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Question Will my 2012 Corsair AX850w PSU power the evga FTW3 RTX 3080 w/3 8-pin connectors?

dsc106

Senior member
May 31, 2012
302
8
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So it seems the RTX 3080 takes 2x8 pin connectors, but for some reason(?) the evga FTW3 powers it with 3 8-pin connectors?

I am wondering if my 2012 Corsair AX850 PSU can handle that. I know it handles it in terms of pure wattage, but I am not sure if the modular connections offer enough inputs. I also think I'd have to purchase another 8-pin connector if that's even possible?

Does anyone know if I can do this, or will I either need to go with an alternative RTX 3080 or upgrade my PSU to a newer Corsair with more modular connectors?
 

chimaxi83

Diamond Member
May 18, 2003
5,645
34
101
If this is the connection plate of your PSU, you should be fine. It has room for four 8-pin PCI-e connectors.
 

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Mopetar

Diamond Member
Jan 31, 2011
4,850
1,141
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Your power supply is from 2012? Not sure if I'd trust it if so.
Seems like it should be fine, even if it isn't going to hit the original capacity due to age since there's plenty of headroom. Maybe it would have had some issues before the firmware update where the card could spike up to 500W power draw for very brief periods of time, but that shouldn't be an issue here. Well at least as long as he isn't running one of those Intel CPUs that could draw 400W as well.
 

Kenmitch

Diamond Member
Oct 10, 1999
8,152
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Seems like it should be fine, even if it isn't going to hit the original capacity due to age since there's plenty of headroom. Maybe it would have had some issues before the firmware update where the card could spike up to 500W power draw for very brief periods of time, but that shouldn't be an issue here. Well at least as long as he isn't running one of those Intel CPUs that could draw 400W as well.
I just wanted to bring up the alleged age of the power supply as nobody else mentioned it. They don't last forever, but even new duds can take out a rig.
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
20,810
8,970
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Your power supply is from 2012? Not sure if I'd trust it if so.
I have like 4 of those, running 2080TI's at 100% load doing DC 24/7/365. Corsair of that ago are great. The only ones I have has die are the 860i and the 1200i. Its seems that the "i" series are garbage.

Edit: I did have an RM100x go bad, and it took out my motherboard, but I got as "damage" RMA, and they not only replaced the PSU but gave me a fair amount for the motherboard. I had one AX850 die, and it did not hurt anything else.

I have switched to EVGA though.
 

dsc106

Senior member
May 31, 2012
302
8
81
The age makes (made?) me nervous. It's the AX850. At the time the warranty was 7 years, so it is now out of warranty. But I think it's 10 years now for the ones they are selling... basically the same?

If there's much chance the unit fails badly and fries all my new stuff ($500 X570 mobo, $800 5950x, $800-$1000 RTX 3080 (thinking i'll wait and spring for the 20gb model), samsung 980 pro nvmes...) I won't be happy.

But I heard they are designed to fail safe without any issue? I'd hate to retire it years early - I certainly don't run my system 24/7, nor at max load all the time, and it had plenty of headroom especially over the years with the 3930k and originally a GTX 670, then GTX 970, now 1080 TI.

But I will replace it with an AX1000 for this new build if you all tell me I ought to!
 

stahlhart

Super Moderator Graphics Cards
Super Moderator
Dec 21, 2010
4,266
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The only ones I have has die are the 860i and the 1200i. Its seems that the "i" series are garbage.
I must have been lucky and got a good 1200i -- it's been running two Maxwells in SLI pretty much 24/7 for six years now, and no issues. Undoubtedly the load here is not as demanding of it as you were with yours, though.
 
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