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Need help with a PSU

Last response: in Components
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February 18, 2013 5:26:22 PM

Hey guys I got a HP Pavilion HPE H8-1287C, the PSU and GPU suck on it. I just ordered an Asus 7850 1gd5 GPU for it, but now i need a PSU, I've did a bit of research on it, heres what i know so far.

- The 7850 card is pretty good as far as power consumption
- but due to the i7 CPU and 12GB Ram i will need more power
- in my other post, someone recommended a 750w PSU
- Some of the brands i should stick to is Corsair, Antec, Seasonic.

Now this is where i'm confused, I have read some people bought the wrong power supply that is not compatible with their motherboards / GPUs? how can I avoid this issue? Also how can I get a power supply that will best fit my computer (size wise), I know all of HP has their hardware proprietary, so what is the best way to go about this?

here are the specs on it.

http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en...

MB - IPMMB-FM (Formosa)
CPU - i7 3770
RAM - 12GB PC3-12800
Case - Mid Size ATX
PSU - hide
Internal 300W (100V-240V)
Form factor: Internal ATX
Total wattage: 300W
Nominal input voltage range: 200-240V/3A (50-60Hz)
Dimensions: 150mm x 140mm x 86mm (5.9 x 5.5 x 3.4 inches)

so what PSU can I get that will fit it best?

Thanks guys

More about : psu

a c 1195 ) Power supply
February 18, 2013 6:46:06 PM

For a system using a single reference design Radeon HD 7850 graphics card AMD specifies a minimum of a 500 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 27 Amps or greater and have at least one 6-pin PCI Express supplementary power connector. Some of the non-reference design Radeon HD 7850 graphics cards require at least two 6-pin PCI Express supplementary power connectors. The ASUS HD7850-DC-1GD5 only requires one 75W 6-pin PCI Express power connector.

The HP Pavilion HPE h8-1287c Desktop PC uses the standard ATX PS2 form factor physical dimensions (i.e. 150mm (W) x 86mm (H) x 140mm (D) / 5.9"(W) x 3.4"(H) x 5.5"(D)) for the power supply unit. The depth may vary depending on the power supply's capacity rating.

The power connectors, on the Pegatron motherboard, all adhere to the ATX12V specification so they are not HP proprietary.

What is your budget range?
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a c 1195 ) Power supply
February 18, 2013 7:19:05 PM

truwrxtacy said:
this is the exact card i got. http://www.amazon.com/gp/product/B00A6GC5VK/ref=oh_deta...

I would like it to be as cheap as possible, under $100 if i can.

The Seasonic S12II-520 Bronze (SS-520GB), with its maximum combined +12 Volt continuous current rating of 40 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 7850 graphics card.

SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply for $59.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

or the modular version

Seasonic M12II-520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply for $79.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

or anything on this list:
http://www.newegg.com/Product/ProductList.aspx?Submit=P...
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February 18, 2013 7:26:27 PM

thanks alot for the info guys, this 2nd part is just for curiosity. If my card requires minimum power of 500, if i get a 520-550 psu, do i not need to compensate for power needed for my processor/ram?
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a b ) Power supply
February 18, 2013 7:38:14 PM

That minimum number is usually because many get cheap power supplies. The 12v amperage is more important than the actual wattage.
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a c 1195 ) Power supply
February 18, 2013 7:40:46 PM

truwrxtacy said:
thanks alot for the info guys, this 2nd part is just for curiosity. If my card requires minimum power of 500, if i get a 520-550 psu, do i not need to compensate for power needed for my processor/ram?

That Radeon HD 7850 graphics card will draw less than 144 Watts when running FurMark or GPGPU stress testing which represents the worst case power draw scenario for that graphics card.

During gaming the card will be drawing less than 100 Watts.

That leaves the remainder of the power supply's capacity to power the remainder of the system.

I don't see where you're getting this 500 Watt power draw for the graphics card.

Note in my first reply that I refer to the system power supply not the graphics card power supply.
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