power supply for hd3850

by Cnfys • 13 Dec 2007, 17:32 • Journals
i've got 2 power supplies at home , which one should a take for my hd3850

1.model atx -400w +12v= 16A

2. 300w +12v= 18A

or are none of them good enough ?
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13
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Echo 13 Dec 2007, 17:35
1 is the best ofc
should be enough, depends on amount of harddrives and other hardware though
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spion 13 Dec 2007, 17:38
why obvious?
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Echo 13 Dec 2007, 17:40
more watt right? and since he doesn't mention any brands, the first one seems better to me
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Cnfys 13 Dec 2007, 17:51
but the discription says: red +5v 25A , orange bla ....
but 1 plug consists of yellow, red ,black or orange green blue white etc, how can i know which plug is which V. ?
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Echo 13 Dec 2007, 18:01
how old are both psu's?
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Cnfys 13 Dec 2007, 18:24
the 300wat is 3 year i guess, the 400 is not used yet but is 1 year old
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Echo 13 Dec 2007, 18:51
probeer de 400 watt

er moet voor die videokaart namelijk wel een pci-e aansluiting op je voeding zitten en volgens mij hadden ze dat 3 jaar geleden nog niet.

als de pc niet goed opstart met die voeding dan zou ik gewoon een nieuwe kopen, is ook niet zo heel duur
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spion 13 Dec 2007, 17:52
the 300watt one got more ampere! \o/
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reviAn 13 Dec 2007, 17:39
take the 1. one..
will be work fine imo?!
god lak
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Assassin 13 Dec 2007, 17:42
400w wont be enough, i think
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peoples 13 Dec 2007, 18:55
P = I*V
P is the power (watt or W)
I is the current (ampere or A)
V is the potential difference (volt or V)

1. 16A * 12V = 192W
2. 18A * 12V = 216W

It might well be that it won't work on either of those. Since you didn't tell the make or model, which weigh much on such comparison. Some shitty ping-pong 600W power might be outgunned by a good 450W PSU.

If you decide to get a new PSU:
Corsair HX520 / VX450/VX550
Seasonic M12 / Antec EarthWatts
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aCoZz 13 Dec 2007, 19:07
I don't know the rest of his configuration, but Corsair VX450 should be more than enough for hd3850, everything else is an overkill.

I have vx450, which is atm probably the best price/performance PSU, you can check my configuration @ profile..
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