Would my PSU handle this ?

Dario_92 · Dec 4, 2015

Afternoon everyone

I am looking at picking up another GTX780 for sli and I was just wondering if my Corsair RM750w would handle my system with the extra card ?

My Specs are

Intel i5-3570k @ 4GHz
Gigabyte 7ZZx-UD3H-WB
16GB Corsair Vengeance @ 1866MHz
Nvidia GTX780 Windforce @ Stock
Corsair RM 750W
2xSeagate Barracuda 2TB
Samsung 840 EVO 250GB
Corsair ForceGT 128GB
XSPC CPU Kit

Thanks, Dario

Dark NighT · Dec 4, 2015

That gpu is listed to have a max tdp of 250 watt, so 2 of them should be around 500 watt, then add in the cpu which at stock does a max of 92 watt + mobo and rest of components, it would be very close.

Personally, i would either get a 980ti or wait for the next gen of cards for the sake of not running the psu to its rated power delivery all the time when the system is busy.

Dario_92 · Dec 4, 2015

Dark NighT said:
That gpu is listed to have a max tdp of 250 watt, so 2 of them should be around 500 watt, then add in the cpu which at stock does a max of 92 watt + mobo and rest of components, it would be very close.

Personally, i would either get a 980ti or wait for the next gen of cards for the sake of not running the psu to its rated power delivery all the time when the system is busy.

Yeah I was thinking about that but I only game at 1920x1080, I was looking at getting an Ultra Wide Monitor but I don't have the space for that for the time being

Cos I can get another 780 for around £200 and thats half the price of a 980ti

yassarikhan786 · Dec 4, 2015

You could always pick up one of those handy wattage monitors just to be sure you're not reaching the upper limits of your PSU.

The higher the load percentage, the more inefficient your PSU will become. Having said that, your PSU should theoretically be sufficient enough to support another 980.

Kushiro · Dec 4, 2015

OP the PSU will be able to adequately power your system even with 2 780s in sli. TDP isn't an especially accurate way of determining how much power your system will actually draw.

Look up TTLs video on how much wattage you actually need.

Also 980ti over 2x 780s easily.

Wraith · Dec 4, 2015

In all honesty yes a 750w unit is more than sufficient at running your system, no everyday task i.e rendering, gaming or browsing is going to rape your wattage to its totality. Unless your objective is to run crystal disk bench, occt, cine bench & valley all at once with strong overclocks you are highly unlikely to see anywhere near 600 - 650w max.

wrenaudrey · Dec 4, 2015

Just my small input.

I nearly have exactly the same setup as your looking to go to; got 4770k @4GHz, EVGA 780 SC SLI @stock, 8 in total SP/AF fans, 16GB 1866 Doms, play games on 1440p, etc. (look at my sig).

And the max ive ever seen my setup go using one of those wall wattage monitor is 650W.
That's max, it doesnt sit there, it really plays around 500-620w.
And im running an AX750.

For me personally, i'd want to double what my system actually uses because of noise from the fan, mine runs at probably 70% and is every audible and the efficiency, 50% use is the sweet spot.

Permafrost · Dec 4, 2015

Wraith said:
In all honesty yes a 750w unit is more than sufficient at running your system, no everyday task i.e rendering, gaming or browsing is going to rape your wattage to its totality. Unless your objective is to run crystal disk bench, occt, cine bench & valley all at once with strong overclocks you are highly unlikely to see anywhere near 600 - 650w max.

i had 2 msi gtx 780 oc at stock and an i7 4770k overclocked to 4.4ghz running on a Corsair AX760 on my multi reader it was saying i was pulling 720w from the wall when it was running valley benchmark.

Dario_92 · Dec 5, 2015

yassarikhan786 said:
You could always pick up one of those handy wattage monitors just to be sure you're not reaching the upper limits of your PSU.

The higher the load percentage, the more inefficient your PSU will become. Having said that, your PSU should theoretically be sufficient enough to support another 980.

Yeah I have been meaning to pick one up for a while now :lol:

Kushiro said:
OP the PSU will be able to adequately power your system even with 2 780s in sli. TDP isn't an especially accurate way of determining how much power your system will actually draw.

Look up TTLs video on how much wattage you actually need.

Also 980ti over 2x 780s easily.

Yeah I would get a 980ti but since I only game at 1920x1080 is the much point in forking out that price when I could pick up another 780 for under £200 ?

Wraith said:
In all honesty yes a 750w unit is more than sufficient at running your system, no everyday task i.e rendering, gaming or browsing is going to rape your wattage to its totality. Unless your objective is to run crystal disk bench, occt, cine bench & valley all at once with strong overclocks you are highly unlikely to see anywhere near 600 - 650w max.

Nah I just mainly use my pc for gaming and then the odd rendering in Sony Vegas

wrenaudrey said:
Just my small input.

I nearly have exactly the same setup as your looking to go to; got 4770k @4GHz, EVGA 780 SC SLI @stock, 8 in total SP/AF fans, 16GB 1866 Doms, play games on 1440p, etc. (look at my sig).

And the max ive ever seen my setup go using one of those wall wattage monitor is 650W.
That's max, it doesnt sit there, it really plays around 500-620w.
And im running an AX750.

For me personally, i'd want to double what my system actually uses because of noise from the fan, mine runs at probably 70% and is every audible and the efficiency, 50% use is the sweet spot.

I have never heard my fan spin on my PSU as I don't have enough load on it I don't think lol

Would my PSU handle this ?

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