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Will I need a better power supply?

Last response: in Components
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April 5, 2012 11:52:42 PM

Hi, I'm currently running this:
i5-2500k @ 3.3 Ghz CPU
4GB DDR3 RAM
1 x DVD Player
AMD Radeon 7770 HD Graphics Card
ASUS P8Z68-V LX Motherboard
600W XFX Power Supply

I'm considering upgrading and buying a second AMD 7770 and running them in crossfire. Am I going to need to upgrade my power supply as well?
Thanks

More about : power supply

a b ) Power supply
April 6, 2012 12:01:37 AM

Hi :) 

Yes....

All the best Brett :) 
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a b ) Power supply
April 6, 2012 12:09:59 AM

No, not nearly, that card pulls 80w at full bore. XFX units are not the best but I have no idea why anyone would recommend getting anew one.
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a b ) Power supply
April 6, 2012 12:16:03 AM

cuecuemore said:
No, not nearly, that card pulls 80w at full bore. XFX units are not the best but I have no idea why anyone would recommend getting anew one.



Hi :) 

Crossfire ???

All the best Brett :) 
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a b ) Power supply
a b À AMD
April 6, 2012 12:24:51 AM



less than 400w on a system with a much more power hungry cpu.
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a c 243 ) Power supply
April 6, 2012 12:28:04 AM

Atomichearse said:
Hi, I'm currently running this:
i5-2500k @ 3.3 Ghz CPU
4GB DDR3 RAM
1 x DVD Player
AMD Radeon 7770 HD Graphics Card
ASUS P8Z68-V LX Motherboard
600W XFX Power Supply

I'm considering upgrading and buying a second AMD 7770 and running them in crossfire. Am I going to need to upgrade my power supply as well?
Thanks

XFX doesn't provide a 600 watt psu, 550, 650 and 750 watt versions are available.
Even the 550w would be sufficient for your system specs
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Best solution

a c 1200 ) Power supply
a b À AMD
April 6, 2012 12:36:32 AM

For a system using two Radeon HD 7770 graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 600 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply adequacy determination!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.

Since you don't really have an 600W PSU:

The XFX 550W PSU, with its combined +12 Volt continuous current rating of 44 Amps and with two 6-pin and two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two Radeon HD 7770 graphics cards in 2-way CrossFireX mode.

The XFX 650W PSU, with its combined +12 Volt continuous current rating of 53 Amps and with two 6-pin and two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two Radeon HD 7770 graphics cards in 2-way CrossFireX mode.


Since your power supply must be one of the following:

The Corsair Builder Series CX600 V2 (CMPSU-600CXV2), with its combined +12 Volt continuous current rating of 40 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with with two Radeon HD 7770 graphics cards in 2-way CrossFireX mode.

The Corsair Gaming Series GS600 (CMPSU-600G), with its combined +12 Volt continuous current rating of 48 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with with two Radeon HD 7770 graphics cards in 2-way CrossFireX mode.
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April 6, 2012 12:59:10 AM

Excuse me, I put the wrong brand. XFX is the brand of the 7770 that I bought. The power supply is Corsair.
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April 6, 2012 1:01:20 AM

Corsair is a really good brand of psu. That being the case, i would say stick with what you have.
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April 6, 2012 1:38:22 AM

Ok thanks. If I were to stick with my current PSU and buy the second 7770, how much headroom would I have for other future increases in power usage like overclocking or another hard drive?
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April 6, 2012 1:47:02 AM

Best answer selected by Atomichearse.
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a c 243 ) Power supply
April 6, 2012 1:49:14 AM

Atomichearse said:
Ok thanks. If I were to stick with my current PSU and buy the second 7770, how much headroom would I have for other future increases in power usage like overclocking or another hard drive?


Atomichearse said:
Excuse me, I put the wrong brand. XFX is the brand of the 7770 that I bought. The power supply is Corsair.

Don't know which 600w you have, CX ( 40a ) or GS ( 48a ) , either will power a Crossfire 7770 system, with plenty of room for overclocking and extra HD's
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July 8, 2012 2:55:30 PM

Intel Core I5 3.30GHZ
4gb Kingston Ram
ASUS P8Z68-V LX Mother
1 x DvD Player
ASUS GTX 560 Ti DirectCU II TOP
500GB HardDrive
600w Silverstone


I'm considering buying a Water Cooler(KU3-241) It say only 10.8w needed. Should i upgrade to better power supply?
Thank
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a b ) Power supply
a b À AMD
July 12, 2012 6:50:17 AM

amd raedon 7770 need a 650W psu to run in crossfire mode,check out the amd official site for full specs
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a c 1200 ) Power supply
a b À AMD
July 12, 2012 4:32:03 PM

sourodip said:
amd raedon 7770 need a 650W psu to run in crossfire mode,check out the amd official site for full specs

I don't know what you're looking at.

The official AMD Radeon™ HD 7770 GHz Edition - System Requirements tab page clearly shows:

• 600W power supply (or greater) with two 75W 6-pin PCI Express power connectors recommended for AMD CrossFire™ technology.

http://www.amd.com/us/products/desktop/graphics/7000/77...
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