Upgrading from 8800GT to 560 Ti GTX - Worried About PSU (Earthwatts EA-500D)

[crellion]

Hi Everyone,

I have decided it might be time to retire my 8800GT and replace it with its vastly superior descendant - the 560 Ti GTX...

I am concerned though whether my PSU can cope with this without bringing my entire computer crashing down.

Here's my PSU:

ANTEC Earthwatts EA-500D
Voltage = Max Load
+5V = 24A
+3.3V = 24A
+12V1 = 22A
+12V2 = 22A
-12V = 0.8A

I know that the 560 Ti GTX requires a 500watt as a minimal, but I'm not really clear about its AMP requirements.

That being said - does my current PSU suffice for this? I don't want to spend more dough on the PSU just so I can upgrade to the 560 TI GTX...

I might have to upgrade my PSU in the next-next GPU generation, but I want to hold out as long as I can with my current PSU...


Moved to PSU forum.

Super Moderator BFG10K.

 

[happy medium]

You will be fine. Welcome to the forums.

 

[crellion]

You will be fine. Welcome to the forums.

Thanks - that's good to know as I'm getting ready to purchase it 🙂

BTW - how exactly do I read these AMP requirements anyways - cause even though I wrote my PSU's AMP specs out, I don't know how to compare it with the 560 Ti GTX's power requirements...

For example, I looked at the Sparkle 560 Ti GTX (http://www.newegg.com/Product/Produ...87136&cm_re=gtx_560_ti-_-14-187-136-_-Product) and it said Minimum 500W or greater system power supply (with a minimum 12V current rating of 24A).

I think my PSU has dual 12V rails, so how does that work...

 

[happy medium]

22 amp would be equal to 12 x 22 = 264 watts.
Now you have 2 ,22 amp rails so its 44 x 12 = 528 watts for the video card, motherboard, and harddrives.

gtx 560 = about 160 watts
typical cpu = 100 watts (150 overclocked)
motherboard and harddrives mabe 50 watts
case fans mabe 20 watts.,

Even though you have 2 rails, most of the time if you combine them it outputs less amps.
So typically a psu with 2 rails at 22 amps each, will not output a total of 44 amps, you will get more like 38 total amps depending on the psu.

Even at 38 amps you have more then enough. 38 x 12 = 456 watts

 

[edplayer]

22 amp would be equal to 12 x 22 = 264 watts.
Now you have 2 ,22 amp rails so its 44 x 12 = 528 watts for the video card, motherboard, and harddrives.

that is not how it works.

You want to look at the combined 12V rating which on that model is 444W which equals 37A

 

[Denithor]

Not how it works but you'll still be fine. I had two GTX 260s running F@H on an EA500 with zero problems for quite a few months. Trust me, you won't have issues!

Enjoy the 560!!

 

[tomoyo]

Also you're not upgrading to an extremely high power video card. I think the 560 requires 2 6pin pci connectors, but probably only goes up to around the 200w mark. You should still have over 100w of headroom.