Voltage rail ratings?

Dual_Corex2

Dual_Corex2

banned
Ok, well, since i just got my new Antec 550watt PSU, i think im ready to upgrade my video card. Im looking at getting the 8600GTS, but i can afford an 8800GTS ($280).

My question is, my old PSU only had 1 12v rating, this one has 3. They are all 18A. Does this mean i add all 3 of them together to get 54A? Newegg says the card requires 26A....so is my PSU enough for a single 8800GTS? How much headroom would there be for overclocking anything? Right now i cant get my CPU to go past 210mhz FSB no matter what....so i dont think i will OC my CPU, but if the card overclocks sure why not.

Also, can anyone help me understand more about why there is 3 12v ratings?
 
Bradan said:
you dont add them

id say combine the rails and multiply by .66
Click to expand...

huh, x0.66? where did you get that? anyway, usually the PSU table says how much amp per rail the PSU can put out. but, if there is more than 1 rail of the same voltage, the rails are combined in the table with a wattage total. (meaning, how much Watt the 12Volt rails can put out together at max.)
17-371-002-04.jpg

I think you have this PSU, dont you?
look at the bottom of the table, there it say's +12, +12 and +12 max load: 42A now, I wouldnt push it THAT far tbh (and its rated at 20 or 30 degrees instead of its normal operating temps.) but you should be just fine ;)
 
Ok thanks. No, mine is the Neo HE, but basically the same specs as that one, just cheaper....

So then i can get the 8800GTS?
 
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