can GTX 650 RUN ON 400w psu

Karan Luniyal

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Mar 21, 2014
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i am thinking of buying a zotac gtx 650 for gamiing purposes and nvidia has announced that it will support directx12 by future driver updates. so my psu is of 400w.my psu doesnt have 6pin so i will use dual molex to 6pin.can i run in??

MY SPECS (in case u need them)
cd/dvd player (lg)
intel pentium duo core e5400 2.7
currently 210 nvidia(using pcie slot only , no 6pin)
2gb ram
any information u need u can ask me. for ex amps and 12+ volts etc etc
THANK U VERY MUCH :)
 
Solution
You'll not be able to run any graphics card(and I mean any) on that power supply; it has only 12A on the +12V rail. Your CPU, hard drives, usb devices, fans, all that stuff will easily eat up all those watts. You install a graphics card, it'll not simply boot; or damage the psu; or damage the graphics card.
Get a new PSU first. And you're right. You're left with no choice.
Normally, I do not recommend using adapters, but a 6-pin cable is not needed for many of the GTX650s out there, so if Zotac needs one, it must be just barely, so it should be safe. What brand and model is that "400W" PSU?
If you have the money, you could get a GTX750Ti, GTX750, or HD7750, all of which are stronger that the GTX650 and do not need auxiliary power. Make SURE you get a GDDR5 version, not one of the abominations sold with the much slower DDR3.
 

matt20020

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Sep 21, 2013
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it says there 400w but I would suggest you use a bronze type single rail power supply if you can.

I would go for at least one of these two if you can

http://www.amazon.co.uk/Corsair-Builder-Series-Bronze-Supply/dp/B009RMP2VE/ref=sr_1_3?ie=UTF8&qid=1395423251&sr=8-3&keywords=corsair+power+supply

http://www.amazon.co.uk/XFX-ATX-550-Power-Supply/dp/B004RJ8EKI/ref=sr_1_1?ie=UTF8&qid=1395423302&sr=8-1&keywords=xfx+power+supply

this way it'll allow power for any additional upgrades in the future aswell better to go higher on the power than not have enough in the future!
 
An 80+ rating means that the PSU was able to provide its claimed wattage, but at the unrealistically low temperature of 23C. In the absence of a competent technical review, it gives some small hope that the unit is not junk, but is no sure thing.
The number of rails will not matter. In a multi-rail PSU, the rails have OCP trip points set to protect vs. overloads. Note that some companies may claim OCP protection when in fact competent technical reviews have shown that the required components are not present (e.g. some CoolerMaster "Extreme" units). The rails are not strictly additive, and power is never "trapped" on an under-utilized rail (contrary to an old Corsair marketing myth).
 


Can you post a picture of your power supply sticker? Which company is your power supply made of? Seems to be an aftermarket PSU. The Chinese PSU's they supply have more amps than these, even though they also are never sufficient.

12A is too low. Please post a picture for more clarity(upload on sites such as imgur and post link of image here).
 
You'll not be able to run any graphics card(and I mean any) on that power supply; it has only 12A on the +12V rail. Your CPU, hard drives, usb devices, fans, all that stuff will easily eat up all those watts. You install a graphics card, it'll not simply boot; or damage the psu; or damage the graphics card.
Get a new PSU first. And you're right. You're left with no choice.
 
Solution

matt20020

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Sep 21, 2013
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to know if a power supply has a single rail the only way is to open it up most power supplies that come with a standard PC are either two or 3 smaller supplies used in conjunction with each other, hence a power supply thats 500W with two rails will have 250W per rail which means you can overload it easier by having a load excedding 250W on either one of the two rails
 

matt20020

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Sep 21, 2013
558
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matt20020

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Sep 21, 2013
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I opened mine and soldered a new fan into it, aslong as you dont touch any capacitors you'll be fine but the components in there could shock you but wouldnt kill you its only a small glorified dc transformer rectifier circuit, the only voltage that could kill you is the voltage entering it, after the transformer its all running on 12v how can that kill you?