Is my PSU good enough for a GTX 770?

FallenSky

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Jun 13, 2013
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I have a SEASONIC G SERIES 550W 80PLUS GOLD POWER SUPPLY (SSR-550RM)

here are my specs:

i7 4770k
Mushkin blackline 8 gb
ASUS Z87C
Samsung 840 SSD
Seagate 1TB
 
Solution
For example a good psu like seasonic gives morre watts than it labeled for.
I remember one rosewill psu that gives like 620w and then it shuts down. Lebeled for 550w.
So you really can SLI two GTX 770 with a gooid 550w PSU.
SeaSonic G gives 609w to 100% load.
http://www.hardwaresecrets.com/article/Seasonic-G-550-Power-Supply-Review/1683/11

Sure better buy 650w seasonic x 650w if you SLI. But a good 550w PSU can handle SLI becaause if build takes 200w other videocard more do not make over 400w?
So ypu have neas 150w to spare with 550w psu. + it can handle more than it is labeled for? So seems to me it can handle SLI ?
Yes it is. GTX 770+ build is taking about 220w out of wall socket. So you have plenty.
450w is more than you need with your build. 550w is near so much what can handle 2 GTX 770 in SLI. It was only 208w that GTX 770 + 3770k +other parts (whole build) took in game testThey played BF3 maybe 4770k takes even less power?
X-201305301547571645.png
 

mortonww

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May 27, 2009
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No. The worst that could happen is that your system will shut off when you start gaming. You have 45 amps on the 12 Volt rail. 770 should only need around 16 or 17 amps. CPU will use around 7 to 10. Everything else will be negligible compared to those two. So you should be fine. Would recommend more margin if you do plan to SLI, though. Probably go with 700 watts and higher amperage.
 
For example a good psu like seasonic gives morre watts than it labeled for.
I remember one rosewill psu that gives like 620w and then it shuts down. Lebeled for 550w.
So you really can SLI two GTX 770 with a gooid 550w PSU.
SeaSonic G gives 609w to 100% load.
http://www.hardwaresecrets.com/article/Seasonic-G-550-Power-Supply-Review/1683/11

Sure better buy 650w seasonic x 650w if you SLI. But a good 550w PSU can handle SLI becaause if build takes 200w other videocard more do not make over 400w?
So ypu have neas 150w to spare with 550w psu. + it can handle more than it is labeled for? So seems to me it can handle SLI ?
 
Solution

mortonww

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May 27, 2009
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That must be for the GPU alone. 3770k is a 77 watt chip, and the guru3D review says the card itself uses around 195 Watts. So a system with those two should be around 270 Watts at the very least.
 


No it is not it is all build. Use google translator.
http://muropaketti.com/artikkelit/naytonohjaimet/nvidia...

First they say this: The power consumption was monitored Etech PM300 energy meter that measured the size of your computer's power consumption excluding the evidence. Temperatures were EVGA's Precision X 4.2.0 software. The exertion was used with DirectX 11 API support Battlefield 3, the game and sleep readings were recorded in Windows 8 desktop to 10 minutes of 3D stress after the end.
And then there is picture how much watt it took when they was playing the game BF3
Build was like this.
Intel Core i7-3770K, 3,5 GHz, Turbo Boost 2.0: max. 3,9 GHz
Asus P8Z77-V Deluxe (Intel Z77)
8 Gt HyperX DDR3-1866 (9-11-9-27 2T)
Corsair Force GT 90 Gt SSD SATA 6 Gb/s
Kingston 256 Gt HyperX SSD SATA 6 Gb/s
SilverStone Strider Gold 750W
LG Blu-ray
Microsoft Windows 7 Ultimate 64-bit
Samsung display (1920x1080)

Maybe it took less watts in test because they did not overclock the system?
Not CPU or the video card.

 

Phreakje

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Jul 5, 2013
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I have the same problem, but my PSU is only 500W. Do you think I should buy a new one like around 700W? (I also want to buy a GTX 770)
My second question is, what else uses my power? Because I have a I5 2320, instead of I7. So it wont uses so much power so can more power go to my GPU?
Thanks for the advice!
 

FallenSky

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Jun 13, 2013
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Well as far as I'm aware older generation i processors are actually more power consuming than their newer counterparts. Your i5 2320 consumes 95w while an i5 4670 consumes 84w.
 

fnatic

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Jun 25, 2013
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The GTX770 with "most" CPU's will run around 500watts (probably under 500 more like 450) under full load. Providing you have a good PSU you'll be fine. I would say 550 and you're good. 650 and you're perfect.