Will this work with the HP 1256S Desktop power supply 450watts?
1478874
Depends on how many other cards and drives are installed. Not enough info to answer the question. If you only have a single hard disk and no other expansion boards installed, it would probably be okay.
1478875
I Dont know. All I can say is mine is running off 480 watts and periodically shuts the PC down during heavy gaming. Id just spend the 50bux and get a 600w.
373473
I have a 700 W in my machine, so I couldn't say from experience.http://www.realhardtechx.com/index_archivos/Page362.htm recommends a 450 W PSU. So 500 W should be enough. :)
2021581
I have no idea. You might Google the model number and see what power supply it uses.
578687
I have agree with the others here, as long as you have a PCIExpress slot(preferably 1) it should power it. My only question is what kind of computer are you putting it in. If it's a Dell, Hp or Gateway it won't work cause these manufacturers require specific components that are adapted for their systems.
2256843
Sorry Ding. I don't know but it does not list your computer in the criteria, I did some internet surfing and found one that does.. its a 550 watt http://www.cputopia.com/psu-replacement-hp-pavilion-a1430n.html?utm_source=googlepepla&utm_medium=adwords&id=20206522684&utm_content=pla&gclid=CNTz2u3YwLcCFc9xQgodxSMAEg
2036570
Most likely it will work. Here is a site with the specs to your power supply http://www.outletpc.com/bx7516.html. Yours is a 300 Watt power supply and this one is 400 Watts. The only limiting factors are physical size (measure yours and compare) and output connectors (wires). The connectors and wire on the 400 ATX are long and should be sufficient to reach all your peripheral devices.
1078845
It should. Power supplies are fairly standard. I bought this one because it had plenty of power connectors. 500W is plenty.
1446086
Yes. I am running it just fine off a 650W PS. Make sure its a decent quality Power supply though.
1088257
Unknown. Suggest you check your power supply specifications for each type computer. Check with Best Buy Geeks.
1363646
do the part numbers on your power supply match this one? See the HP Support page here; http://support.hp.com/us-en/document/c01781063 for some great 'how to' info. From that page it looks like you might be able to use the 504966-001 but again, let me emphasize- does this power supply part number match what's in your Pavilion?
521334
400 would be pushing it. I have a 600w and it does fine. I would say the minimum would be 500w but it really depends on your total power consumption system wide.
1094877
this should help, just enter in everything on your rig and It will give you a decent estimate of power needed to run it. I suspect you should be fine with the 450. http://extreme.outervision.com/psucalculatorlite.jsp
2250443
it might run fine on 460W but just to be safe go with 500. It really depends on the manufacturer of the power supply and how old it is but i would still go with 500W.
859967
If you are going to go with 500w or 450w, make sure it is a high grade power supply, and not a cheap off-brand model
1094878
this should help, just enter in everything on your rig and It will give you a decent estimate of power needed to run it. I suspect you should be fine with the 450.http://extreme.outervision.com/psucalculatorlite.jsp
1174948
This is a 400 Watt PC power Supply, not a transformer, the short answer is no. Try using a 125VAC to 12VDC Transformer.
182770
I am not sure about the power supply/ computer you have. I have used this card in two different hp computer with the standard power supply with no problems. It'sa great card to replace standard graphics on the mobo. I would consider a more expensive card if you are a gamer.