a 650w to be on the safe and future proof side
Scrap that Antec I would go with a Corsair 650W TX which is $90 after MIR.
http://www.newegg.com/Product/Produ...005&cm_re=650w_corsair-_-17-139-005-_-Product
+3.3V@24A,+5V@30A,+12V@52A,-12V@0.8A,+5VSB@3.0A

 

there is NO way i need that much power. i jsut want to run a 9800GT, it only requires a minimum of 400w output and a single 12v@26AMP rail. i do NOT intend to upgrade in the future, i intend to build from scratch maybe in the late future, as in new case and mobo and everything. once i get the 9800 GT in my comp, it will never be upgraded again. not this rig anyways.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139003&Tpk=corsair 450 should be more than enough, correct?

 

Excellent choice sir! I know you'll be happy with that for several years to come! :cool I wonder if those come packaged in the blue Corsair bag? I freaked when I opened the TX750W box as it looked like I was getting a bottle of good booze.:-D http://bestsmileys.com/drinking/11.gif

 

Can you jsut give me an answer? a straight answer i mean. Is it or is in not sufficient for a Single 9800GT. you said 400w was bare minimum, so a 450 should be enough, no?

 

Well, I did say 'excellent choice'. So yes, it's good IMHO. That's as 'straight' as I can say it. You have a good brand, a decent margin of power and all the connectors you need with the 450W. Sorry for any confusion.

 

Ok so i wont get bottlenecked with that 450w right? what im asking is will it supply the MAX ammount of power i will need. I dont need a PSU that will buckle under a high load.

 

You'll be fine unless you start overclocking things and even then you shouldn't have any issues, like I said before, my Antec 500W powers 2 overclocked 9800GT's on a stock Intel quad machine with 4 GB of memory and three hard drives. Go for it bai.

Oh, my GPU's are running folding@home 24/7 which stresses them to the max, gaming shouldn't faze it either.

 

I have no intention of ever overclocking this machine. i dont even understand to build a rig yet, im not gonna go overheating it lol. So your 100% sure the power is more than sufficient?

 

Yes should work

 

I just looked at my current PSU and i couldnt find "ATX" on it anywhere... so how do i know the PSU im looking into buying will even fit?

 

Yes I am though I don't have experience with that particular PSU. It has a good user rating too. Wait for others to chime in as I'm no PSU guru, I'd go for it if I was in your shoes but then it's not my money either. My %100 recommendation would be the Corsair 500W you linked to before.

 

Yeah go with that 550w is you insist, that amd x4 cpu isn't great but it will manage