[SOLVED] is a EVGA 600w psu enough for a gtx 780 in sli?

[Ewan_Partridge]

hello in my pc i currenty have:
amd fx 8350
16gb ddr3 1600mhz
gtx 780 (soon to be sli)
450w psu(soon to be 600)

i was wondering if 600w would cut it? (for sli)

 

[sizzling]

hello in my pc i currenty have:
amd fx 8350
16gb ddr3 1600mhz
gtx 780 (soon to be sli)
450w psu(soon to be 600)

i was wondering if 600w would cut it? (for sli)

No. My single 780 recommended 42A on the 12v rail. You ideally want a good quality 600w for a single 780. You realise sli is fairly pointless these days.

 

[Ewan_Partridge]

No. My single 780 recommended 42A on the 12v rail. You ideally want a good quality 600w for a single 780. You realise sli is fairly pointless these days.

yeah thats the problem i have already bought the sli bridge so might aswell

 

[sizzling]

yeah thats the problem i have already bought the sli bridge so might aswell

? The Sli bridge should have come with the motherboard if it supported Sli. What motherboard is it? Unless you are getting the 2nd 780 for nearly nothing it’s a waste of money. Far too many games don’t support it and you the VRAM doesn’t stack so you still only have 3gb (assuming 3gb version of the 780).

 

[geofelt]

This chart would suggest 850w:
http://www.realhardtechx.com/index_archivos/Page362.htm

Past that, sli is not likely to give you any gaming performance help, and in more cases than not, it will hurt.

I think there are better ways to spend your pc budget.

 

[Ewan_Partridge]

? The Sli bridge should have come with the motherboard if it supported Sli. What motherboard is it? Unless you are getting the 2nd 780 for nearly nothing it’s a waste of money. Far too many games don’t support it and you the VRAM doesn’t stack so you still only have 3gb (assuming 3gb version of the 780).

IV formula somin

 

[sizzling]

IV formula somin

Is it this board https://www.overclock3d.net/reviews/cpu_mainboard/asus_rog_crosshair_iv_formula/1

According to this the multi gpu support is crossfire only, not Sli. It only states;

ATi CrossfireX Supported

 

[King_V]

It would also depend on which exact 600W EVGA PSU you're looking at.

Some EVGA models are good PSUs. Some EVGA models should be called POS rather than PSU.

EDIT: but I concur with @geofelt - SLI and Crossfire are dead technologies. Doesn't scale well, and, sometimes, is actually counterproductive.

 

[logainofhades]

Absolutely not a good PSU, for this. I would sell those 780's and get a single faster card. Multi-GPU gaming is dead.

 

[King_V]

Absolutely not a good PSU, for this. I would sell those 780's and get a single faster card. Multi-GPU gaming is dead.

I concur with this. With a 250W TDP rating, a single 780 is a power hog, and performs equal or less than a 1660. Might be on par with a 1650 Super or thereabouts.

Yeah, GPUs are overpriced now, but occasional deals still pop up. Not great deals, but deals nonetheless. That said, honestly, the whole platform is dated. It's a good enough system to do some things, but throwing a second GPU at it isn't going to do much for you, and is not worth the effort.

 

[logainofhades]

The 780 is even slower than that. The 780ti traded blows with the GTX 970, which in turn was similar to a 1060 3gb. I would put the 780 probably at 1650 GDDR6 performance, at best.