Dell XPS 9100, looking to upgrade GPU to GTX 780

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historian88

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Aug 29, 2014
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I have a Dell XPS 9100.
My CPU is an i7 X990 3.47Ghz. I have 12gb of Ram. For the last few years I have had the Radeon HD 5970 the computer came with. AMD recommends a 650 watt or better PSU, but mine has run fine with the 525 watt psu that came installed with the system.

I am looking to upgrade. I'd like to get a GTX 780. I assume I would also need a new PSU to go with it.

Is there any reason this would be a problem (motherboard comparability, bottlenecks, things like that)?
 
Solution
cin19
Both EVGA SuperNOVA 750W and EVGA gtx780 are good, that is very good for the 10 year warranty on the PSU.

As I know dell PSU is good one too even it is not the top one. And nobody will know when the PSU will be broken. But I am sure you can use that dell psu for the gtx780 3gb now even you had it for while, because it use less wattage than the HD5970 2GB. Here is other comparison. http://www.game-debate.com/gpu/index.php?gid=880&gid2=325&compare=geforce-gtx-780-vs-radeon-hd-5970

When you upgrade the powerful GPU, it is always better to upgrade the PSU too. For single gtx780 3gb, you can even power it up with the good brand 550-600W PSU, if you use that evga gold+ 750W, I think you may power the 2X gtx780 3GB too.
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cin19

cin19

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Conor17777

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You will be fine,

However , saying that i would advise an upgrade to a newer PSU, if your PSU is already that old it is perhaps better not to take any risks.

If you want a suitable upgrade to your current PSU then i would advise an AX 860.
They can be picked up a lot cheaper than the AX 860i (The Corsair Link version)

AX 860 :
http://www.amazon.co.uk/Corsair-Series-Platinum-CP-9020044-UK-Warranty/dp/B00AO0YRMI/ref=sr_1_2?ie=UTF8&qid=1409328783&sr=8-2&keywords=ax+860i

Hope your new GPU goes well :)
 
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sora

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I would personally get an XFX 850W or SeaSonic 820W power supply. I doubt you'll need an 850W though as it seems kind of overkill; a 650W or 750W power supply will do you fine.
 
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historian88

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Aug 29, 2014
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What company makes the best PSU? Also, ideally I would like a PSU that is less than $120, if possible.
 
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Dark Lord of Tech

Dark Lord of Tech

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Aug 18, 2009
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Super Flower units are the best on the market.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($94.99 @ NCIX US)
Total: $94.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-29 18:51 EDT-0400


Or if you want 850w.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($109.99 @ NCIX US)
Total: $109.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-29 18:52 EDT-0400

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=377
jonnyguru review ^
 
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historian88

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Aug 29, 2014
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Some of you have said that with the 3gb version of the GTX780, my psu will be fine, because that card uses less wattage than my current Radeon HD 5970. If I do decide to go that route, keeping my current psu, which I have had since 2011, what are the risks?
 
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cin19

cin19

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Mar 14, 2011
15,726
218
112,340
Both EVGA SuperNOVA 750W and EVGA gtx780 are good, that is very good for the 10 year warranty on the PSU.

As I know dell PSU is good one too even it is not the top one. And nobody will know when the PSU will be broken. But I am sure you can use that dell psu for the gtx780 3gb now even you had it for while, because it use less wattage than the HD5970 2GB. Here is other comparison. http://www.game-debate.com/gpu/index.php?gid=880&gid2=325&compare=geforce-gtx-780-vs-radeon-hd-5970

When you upgrade the powerful GPU, it is always better to upgrade the PSU too. For single gtx780 3gb, you can even power it up with the good brand 550-600W PSU, if you use that evga gold+ 750W, I think you may power the 2X gtx780 3GB too.
 
Upvote 1 Downvote
Solution
H

historian88

Reputable
Aug 29, 2014
8
0
4,510


I've read that for the 780 you need 42 amps on the 12v rail. Will I have enough? On the label for my psu, it says:
+12VA-18a
+12VB-18a
+12VC-18a
+5V-20a
+3.3V-20a
-12V-0.5a
+5VSB-4a

It also says "Max. Combined Power on +12VA & +12VB & +12VC output is 500W


 
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ko888

ko888

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Feb 18, 2009
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That Delta PSU should be fine. It already has the appropriate 75 Watt 6-pin and 150 Watt 8-pin PCI Express supplementary power connectors. Each PCI Express supplementary power connector should be wired to a different +12V rail.
 
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