want to upgrade to gtx 780, but power supply is weak.

Lemonysnizzle

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Hey, first I wanna say thank you for the help. This website is the most wonderful thing in the world for problems and I gotta thank the people who take the time to help others! Second, im very sorry if this was marked in the wrong category...

My problem is, my TEACHER. A cool one at that. Is wanting to sell me his gtx 780 for 120 bucks...However my power supply is too weak. I need to do what ever is the cheapest and most effective way to get my set up to be able to use the gtx 780. Price range for power supply is roughly 100-200$ and another problem is im scared to death of changing it out as well as making sure the upgraded power supply can fit in the spot. So the dimensions are on the link for the power supply.

Windows 10
AMD FX-6300 processor
8GB system memory
gtx 750ti (yes i upgraded from the crappy amd r7 250 graphics or whatever)
2GB dedicated video memory
Thermaltake Purepower 350W - power supply - 350 Watt
https://www.cnet.com/products/thermaltake-purepower-350w-power-supply-350-watt/specs/

Dimension of my case.

Height
17.5 inches
Width
8 inches
Depth
19.5 inches
Weight
32 pounds
That is all my specs...if i didnt forget something. Here is the computer I bought if you rather just look at it yourself.
http://www.bestbuy.com/site/cyberpowerpc-gamer-ultra-desktop-amd-fx-series-8gb-memory-1tb-hard-drive-black-red/4280705.p?skuId=4280705
Thanks again for any information!
 
Solution
The GTX780 has system requirement of a 600 watt power supply. Here are two power supplies that are ATX power supplies for under $100 US. You can measure your present power supply and compare it to these. The length is the main concern.



SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply $60

https://www.newegg.com/Product/Product.aspx?Item=N82E16817151095&ignorebbr=1


EVGA SuperNOVA 650 G1 120-G1-0650-XR 80+ GOLD 650W Fully Modular Includes FREE Power On Self Tester Power Supply $90

https://www.newegg.com/Product/Product.aspx?Item=N82E16817438026&ignorebbr=1


My favorite at the moment is the corsair rmx 550w. Its a gold rated psu, modular and not too expensive. Also as long as it isn't a gigantic gtx 780 it should fit. Do note that the fx 6300 will hold it back in more cpu intensive games.
 

Lemonysnizzle

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Thanks! Ill be checking it out. Im still in a spot where I am afraid to spend money, so as soon as i know for sure it would fit and work, I wouldnt see why I wouldnt get it. price seems perfect.
 


Just make sure you do a good job with cable management as that case doesn't look like it has any cable management holes and otherwise it might end up looking a bit ugly :p.
 

Lemonysnizzle

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That is most definitely one of my fears. I will probably watch a million different videos on how to properly change out my power supply.
 


Pins? If you mean the Pcie x16 slot connector on the bottom or the 2 power plugs it will have then don't worry Your motherboard has the Pcie slot and the new psu will have the plugs for the card just don't forget to plug them in as I have done so many times already.
 


it's really easy just take the needed cables check where they go and then look for the best path to it. Also don't be afraid if you have to push a little hard on the 24pin connector for some reason it doesn't like snapping into place on the rmx 550 with certain motherbaord all that easily.
 
The GTX780 has system requirement of a 600 watt power supply. Here are two power supplies that are ATX power supplies for under $100 US. You can measure your present power supply and compare it to these. The length is the main concern.



SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply $60

https://www.newegg.com/Product/Product.aspx?Item=N82E16817151095&ignorebbr=1


EVGA SuperNOVA 650 G1 120-G1-0650-XR 80+ GOLD 650W Fully Modular Includes FREE Power On Self Tester Power Supply $90

https://www.newegg.com/Product/Product.aspx?Item=N82E16817438026&ignorebbr=1
 
Solution

Lemonysnizzle

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May 2, 2016
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Thanks for the heads up! Just to be sure, imma give it some time and see other peoples opinions. Im very nervous on spending money! Do like the corsair rmx 550w so far though. Nice price from what I can see.
 


The gtx 780 only uses about 230w on full load even with the remaining system you'll get a max load of about 350w. The recommended 600w by Nvidia is just there for people who have lesser quality units that can't deliver 600w but are advertised to do so. The Rmx 550 is perfectly fine for it.
 
If you know the model of the case, the supported graphics card length is usually in the spec's. But you can measure from the inside of the expansion slot along the PCI express x 16 slot to the nearest case obstruction (like the the drive bay cages). Then compare that to the spec's of the graphics card.
 


Problem is the current psu can't support a rx 470/480 so an upgrade is neede anyways.
 


That argument is an old one and it doesn't help anyone. Those requirements are there for a reason. Also the price difference between a 550Watt and 650watt power supply is negligible.
 

With your overall budget, and the lower cost 620 Watt Seasonic PSU that terry4536 suggested, you could still come out ahead with an RX 470 / 480. At this point in time, a GTX 780 is not a good investment. NVIDIA has abandoned any sort of driver optimizations for cards based on their older 7xx series (Kepler) architecture so if you're planning to play any modern DX12 or Vulkan based games such as Doom, you may regret going with the older NVIDIA card. While it should still do everything it did when it was new in titles from years ago, it hasn't aged well and does poorly in newer titles. Even a 960 can best it in modern titles, and the 960 was never a powerhouse of a card. I don't enjoy saying it but, I think your teacher held on to the card too long to be asking as much as he is for it.