Sign in with
Sign up | Sign in
Your question

Power supply advice

Last response: in Components
Share
October 24, 2012 1:53:40 PM


Hi,

I have recently upgraded my PC as cheaply as i could but i'm worried about the amount of amps on my 12v rails.

This is a link to the PSU http://www.silentpcreview.com/article610-page1.html. Its a Enermax EG701AX-VE(W)SFMA V2.0 600 Watt PSU

It probably was a good PSU in its day but I bought it without realising how old it was and how low the amps are on the rails.... Dumb I know but i'm new to this....

So my question is will it run a 550ti? The requirements on the box say minimum of 400w and 24 amp on 12v rail.
But obviously I only have 22 amp and the 550ti only has one 6 pin connector.

Would it be better to get one of these connectors http://www.maplin.co.uk/pci-express-power-converter-468... to plug into the graphics card? Does that mean it will be a total of 44 amps? Not entirely sure how these things work. Or should i just run it off the 6 pin connector that comes out of the psu?

Any advice would be much appreciated.


More about : power supply advice

a b ) Power supply
October 24, 2012 2:15:44 PM

Page not found - Silent PC
a c 137 ) Power supply
a c 260 U Graphics card
October 24, 2012 2:15:53 PM

Your link to the spcr review did not work for me.
I think it should be:
http://www.silentpcreview.com/article221-page1.html

Not to worry.
Enermax is generally a decent quality psu.
It has a 6 pin pci-e connector which is what your card needs.
The psu recommendations are a general recommendation which includes the power needed for the rest of the pc, assuming a normal complement of peripherals.
Any decent quality psu will deliver sufficient power to any pci-e leads it provides.
My reading of the data plate says the psu can deliver 35a. That is nominal for a 600w psu, although most such modern units will supply two 6 or 6+2 pcie connectors.

You are good.
Related resources
a b ) Power supply
October 24, 2012 2:17:29 PM

Found it elsewhere. Looks... questionable. I'd rather not run it!
a b U Graphics card
October 24, 2012 2:20:55 PM

OK, in "THEORY" the card will run on that PSU (i cant se the link from work, but i checked another review), but you will probably get stability issues at demanding games.

Worst case scenario, the GPU will get damaged due to underpowered 12v rail.

I would suggest getting a better PSU just for security, since i did kill once my 6600 GT nvidia with an old PSU, and you basicly learn "not to" save up cash on the PSU.

How old is the PSU? I mean, it has 5 year of workload behind it or its a 5 year old model ?

As far as i know, you need the sum of th AMPs in the 12V rail to be 20% higher than the sum of all amps your PC will need on the 12V rail in order to be really safe.

So you sum the CPU amps, the gpu amps, the 12V fans/leds, etc, and then you add a 20%.

But you can perfectly have even less than the sum and work well (ofc peaks of load might stress your PSU in those cases).

Final note: While you can get by with a weaker PSU, note that 700W PSU will run significantly hotter and louder at 700W than a 1000W PSU at 700W. This heat also reduces lifespan.


a c 283 ) Power supply
a c 113 U Graphics card
October 24, 2012 2:22:04 PM

jsayers88 said:
Hi,

I have recently upgraded my PC as cheaply as i could but i'm worried about the amount of amps on my 12v rails.

This is a link to the PSU http://www.silentpcreview.com/article610-page1.html. Its a Enermax EG701AX-VE(W)SFMA V2.0 600 Watt PSU

It probably was a good PSU in its day but I bought it without realising how old it was and how low the amps are on the rails.... Dumb I know but i'm new to this....

So my question is will it run a 550ti? The requirements on the box say minimum of 400w and 24 amp on 12v rail.
But obviously I only have 22 amp and the 550ti only has one 6 pin connector.

Would it be better to get one of these connectors http://www.maplin.co.uk/pci-express-power-converter-468... to plug into the graphics card? Does that mean it will be a total of 44 amps? Not entirely sure how these things work. Or should i just run it off the 6 pin connector that comes out of the psu?

Any advice would be much appreciated.


Hi - No the adapter doesn't increase amps. I'm sure one or more of the experts/addicts will check in, but from what I could see (reviews from 2005) you should be
fine with this PSU running that GPU. The PSU's +12v amps are split, but look to be OK for that card.
Run the card with the connector from the PSU, you don't need an adapter.

Tom
a c 283 ) Power supply
a c 113 U Graphics card
October 24, 2012 2:24:27 PM

jsayers88 said:
Hi,

I have recently upgraded my PC as cheaply as i could but i'm worried about the amount of amps on my 12v rails.

This is a link to the PSU http://www.silentpcreview.com/article610-page1.html. Its a Enermax EG701AX-VE(W)SFMA V2.0 600 Watt PSU

It probably was a good PSU in its day but I bought it without realising how old it was and how low the amps are on the rails.... Dumb I know but i'm new to this....

So my question is will it run a 550ti? The requirements on the box say minimum of 400w and 24 amp on 12v rail.
But obviously I only have 22 amp and the 550ti only has one 6 pin connector.

Would it be better to get one of these connectors http://www.maplin.co.uk/pci-express-power-converter-468... to plug into the graphics card? Does that mean it will be a total of 44 amps? Not entirely sure how these things work. Or should i just run it off the 6 pin connector that comes out of the psu?

Any advice would be much appreciated.


Hi again - agree with geofelt - you should be good to go.

Tom
October 24, 2012 2:39:32 PM

Sorry that link didn't work, its actually the rev.2 so more amps than the link you posted.
Will link it again http://www.silentpcreview.com/article610-page1.html
Its because the period at the end was added into the link.....!

Thanks for the quick replies. I think i will go for it based on the advice and that the rest of my rig is not very power demanding at all.

I'll let you know how I get on with it over the next few days as i'm still waiting for the psu yet.

To answer your question cats_paw I can only assume it has had 5 years of use as I don't know any better although it looks immaculate. Then again that doesn't really mean anything! I will also do some calculations so i know exactly how many watts i will be using.

Thanks again
!