Do I have enough power?

Roach

Roach

Roach

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Joined
16 Sep 2012
Posts
12
So I have almost got all my list delivered, and having changed the GFX card at the last minute I've seen it has a 600w power draw, unless I'm reading it wrong?

Will the AX750 be enough or should I upgrade to the 850 or even higher?

Here's my setup:


Samsung 840 Series 250GB 2.5 inch SATA Solid State Drive

Sony AD-5280S-0B DVD±RW 24x SATA Drive with Dust Protected Enclosure and Emergency Eject

Asustek Xonar Essence STX 2 Channel PCI Express Audio Card

Corsair AX750 Professional Series 750W AX ATX/EPS Fully Modular 80 PLUS Gold PSU

Western Digital WD1002FAEX Caviar Black 1 TB 7200 RPM Internal Hard Disk Drive

Logitech C270 HD Webcam Purple Pebbles

Cooler Master Tower HAF 922 with Transparent Side Panel

Gigabyte Radeon HD 7970 GHz Edition, 3GB GDDR5, PCI-Express

Asus P8Z77-V DELUXE Motherboard (Socket 1155, 32GB DDR3 Support, ATX, Bluetooth v4.0, Intel Z77 Express, SLI/CrossFireX Support, LudicLogix Virtu MVP)

Microsoft Natural Ergonomic Desktop 7000: wireless keyboard , mouse

Intel 3rd Generation Core i5-3570K CPU (4 x 3.40GHz, Ivy Bridge, Socket 1155, 6Mb L3 Cache, Intel Turbo Boost Technology 2.0)

Corsair CML8GX3M2A1866C?9R LP Vengeance 8GB 1866MHz CL9 DDR3 Memory Two Module Kit

Microsoft Windows 7 Home Premium, Full Version (PC DVD), 1 User

Samsung S24B370HS 24 inch Widescreen LED Monitor - Gloss Black (1920 x 1080 Full HD, 2ms, HDMI/VGA)
 
Hi Dave, any chance you'd have a mo to break it down so I can see the numbers, I've tried but I don't really understand all the stats?
 
Are you reading the manufacturer's power spec? Because that will be completely wrong. Your i5 draws 77W and 7970 probably no more than 200. At worst your system will be using < 400W of power at maximum load.
 
Roach said:
Hi Dave, any chance you'd have a mo to break it down so I can see the numbers, I've tried but I don't really understand all the stats?
Click to expand...

no need to brake down the number, the AX750 will take that system on no problem but i was do it for you when i have 5

you should also know when i item says it will use XXX watts of power thats when it under full load and you will never run every item in your pc at full load at the same time

Antowns said:
Sorry to jump in your thread Roach, just wondering how you measure your power draw? I'm really interested to test mine.
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buy a plug power meter that will show you what you are using in real time. or go look for the info on all you items and all up the power requirements
 
The rating manufacturers place on their components have a VERY safe margin of error. Also, websites that 'supposedly' calculate power draw are often way out.

I remember calculating power draw for a 775 quad core system with dual NVidia cards on one of those sites and it stated it would use up to 1kw... in reality power draw at the wall socket was a decent chunk less than 700w.

Highest draw of any system I've owned was 750w and that was a Phenom Hex core with dual GTX470's.

I currently run an unlocked GTX465 (aka storage heater) and quad core Phenom II system on a 550w bequiet! PSU with no issues at all.

I'd happily say that 750w unit will be ample for your single card set up.
 
Antowns said:
Sorry to jump in your thread Roach, just wondering how you measure your power draw? I'm really interested to test mine.
Click to expand...

That's ok, I don't know, that's why I'm on here. I have staring at stas and not figured it out yet, my heads going to pop if I look at any more specifications tabs:)
 
750w will be more than enough. Using a plug in power monitor, in game the spec in my sig is pulling 350w at the wall, thats with a pretty substantial overclock on the gpu as well. My previous (and more power hungry) i7 920 @4.2ghz with oc'd gtx 470's was drawing 630w at the wall in games.
 
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