Help with GPU wattage requirements!

The_fuzz_buzz · Dec 7, 2013

Ok, so first off, I'm pretty good with computers, but of course, there are some things I don't know. So I was looking at buying an Nvidia GTX Titan as a future upgrade for a future PC I'm buying. The PC is alright out of the box, and should be able to run most games on low-mid graphics at playable FPS, running on a 300 Watt power supply. But the specs of the Titan say it needs a 600 Watt "minimum". Does that mean that the card itself needs at least 600 Watts, but I would still need a power supply big enough to support all the other hardware, or does that mean I need a 600 Watt power supply for it AND the rest of the PC?

Azrael47 · Dec 7, 2013

You need atleast a 600w PSU for the entire system http://www.guru3d.com/articles_pages/geforce_gtx_titan_preview_reference,9.html

markwp · Dec 7, 2013

The 600w accounts for the gpu AND the rest of the system.

GhosT_Hv · Dec 7, 2013

No.
they meant that your whole system needs atleast 600W power supply when you'll install GTX Titan in your System.
GTX Titan will consume power according to its needs [load].

ethanroxx · Dec 7, 2013

No, 600 watts for the whole system.

If you want a good graphics card, get a 780 ti. It is better than the titan for 200$ less.

Honestly, I dislike nVidia outright. They skinned alive consumers for a ton of months, until AMD released the r2 90X, and then They dropped the price 150$. 150$!

I am not going to suggest anything else, but that nVidia is a money sucker.

dansgas1000 · Dec 7, 2013

600W for the entire system. You might get away with 550W if it's a quality one. It's also not all about watts it's about the amps on the 12V rail, I am not sure how much you would need for a titan but I am assuming it's around 45A-50A.

aevm · Dec 7, 2013

The GTX Titan alone consumes about 250W at most. You can see an example here where the entire computer, including a Titan, consumed 111W when idle and 429W under load.
http://www.anandtech.com/show/6774/nvidias-geforce-gtx-titan-part-2-titans-performance-unveiled/15

smorizio · Dec 7, 2013

http://www.tomshardware.com/reviews/geforce-gtx-titan-performance-review,3442-12.html
the video card has a fix wattage that listed online. the wattage of the gpu and the cpu have to be added together.
this is what used the most power the 12 volt plus rail. the rail on every power supply has two outputs listed the wattage and the amps rating for that rail. 300w power supply would have max amp of 25 amps. at 600w power supply would have 50 amps rating. the video card vendor put the recommended
at 600w or greater so that the gpu and cpu plus hard drives and fans would be a greater number then needed. if you push a power supply to close to it max output..it can ripple out...let ac wave form into the dc side of the power supply. this can cause random lock up or reboots. the unit can over heat and shut down too. the worst is if it a cheap no name unit it can pop and take your rig out.
http://www.youtube.com/watch?v=Em4PLzv2zSE
the caps in power supply do age and for gaming rig most users use a 650 or 750 bronze rated power supply.
cosair or seasonic unit or one of the rebranded units.

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Help with GPU wattage requirements!

The_fuzz_buzz

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Azrael47

Azrael47

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markwp

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GhosT_Hv

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ethanroxx

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dansgas1000

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aevm

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smorizio

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