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blue_ninja

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4138

March 12th, 2017 04:00

1080 Ti on a 460W PSU (Aurora R5)

Hi,


Recently bought the Aurora R5 - with 1070 and 460W PSU - and was wondering if the PSU will be enough for the 1080 Ti.


I know that 850W PSU is required for SLI but was wondering if 460W would be sufficient for a single 1080 Ti.


If I had to upgrade my GPU, which PSU do you recommendI upgrade my R5 to (Alienware PSUs it seems are propriety and aftermarket PSUs are not the best).


Found a couple of eBay but not sure which would be ideal:


850W PSU (Part Number 48Y6D )


http://www.ebay.com/itm/NEW-OEM-Genuine-Alienware-Area-51-R2-850W-Power-Supply-N1WJD-48Y6D-/182314243859

875W PSU (Part Number W229G)


http://www.ebay.com.au/itm/For-Dell-PrecisionT5500-Alienware-Aurora-875W-J556T-Power-Supply-W-cab-N875EF-00-/282368434778?hash=item41be78625a:g:uRAAAOSwB-1Yq~cg

CometusCrimsonion

36 Posts

March 18th, 2017 00:00

To help you learn how to figure out the answer, instead of just mindlessly giving you the answer, let's start with the basics...

From Nvidia's own website:

Thermal and Power Specs:
91Maximum GPU Temperature (in C)
250 WGraphics Card Power (W)
600 WRecommended System Power (W)4
One 6-pin, One 8-pin Supplementary Power Connectors
This alone should give you a pretty good hint to answer your question.
However, from a trusted 1080TI Review
Total System Power Consumption: 403W
SINCE no PSU is ever 100% efficient, you're going to have to do some math, then make up your mind on how fast & loose you want to play.
We know these Dell PSU's aren't even 80% certified, but even if they were, AND you wanted to ignore the "official" recommended PSU from Nvidia, 450watts*.8 (efficiency)=368W which is kind of decently below the observed power draw from the article above.
Now, you're probably not running a Intel Core i7-4960X like the test system, but it's close enough for the sake of argument here.
As for the 2 links to 850W&875W PSU's, if you're going to spend $100+ on a new PSU, then don't be crazy enough to get a non-certified one.
Seasonic, Corsair, and EVGA make excellent products and retail for around the same price. Can't go wrong with any of these brands usually, and you'll find them to be more efficient & quieter than any OEM one. There's also multiple threads in this very forum asking & describing what you're looking for. Someone with more sass might mention how you should try searching the forum first, but since I'm feeling helpful, here's an awesome thread helping you out.
Hit up your favorite retailer and see what's on sale. For the generic topic of efficiency & price, going from worst to best:
OEM->80 Plus -> 80 Plus Bronze ->80 Plus Silver ->80 Plus Gold -> 80 Plus Platinum -> 80 Plus Titanium.
At this point, it's all about your wallet.
You might do better spending 20 minutes on the links above & Google, figuring out the basics and making an informed decision.
Cheers,

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