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Crossfiring 5770s on this PSU?

post #1 of 7
Thread Starter 
I own this PSU:

http://www.newegg.com/Product/Produc...-094-_-Product

and I'm wondering if it could take a second 5770 without needing to upgrade my PSU. If it can't, what is the most powerful card my rig can take? The rig in question is my sig rig.
    
CPUMotherboardGraphicsRAM
i7 950 4.41 GHz 1.36V 24/7 5.00 GHz 1.568V HT ON Asus Sabertooth X58 Sapphire Radeon 5770 4GB G Skill Ripjaws DRR3 1600 @ 1685 
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CPUMotherboardGraphicsRAM
i7 950 4.41 GHz 1.36V 24/7 5.00 GHz 1.568V HT ON Asus Sabertooth X58 Sapphire Radeon 5770 4GB G Skill Ripjaws DRR3 1600 @ 1685 
Hard DriveOptical DriveOSMonitor
Western Digital Caviar Blue 320GB Sata III HDD LITE-ON 24X DVD Writer Windows 7 Ultimate AOC 20" 
KeyboardPowerCaseMouse
Logitech MX 3200 SeaSonic 520w NZXT M59 Roccat Kone[+] 
Mouse Pad
Padless! 
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post #2 of 7
5770's don't use much power at all. It should be fine imho.
post #3 of 7
Should be fine, thats a nicely made PSU.
post #4 of 7
Thread Starter 
sweet! I sense an epic system upgrade coming
    
CPUMotherboardGraphicsRAM
i7 950 4.41 GHz 1.36V 24/7 5.00 GHz 1.568V HT ON Asus Sabertooth X58 Sapphire Radeon 5770 4GB G Skill Ripjaws DRR3 1600 @ 1685 
Hard DriveOptical DriveOSMonitor
Western Digital Caviar Blue 320GB Sata III HDD LITE-ON 24X DVD Writer Windows 7 Ultimate AOC 20" 
KeyboardPowerCaseMouse
Logitech MX 3200 SeaSonic 520w NZXT M59 Roccat Kone[+] 
Mouse Pad
Padless! 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 950 4.41 GHz 1.36V 24/7 5.00 GHz 1.568V HT ON Asus Sabertooth X58 Sapphire Radeon 5770 4GB G Skill Ripjaws DRR3 1600 @ 1685 
Hard DriveOptical DriveOSMonitor
Western Digital Caviar Blue 320GB Sata III HDD LITE-ON 24X DVD Writer Windows 7 Ultimate AOC 20" 
KeyboardPowerCaseMouse
Logitech MX 3200 SeaSonic 520w NZXT M59 Roccat Kone[+] 
Mouse Pad
Padless! 
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post #5 of 7
5770 CF uses 396 watts on full load and 173 on idle so it wouldn't hurt to bump your self up to 600 for some extra lee-way.
     
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Intel Core i7-4870HQ @ 2.5 GHz (Turbo @ 3.7 GHz) Apple Logic Board Nvidia GeForce GT 750M 2GB 16 GB 1600 MHz DDR3 
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APPLE SSD SM0512F 500GB macOS Sierra 15" Retina Display (2880 x 1800) Full-size backlit keyboard with 78 (U.S.) keys 
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85W Magsafe 2 Precision Aluminum Unibody Multi-Touch Trackpad Focusrite Scarlett 2i4 2nd Gen 
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Intel Core i5-3317U @ 1.7GHz (Turbo @ 2.6 GHz) Intel HD Graphics 4000 4 GB 1600 MHz DDR3L SDRAM APPLE SSD TS128E 
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macOS Sierra 11.6" LCD/LED Backlit IPS Display (1366 x 768) Full-size backlit keyboard with 78 (U.S.) keys 85W Magsafe 2 
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CPUMotherboardGraphicsRAM
Intel Core i7-4870HQ @ 2.5 GHz (Turbo @ 3.7 GHz) Apple Logic Board Nvidia GeForce GT 750M 2GB 16 GB 1600 MHz DDR3 
Hard DriveOSMonitorKeyboard
APPLE SSD SM0512F 500GB macOS Sierra 15" Retina Display (2880 x 1800) Full-size backlit keyboard with 78 (U.S.) keys 
PowerCaseMouseAudio
85W Magsafe 2 Precision Aluminum Unibody Multi-Touch Trackpad Focusrite Scarlett 2i4 2nd Gen 
CPUGraphicsRAMHard Drive
Intel Core i5-3317U @ 1.7GHz (Turbo @ 2.6 GHz) Intel HD Graphics 4000 4 GB 1600 MHz DDR3L SDRAM APPLE SSD TS128E 
OSMonitorKeyboardPower
macOS Sierra 11.6" LCD/LED Backlit IPS Display (1366 x 768) Full-size backlit keyboard with 78 (U.S.) keys 85W Magsafe 2 
CaseMouse
Precision Aluminum Unibody Multi-Touch Trackpad 
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post #6 of 7
Quote:
Originally Posted by EpicPie View Post
5770 CF uses 396 watts on full load and 173 on idle so it wouldn't hurt to bump your self up to 600 for some extra lee-way.
Those numbers are from Legit Reviews, right? Those load numbers are with Furmark, which games don't even reach.

AMD recommends a 600W for 5770 CF, 5850 CF, and 5870 CF. That Seasonic provides 480W combined power on the +12v rail with 40A. 40A on the +12v rail is equivalent to most 600W PSUs on the market.
post #7 of 7
Yes you should be ok with that
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