Sign in with
Sign up | Sign in
Your question
Solved

Graphics card power requirement help

Last response: in Components
Share
December 31, 2013 2:08:18 AM

I want to buy an Nvidia Geforce GT 630 1GB DDR3. Unsure whether my current power supply unit will do.
PSU specs:
450 Watt
25A@+5V, 10A@+12v, 14A@+3.3v, 1.5A@+5vSB
The Nvidia website says that minimum wattage of PSU should be 300W (and I have 450W). But many forums say that minimum 20A must be there on the 12v rail (and I have 10A). i'm confused.
if possible suggest a cheap external power supply unit for graphics card.
a c 2305 ) Power supply
a c 868 U Graphics card
a b Î Nvidia
December 31, 2013 1:57:16 PM

Your PSU will not run a GT 630

A GeForce GT 630 - needs at least 20A on the 12v rail and a 350W PSU

The Amps on the 12v rail is the key.
m
0
l

Best solution

a c 307 ) Power supply
a c 118 U Graphics card
a b Î Nvidia
December 31, 2013 4:43:54 PM

ramanujan said:
I want to buy an Nvidia Geforce GT 630 1GB DDR3. Unsure whether my current power supply unit will do.
PSU specs:
450 Watt
25A@+5V, 10A@+12v, 14A@+3.3v, 1.5A@+5vSB
The Nvidia website says that minimum wattage of PSU should be 300W (and I have 450W). But many forums say that minimum 20A must be there on the 12v rail (and I have 10A). i'm confused.
if possible suggest a cheap external power supply unit for graphics card.


Hi - You are encountering the issue with older PSU designs that put a lot of the PSU's total capacity on the
+5v & +3.3v rails. The problem with that is, your CPU, GPU, HDD, etc draw their current from the +12v rails.

So, it's as Blackbird says above, you are way short of the +12v amps needed to run a system with a gt630.



Share
December 31, 2013 7:02:02 PM

Thanks all of you for the quick help. :-)
m
0
l
!