Well occording to this review the seasonic S12 600 watt power supply had no
troubles powering a double 7800 gtx graphics card sli setup.

http://pureoverclock.com/review.php?id=15&page=1

Small wie

So at least the amperage stuff shouldn't be of any concern anymore woeh.

Bye,
Skybuck.


"Skybuck Flying" wrote in message news:...
Hello,

On this power supply calculator it says:

http://extreme.outervision.com/index.jsp

The 7800GTX needs about 118 watts of power.
The 7800GT needs about 97 watts of power.

Somewhere else I also read

Current = Watts / Voltage.

Since these cards are supposed to be powered by a single 12v+
rail/connector
(?) this would mean the amperage is about:

118 / 12 = 9.8 amperage.
97 / 12 = 8.0 amperage.

So a power supply delivering 18A on each 12v+ rail should be enough ???

However I have seen many threads say at least 18A or even 24A...

So I am a bit confused...

How much amperage/ampere do these cards really need ??

Bye,
Skybuck.