Want to Crossfire 2x Power Color 6950 1GB need suggestions for Power Supplies?

Toggle sidebar Toggle sidebar
chemical khan

chemical khan

Honorable
Jul 25, 2012
6
0
10,510
Hello Everyone.. as the title says want to try crossfire..
one Power Supply which is already in consideration is FSP EPILSON 900W (80+) its on a deal like 60$.
I know 900W supply is more than enough for these cards but i have seen somewhere that AMP are also critical specially for Multi-GPU stuff.
it has 4 12V rails (V1 = 20A, V2 = 25A, V3 = 20A, V4 = 25A).. is that enough? and also if you guys could suggest me a better option/Supply.. any help would be great.. Thanks. :)



 
Solution
yeskay


Minimum Recommended PSU for 6950 Crossfire is 700W. So consider this 750W quality PSU with 62A on single +12V rail:

PCPartPicker part list / Price breakdown by merchant

Power Supply: Corsair CSM 750W 80+ Gold Certified Semi-Modular...
Sort by date Sort by votes
chemical khan

chemical khan

Honorable
Jul 25, 2012
6
0
10,510


x2 6950's .. 49 $ Each.. i think its good value for money +they scale well and crossfire performance is close to 6990 @1080P (I Had R9 280X but he is in good place now RIP, waiting for AMD 3xxx)..........

On Power Supply .. Max Combine wattage on 12V is "675 Watts"
 
Upvote 0 Downvote
yeskay

yeskay

Distinguished
Jul 12, 2014
1,258
0
20,460


Minimum Recommended PSU for 6950 Crossfire is 700W. So consider this 750W quality PSU with 62A on single +12V rail:

PCPartPicker part list / Price breakdown by merchant

Power Supply: Corsair CSM 750W 80+ Gold Certified Semi-Modular ATX Power Supply ($84.98 @ Newegg)
Total: $84.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-24 04:32 EDT-0400

When you're going for Multi-GPU setup, it's better to go for single +12V rail that has beefy Amps like this one has.
CSM750_sideview_cable.png


Corsair CS750M ATX Power Supply

AC Input Rating DC Output Rating
AC Input: 100V - 240V DC Output +3.3V +5V +12V -12V +5Vsb
Current: 10 - 5A Max Load 25A 25A 62A 0.8A 3.0A
Frequency: 47Hz - 63Hz Maximum Combined Wattage 130W 744W 9.6W 15W
Total Power: 750W

Cheers!
 
Upvote 1 Downvote
Solution
yeskay

yeskay

Distinguished
Jul 12, 2014
1,258
0
20,460


The Corsair CSM 750W 80+ Gold that I suggested has a Max Combine wattage of 744W on +12V rail.

 
Upvote 0 Downvote
yeskay

yeskay

Distinguished
Jul 12, 2014
1,258
0
20,460


None of those four +12V rails of FSP meet the required Amps for 6950. As the single 6950 need a minimum 30A on a single +12V rail. The Corsair that I suggested has pretty good 65A on single +12V rail that would provide enough power for the 6950 Crossfire GPUs.[/b]

Cheers!
 
Upvote 1 Downvote
chemical khan

chemical khan

Honorable
Jul 25, 2012
6
0
10,510
[/quotemsg]

Minimum Recommended PSU for 6950 Crossfire is 700W. So consider this 750W quality PSU with 62A on single +12V rail:

PCPartPicker part list / Price breakdown by merchant

Power Supply: Corsair CSM 750W 80+ Gold Certified Semi-Modular ATX Power Supply ($84.98 @ Newegg)
Total: $84.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-24 04:32 EDT-0400

When you're going for Multi-GPU setup, it's better to go for single +12V rail that has beefy Amps like this one has.
CSM750_sideview_cable.png


Corsair CS750M ATX Power Supply

AC Input Rating DC Output Rating
AC Input: 100V - 240V DC Output +3.3V +5V +12V -12V +5Vsb
Current: 10 - 5A Max Load 25A 25A 62A 0.8A 3.0A
Frequency: 47Hz - 63Hz Maximum Combined Wattage 130W 744W 9.6W 15W
Total Power: 750W

Cheers![/quotemsg]

Thanks alot man for all the help and input... I will probably get this one.. cheers. :)

 
Upvote 0 Downvote
yeskay

yeskay

Distinguished
Jul 12, 2014
1,258
0
20,460


Minimum Recommended PSU for 6950 Crossfire is 700W. So consider this 750W quality PSU with 62A on single +12V rail:

PCPartPicker part list / Price breakdown by merchant

Power Supply: Corsair CSM 750W 80+ Gold Certified Semi-Modular ATX Power Supply ($84.98 @ Newegg)
Total: $84.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-24 04:32 EDT-0400

When you're going for Multi-GPU setup, it's better to go for single +12V rail that has beefy Amps like this one has.
CSM750_sideview_cable.png


Corsair CS750M ATX Power Supply

AC Input Rating DC Output Rating
AC Input: 100V - 240V DC Output +3.3V +5V +12V -12V +5Vsb
Current: 10 - 5A Max Load 25A 25A 62A 0.8A 3.0A
Frequency: 47Hz - 63Hz Maximum Combined Wattage 130W 744W 9.6W 15W
Total Power: 750W

Cheers![/quotemsg]

Thanks alot man for all the help and input... I will probably get this one.. cheers. :)

[/quotemsg]

You're Welcome!
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom