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GTX 770 + PSU Upgrade

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  • GPUs
  • Power Supplies
  • Computers
  • Components
Last response: in Components
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December 8, 2013 12:22:43 PM

I was gifted a computer by a friend when he bought a few on Newegg about a year ago. Now, I have already done some upgrades to it (OCed the AMD FX 8120 to 4.0 Ghz with a Hyper Evo 212 :)  ) and another HDD from another computer of mine. Now that the holidays are rolling around, I'd like to put a 770 in it. Could someone let me know if this is possible? I'm guessing it is, as the PC isn't a small-tower (probably mid-sized). I know I'm going to need a new PSU, as the 300W it came with isn't going to cut it.

Here is the original computer from Newegg: http://www.newegg.com/Product/Product.aspx?Item=83-103-...

And here is the GTX 770 I plan on buying (also from Newegg): http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The PSU I was looking at (see below): http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Now, I'm not really keen on power supplies, so if anyone has a better suggestion for under 100 dollars, I'd be glad to hear it. I really can't go above 100 dollars on the PSU, and I want something that will last a few years with the 770 and OCed CPU. The only real future upgrades I ever hope to fulfill is possibly another few HDDs and an SSD. SLI probably won't happen unless I build a new computer with a better motherboard in it anyway. If someone knows if this motherboard does support SLI (I doubt it though), I'd be happy to hear that though. ;) 

Thanks for any help/advice!

More about : gtx 770 psu upgrade

a b ) Power supply
December 8, 2013 12:31:41 PM

Your MB does not support SLI. It only has one PCI x16 slot, no place to insert a second card.

The GTX 770 needs 600W or more according to nVidia. You could get the 650TX PSU for example.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

GTX 770 SLI needs 850W anyway, so the 750W PSU wouldn't be reusable if you get a new MB and a second GTX 770 later.

Look inside the PC and see if you've got physical room for a GTX 770. It's about 10.5 inches long.
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December 8, 2013 12:35:31 PM

aevm said:
Your MB does not support SLI. It only has one PCI x16 slot, no place to insert a second card.

The GTX 770 needs 600W or more according to nVidia. You could get the 650TX PSU for example.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

GTX 770 SLI needs 850W anyway, so the 750W PSU wouldn't be reusable if you get a new MB and a second GTX 770 later.

Look inside the PC and see if you've got physical room for a GTX 770. It's about 10.5 inches long.


Ah, so would the CX 600W work? Or would you recommend the 750W for longevity reasons?

Also, 10.5 inches long?! Wow. I might not have the room. :( 
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December 8, 2013 12:57:01 PM

aevm said:
Look inside the PC and see if you've got physical room for a GTX 770. It's about 10.5 inches long.

Do you have the complete dimensions (height/width)? I couldn't find them on Newegg. The length should just fit if I move a SATA cable out of the way.
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a b ) Power supply
December 8, 2013 2:31:22 PM

The CX 600W should work. I'd prefer the 650TX because it's higher quality.

I made a mistake in my previous post, sorry. The REFERENCE version of the GTX 770 is 10.5 inches long (I got that from nVidia's site). The Gigabyte model you want is actually 11.5 inches long (L=292mm W=129mm H=43mm - see http://www.gigabyte.com/products/product-page.aspx?pid=...)

So, it looks like you won't have room for Gigabyte's monster card :( 

There's an Asus version that is 10.7" long
10.7 " x 5.2 " x 1.6 " Inch
27.17 x 13.2 x4.06 Centimeter
https://www.asus.com/Graphics_Cards/GTX770DC2OC2GD5/#sp...

I hope you have room for that one at least...
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December 8, 2013 2:38:48 PM

aevm said:
The CX 600W should work. I'd prefer the 650TX because it's higher quality.

I made a mistake in my previous post, sorry. The REFERENCE version of the GTX 770 is 10.5 inches long (I got that from nVidia's site). The Gigabyte model you want is actually 11.5 inches long (L=292mm W=129mm H=43mm - see http://www.gigabyte.com/products/product-page.aspx?pid=...)

So, it looks like you won't have room for Gigabyte's monster card :( 

There's an Asus version that is 10.7" long
10.7 " x 5.2 " x 1.6 " Inch
27.17 x 13.2 x4.06 Centimeter
https://www.asus.com/Graphics_Cards/GTX770DC2OC2GD5/#sp...

I hope you have room for that one at least...


Actually, that MIGHT squeeze in there. I honestly don't know. I am really just kind of eye-balling it with a tape measure. I'll open up my case and measure internally to be sure. And I suppose I can use the TX, as it's only 90 dollars. I just don't have the budget to spend 130+ or something on a really high quality 750W.
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a b ) Power supply
December 8, 2013 2:44:32 PM

Weird, MSI has a GTX 780 card that is 10.47" long, while their GTX 770 is 11" long. You'd think the more powerful card would be longer.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Anyway, even if you manage to fit a GTX 770 or GTX 780 in your existing case, I don't think it would be cooled properly. Consider buying a new case...
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December 8, 2013 2:55:01 PM

aevm said:
Weird, MSI has a GTX 780 card that is 10.47" long, while their GTX 770 is 11" long. You'd think the more powerful card would be longer.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Anyway, even if you manage to fit a GTX 770 or GTX 780 in your existing case, I don't think it would be cooled properly. Consider buying a new case...


Why so? I have plenty of room around the card. It's just the length, mainly.
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