7790 power requirement?

[mojothehut]

Hey all
I'm looking at buying http://www.powercolor.com/us/products_features.asp?id=462#Specification and notice that it wants a 500watt psu?

It's for a budget machine pared with an i5 3550 and 8gb of DDR1600.
Right now I have an antec 430watt psu. So will I have to upgrade my psu to go along with this card? I thought the 7000 line, esp the lower end 7700s were quite light on power usage?

 

[Erenhardt]

Your PSU should be enough.
This GPU is preety efficient:
http://www.techpowerup.com/reviews/XFX/HD_7790_Black_Edition_OC/24.html
7950 also have min 500W PSU req. but takes good 80W more
http://www.powercolor.com/us/products_features.asp?id=389#Specification

 

[Jimzz]

I agree, you should be fine. Your 430 is more efficient than many 500watts anyways.

 

[toyota]

a pc with a stock 3550 and stock 7790 would never even pull 225 watts so unless that is a worn out entry level Antec 430 watt unit then you are fine.

it seems everyone in this thread is under the impression that there is only one Antec line.

 

[mojothehut]

Heya,
Actually I have a Corsair 430watt

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

this one to be exact

 

[RU482]

I almost wonder if that "500W minimum" is just a round about way to weed out people from trying to stick this card in a Dell/HP w/cheapo 350W PSU, that will inevitably have problems

 

[mojothehut]

So the psu I linked will be just fine then?
=)

 

[toyota]

Heya,
Actually I have a Corsair 430watt

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

this one to be exact

So the psu I linked will be just fine then?
=)

its their lower end range with somewhat cheaper parts but for your needs its more than adequate.

 

[tincart]

I have a 7790 running at 1200/1600 with a 450W PSU.

 

[toyota]

I have a 7790 running at 1200/1600 with a 450W PSU.

you know that means almost nothing at all. you say nothing about the rest of the pc or even mention what "450W PSU" that you have.

 

[Stuka87]

Which 430W PSU? I had an Antec 430W Basiq and it *Barely* was enough for a 7750 and a Phenom II 550BE. The 12V rail is very wimpy on it. When I put a 965BE in it started crashing.

 

[toyota]

Which 430W PSU? I had an Antec 430W Basiq and it *Barely* was enough for a 7750 and a Phenom II 550BE. The 12V rail is very wimpy on it. When I put a 965BE in it started crashing.

he already mentioned and linked to the actual psu and its Corsair CX430.

and yeah your Antec 430 watt psu is not one I would consider for long term use with any pc that uses much more than 200 watts.

 

[Stuka87]

he already mentioned and linked to the actual psu and its Corsair CX430.

and yeah your Antec 430 watt psu is not one I would consider for long term use with any pc that uses much more than 200 watts.

Oops, missed that he posted it.

And yeah, it sucked. I didn't even bother selling it when I replaced it. I just kept it for an emergency spare, and then eventually tossed it.

 

[Rezist]

I ran a 4850 and athlon II dual core with the same PSU so it should easily pull it off assuming the PSU's didnt change much in 3-4 years.

 

[rancherlee]

I've got a 550 BE @ 3.8 and a 5770 OC'd running off an old Thermaltake 430w and its just fine. Weak 12v on this one too. My 5770 draws a decent amount more juice than a 7790 would.