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Corsair CX 750W good enough for HD 7950 CrossfireX?

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Well I was going to build a brand new rig though that's not going to happen now, I have however decided to treat myself to a new PSU, case and mechanical keyboard.

Just looking to get some input to the PSU
Corsair CX 750W CP-9020015-UK
is good enough for dual 7950's and overclocked i5 2500k.

My initial thought is yes, definately as it's a Corsair unit and has a single 62a +12v rail ( 744w ) as well as 4x 6+2 pcie cables, my only reservation is that I know their newer budget/builder range wasn't rated as high as the previosu versions, though 750w Corsair PSU should be fairly adequate shouldn't it?
 
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I pull a bit above 700 watts full load with 2 x 7970's and a 3770K highly overclocked. You should be good.
 
Joined
Apr 21, 2010
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5,731 (1.13/day)
Location
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System Name Ryzen Reynolds
Processor Ryzen 1600 - 4.0Ghz 1.415v - SMT disabled
Motherboard mATX Asrock AB350m AM4
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Memory Vulcan T-Force 16GB DDR4 3000 16.18.18 @3200Mhz 14.17.17
Video Card(s) Sapphire Nitro+ 4GB RX 580 - 1450/2000 BIOS mod 8-)
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XS PSU calculator is saying 519w even with CPU OC, I think 750w should be highly sufficient, just want to make sure the Corsair CX (builder) series are up to the task, mind you I ran an 4GHZ overclocked E7300 and dual HD 4850's on a HX 520w for a good while :toast:
 
Joined
May 14, 2009
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2,132 (0.39/day)
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System Name Halloween Boo!
Processor Intel Core i7 3770K
Motherboard Gigabyte Z77-Up7
Cooling Custom Water/ Thermalchill TA 120.3/ Swiftech Apogeee XT/ MCP655/ Swiftech M icrores/ XSPC RX 240
Memory 16G G.Skill trident 2400MHz
Video Card(s) 3 x Radeon 7970
Storage OCZ Revo Drive 240G
Display(s) 24 inch Viewsonic
Case Phobia WayCoolIt Test Bench
Power Supply Nexus 1100 watt
XS PSU calculator is saying 519w even with CPU OC, I think 750w should be highly sufficient, just want to make sure the Corsair CX (builder) series are up to the task, mind you I ran an 4GHZ overclocked E7300 and dual HD 4850's on a HX 520w for a good while :toast:

PSU calculators are bullshit anyhow. It really boils down to how many amps the rail(s) put out. Some PSU's boast amps they don't turn out. Your specs are not comparing apples to apples with your power consumption. My specs pull more than his(more) so he will be good to go.
 
Joined
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Messages
5,731 (1.13/day)
Location
West Midlands. UK.
System Name Ryzen Reynolds
Processor Ryzen 1600 - 4.0Ghz 1.415v - SMT disabled
Motherboard mATX Asrock AB350m AM4
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Memory Vulcan T-Force 16GB DDR4 3000 16.18.18 @3200Mhz 14.17.17
Video Card(s) Sapphire Nitro+ 4GB RX 580 - 1450/2000 BIOS mod 8-)
Storage Seagate B'cuda 1TB/Sandisk 128GB SSD
Display(s) Acer ED242QR 75hz Freesync
Case Corsair Carbide Series SPEC-01
Audio Device(s) Onboard
Power Supply Corsair VS 550w
Mouse Zalman ZM-M401R
Keyboard Razor Lycosa
Software Windows 10 x64
Benchmark Scores https://www.3dmark.com/spy/6220813
PSU calculators are bullshit anyhow. It really boils down to how many amps the rail(s) put out. Some PSU's boast amps they don't turn out.

it has a single +12v rail of 62a (744w) compared to an Antec VP550w I bought as an interim for 1 7950 which only had 37a (444w) on the +12v rail, I fricken hate PSU's that are over-rated only to find the +12v lacking and them making it up in 3.3v and 5v ..... BASTARDS :shadedshu
 
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