I have an OCZ StealthXStream power supply at 500w.
It has 2 12v rails at 18A each. According to EVGA's site their gtx 260 ssc requires 35A of power on a 500w PSU. Now I realize my psu does not exactly meet that standard, so I started looking at other cheap psu's that could handle it. the cheapest looking one is this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817148010
at 34 a. if this is enough it would be a minimal cost in upgrading. If it isnt, I would likely move up to this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341011
A much bigger cost, but would allow for sli of a second 260 later.
The first PSU I listed has one 12v rail with 34A, Just short of the 35 required. Would this suffice, not just the amperage, but say it were a 35A, it only has one rail, would it still have enough power with every other component also running on it?
Now for my real question. I started to realize that the fact that my psu has 2 18A rails may be to my advage when I saw this post:
http://www.hardforum.com/showthread.php?t=1389830
When asked what psu he used for 5 gpu's (2 gtx 295's) and an 8800 gtx, none of which are low power cards, in one computer I went to read the Amperage specs on the one he listed.
they are as follows:
+3.3V@40A,+5V@40A,+12V1@18A,+12V2@18A,+12V3@18A,
+12V4@18A,+12V5@18A,+12V6@18A,-12V@0.8A,+5VSB@3. 5A
It has 6 12v rails and is 1000w, but each rail is only 18A.
This leads me to beleive that my 2 18a rails just might suffice for a single gtx 260, if the 2 rails were added together.
My PSU has one pcie 6 pin connector, maybe I would need to isolate the 2 (4 pin peripheral) adapter that would account for the second pcie plug needed to the second rail.
anyone have any advice on this? It would be great to not have to buy a new psu, as the card is expensive enough as it is.
Thanks
It has 2 12v rails at 18A each. According to EVGA's site their gtx 260 ssc requires 35A of power on a 500w PSU. Now I realize my psu does not exactly meet that standard, so I started looking at other cheap psu's that could handle it. the cheapest looking one is this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817148010
at 34 a. if this is enough it would be a minimal cost in upgrading. If it isnt, I would likely move up to this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341011
A much bigger cost, but would allow for sli of a second 260 later.
The first PSU I listed has one 12v rail with 34A, Just short of the 35 required. Would this suffice, not just the amperage, but say it were a 35A, it only has one rail, would it still have enough power with every other component also running on it?
Now for my real question. I started to realize that the fact that my psu has 2 18A rails may be to my advage when I saw this post:
http://www.hardforum.com/showthread.php?t=1389830
When asked what psu he used for 5 gpu's (2 gtx 295's) and an 8800 gtx, none of which are low power cards, in one computer I went to read the Amperage specs on the one he listed.
they are as follows:
+3.3V@40A,+5V@40A,+12V1@18A,+12V2@18A,+12V3@18A,
+12V4@18A,+12V5@18A,+12V6@18A,-12V@0.8A,+5VSB@3. 5A
It has 6 12v rails and is 1000w, but each rail is only 18A.
This leads me to beleive that my 2 18a rails just might suffice for a single gtx 260, if the 2 rails were added together.
My PSU has one pcie 6 pin connector, maybe I would need to isolate the 2 (4 pin peripheral) adapter that would account for the second pcie plug needed to the second rail.
anyone have any advice on this? It would be great to not have to buy a new psu, as the card is expensive enough as it is.
Thanks