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Minimum Power Supply for 4870...yes i've researched, down to specifics now

H

Hellotalkie

Golden Member
I finally got a new computer, a gateway for cheap (300)
has a q9300
4gbs ram
1 hard drive
dvd rom etc

although the big part im adding is the 4870
I was going to take out the FSP group PSU i bought a couple years back from my old computer into the new gateway to support the hd4870 512mb.
The problem is, i keep looking up reviews, and it keeps going both ways, no and yes, 450w is not enough, or it is.

question
Is my FSP Group PSU 450w enough to power this system safely?

pretty sure this is the psu http://www.newegg.com/Product/Produc...82E16817104954
looks newer but pretty much the same.



Moved to PSU forum.

Video Mod BFG10K
 
Last edited by a moderator:
I finally got a new computer, a gateway for cheap (300)
has a q9300
4gbs ram
1 hard drive
dvd rom etc

although the big part im adding is the 4870
I was going to take out the FSP group PSU i bought a couple years back from my old computer into the new gateway to support the hd4870 512mb.
The problem is, i keep looking up reviews, and it keeps going both ways, no and yes, 450w is not enough, or it is.

question
Is my FSP Group PSU 450w enough to power this system safely?

pretty sure this is the psu http://www.newegg.com/Product/Produc...82E16817104954
looks newer but pretty much the same.
 
I finally got a new computer, a gateway for cheap (300)
has a q9300
4gbs ram
1 hard drive
dvd rom etc

although the big part im adding is the 4870
I was going to take out the FSP group PSU i bought a couple years back from my old computer into the new gateway to support the hd4870 512mb.
The problem is, i keep looking up reviews, and it keeps going both ways, no and yes, 450w is not enough, or it is.

question
Is my FSP Group PSU 450w enough to power this system safely?

pretty sure this is the psu http://www.newegg.com/Product/Produc...82E16817104954
looks newer but pretty much the same.
 
I am going to have to say no, that isn't good enough.

That is a 400W continuous power supply...only 450W peak, which means it can't sustain 450W for long.

Only 324W available for 12V. It has a dual 12V OCP design too with 14A and 13A. Usually with those dual 12v designs the CPU connector is on one output and everything else is on the other output. My guess is the CPU is the 13A(156W) and everything else is on the 14A(168W) output. That means you are going to have to try to run your SATA drives, your fans and the videocard from 168W. The HD4870 can use 130W all by itself.

I'd say it might work, but you will certainly be bumping your head. You would be much better off going and getting a more capable PSU.
 
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