Good 550W PSU + 1080 Ti?

sk3tch

[H]ard|Gawd
Joined
Sep 5, 2008
Messages
1,470
Hey guys,

My 2080 Ti FE is due to arrive today and I am faced with the reality of potentially losing my dear MSI GTX 1080 Ti Lightning Z...I have a secondary box with a 5820K (OC'd to 4.2GHz, AIO water cooled, 64GB RAM, 3 SSDs - it used to be a VMware ESX box) and an EVGA SuperNOVA G2 550W PSU (https://www.newegg.com/Product/Product.aspx?Item=N82E16817438053). MSI says 750W minimum but c'mon (https://www.msi.com/Graphics-card/GeForce-GTX-1080-Ti-LIGHTNING-Z/Specification).

It has had a 1070 Ti and currently has a 1080 in it with no issues. Am I pushing it a bit too far with a 1080 Ti? I have bigger PSUs in the garage but I am damn lazy.

Thinking of keeping the 1080 Ti versus selling...and instead selling the 1080.

Thanks!

EDIT: turns out it's not out of the question: http://www.tomshardware.com/answers/id-3503422/550w-psu-gtx1080ti.html and
https://www.reddit.com/r/nvidia/comments/66afh7
 
Last edited:

dvsman

2[H]4U
Joined
Dec 2, 2009
Messages
3,112
Just run it until it croaks. Either it will work or it won't. I ran my old Titan X (Maxwell) on a 450w PS in my NCase build and it worked fine until I took it apart for parts. Of course don't expect to OC anything since you won't have any headroom left, that's for sure.
 

sk3tch

[H]ard|Gawd
Joined
Sep 5, 2008
Messages
1,470
Just run it until it croaks. Either it will work or it won't. I ran my old Titan X (Maxwell) on a 450w PS in my NCase build and it worked fine until I took it apart for parts. Of course don't expect to OC anything since you won't have any headroom left, that's for sure.
It's running today OC'd to 4.3GHz with an AIO water cooler plus a GTX 1080 just fine @ 550W. I believe it's a re-badged Seasonic so it's an awesome PSU.

But yeah, you're right - it works or it doesn't and if it blows up it blows up. It's gold efficiency so it will probably actually have a bit of headroom assuming I don't OC the 1080 Ti like crazy (which it's pretty pointless to do so, anyway with NVIDIA's restrictions).
 

noobferguson

Limp Gawd
Joined
Oct 6, 2013
Messages
463
It's running today OC'd to 4.3GHz with an AIO water cooler plus a GTX 1080 just fine @ 550W. I believe it's a re-badged Seasonic so it's an awesome PSU.

But yeah, you're right - it works or it doesn't and if it blows up it blows up. It's gold efficiency so it will probably actually have a bit of headroom assuming I don't OC the 1080 Ti like crazy (which it's pretty pointless to do so, anyway with NVIDIA's restrictions).
Thankfully, it's a Seasonic so even it fails it won't quite blow up (I only hear of really poor quality PSUs taking other components with them when they die).
 

sk3tch

[H]ard|Gawd
Joined
Sep 5, 2008
Messages
1,470
Thankfully, it's a Seasonic so even it fails it won't quite blow up (I only hear of really poor quality PSUs taking other components with them when they die).
Decided to use the Seasonic X-1250 Gold in my garage - forgot the Z needs 3x 4 prong plugs. Couldn’t dig them up for the 550W G2.
 
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