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Please help, upgrading Hp power supply

Last response: in Components
November 25, 2008 8:42:22 AM

I have 1 year ago Hp computer that has a 250 W power supply (Standard ATX case i believe)
and i need something better for a new vid card I'm going to get soon.

Here is the information Hp representatives have told me:

24 to 20 pin adapter

120 mm fan

ATX connector should be 24 pin

similar Dimension 53.3 x 33.8 into 24 centemeter

(these are some mobo specs i googled on my cpu)

# One 24-pin ATX power connector
# One 4-pin ATX power connector
# One PATA connector
# Four SATA connectors
# One floppy drive connector
# Two 12v fan connectors for CPU fan and PC fan

So anyways, I'm still unsure if i need 20+4 pin, 24 pin, or a 24 to 20 power supply from newegg.

With all the information provided, please help me.
thanks mate

More about : upgrading power supply

November 25, 2008 9:45:32 AM

Get a power supply with a dividable 24-pin and you can use it either way. That's 20+4 pin. In addition, you'll need either an 8-pin or 4-pin ATX12v connector. I'd get one that's a 4+4 pin version of 8-pin.
November 25, 2008 9:59:35 AM

HP, compaq, and most large system builders have used proprietary. Proprietary hardware is any hardware that will only work the given companys own systems. I cant say for sure the given powersupply is proprietary but there is a good chance.
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November 25, 2008 5:33:10 PM

thanks crashman.

I'm looking at this roswell one

it has a 20+4 pin connector
and 4+4-pin ATX12V/EPS12V Connector

is it safe to buy that one?

last question, I've installed graphics cards, memory, all that, but i haven't replaced or installed a power supply before, is it easy ?

November 25, 2008 5:58:41 PM

4 screws and make sure everything is plugged in. PSU's are pretty simple to install.
a c 125 ) Power supply
a b α HP
November 25, 2008 6:07:51 PM

Rosewill PSUs are generally not recommended. That one in particular doesn't even have Active PFC, so it is probably a cheap one. Check out an Antec Earthwatts; it may be overkill, but $50 for the 650W model is hard to beat:
a b ) Power supply
a b α HP
November 25, 2008 7:37:17 PM

I just upgraded my compaq presario, and it came with a 250 watt power supply; probably the same as yours, since hp owns compaq. I used an antec 350w with 20 pin atx connector, and it works perfectly. Newegg has an antec 650 watt on sale for only $50 with no rebates, and probably free shipping. check it out.
a b ) Power supply
a b α HP
November 25, 2008 7:38:37 PM

And by the way, you don't need the 20 to 24 pin converter; my compaq works perfectly with 4 pins of the 24 pin atx connector left open.
November 25, 2008 8:52:40 PM

yea, thanks O1die,

I have to buy one of these

I have found the 500 W antec power supply (good efficiency and pfc)

and the Roswell that has the full requirements that crashman said

both around $50-60 and something under my spending limit.

So which one is safer to get? I was going to get Antec, but it doesn't say anything about 4+4/8pin 12v connector.

The Roswell one is sleeved properly and looks good as well. any suggestions?
November 25, 2008 10:53:39 PM

A PSU is not something you want to skimp on. If you have to put in a bit extra to get extra reliability, it is worth it. Rosewill PSUs are not usually a good route to go. Check this thread for a decent overview of tiers.

You'll notice that Rosewill PSUs are bottom tier.
November 25, 2008 11:15:33 PM

Get the Antec if its between those 2.

I would measure the space that you have to install the PSU in also. HP are known for rather short PSU's so a regular atx psu may not fit in the space required. Ive also have had the 4 mounting screws not much up with the case holes (i just screwed 2 in rather than the 4 ;) )