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Enough Voltage for SLI

TheRealSon
By TheRealSon
in Power Supplies
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Hello All,

 

I have been wanting to add a second GTX 780 for awhile now but have been concerned about my limited PSU. I have a OCZ 750 Watt  PSU as well as an i5-3570k that is water cooled and overclocked. Of the several sites i looked at that offer psu calculators i seem to be over or right at the wattage limit on my psu once i add in the second gpu. I am willing to upgrade to the newer 970s since i'd prefer to not upgrade my psu. Any advice is appreciated as well as options i haven't considered.

 

Thanks,

 

TheRealson

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You will not even hit close to 750W. You can see in Linus' 4k build video that his dual 780Ti hit 625 in synthetic stress tests so you are fine

RIG: I7-4790k @ 4.5GHz | MSI Z97S SLI Plus | 12GB Geil Dragon RAM 1333MHz | Gigabyte G1 Gaming GTX 970 (1550MHz core/7800MHz memory) @ +18mV(Maxed out at 1650/7800 so far) | Corsair RM750 | Samsung 840 EVO 120GB, 1TB Seagate Barracuda | Fractal Design Arc Midi R2 (Closed) | Sound Blaster Z                                                                                                                        Getting: Noctua NH-D15 | Possible 250GB Samsung 850 Evo                                                                                        Need a console killer that actually shits on every console? Here you go (No MIR/Promo)

This is why you should not get an FX CPU for ANY scenario other than rendering on a budget http://linustechtips.com/main/topic/286142-fx-8350-r9-290-psu-requirements/?p=3892901 | http://linustechtips.com/main/topic/266481-an-issue-with-people-bashing-the-fx-cpus/?p=3620861

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Wattage

You don't have to worry, it doesn't suck up that much power.

.

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Hangon.. so you'd rather buy two 350$ cards than spend maybe 150$ on a new psu?

Core i7 4820K  |  NH-D14 | Rampage IV Extreme | Asus R9 280X DC2T | 8GB G.Skill TridentX | 120GB Samsung 840 | NZXT H440  |  Be quiet! Dark Power Pro 10 650W

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@SuperPug I have one 780 already so if i needed a new PSU i'd have to buy a new PSU plus the other GPU. If i went the new 970 route i'd have more than enough overhead on my PSU to run SLI without having to upgrade my PSU.

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@SuperPug I have one 780 already so if i needed a new PSU i'd have to buy a new PSU plus the other GPU. If i went the new 970 route i'd have more than enough overhead on my PSU to run SLI without having to upgrade my PSU.

Yeah but a PSU is much cheaper than a GPU

RIG: I7-4790k @ 4.5GHz | MSI Z97S SLI Plus | 12GB Geil Dragon RAM 1333MHz | Gigabyte G1 Gaming GTX 970 (1550MHz core/7800MHz memory) @ +18mV(Maxed out at 1650/7800 so far) | Corsair RM750 | Samsung 840 EVO 120GB, 1TB Seagate Barracuda | Fractal Design Arc Midi R2 (Closed) | Sound Blaster Z                                                                                                                        Getting: Noctua NH-D15 | Possible 250GB Samsung 850 Evo                                                                                        Need a console killer that actually shits on every console? Here you go (No MIR/Promo)

This is why you should not get an FX CPU for ANY scenario other than rendering on a budget http://linustechtips.com/main/topic/286142-fx-8350-r9-290-psu-requirements/?p=3892901 | http://linustechtips.com/main/topic/266481-an-issue-with-people-bashing-the-fx-cpus/?p=3620861

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Yeah but a PSU is much cheaper than a GPU

Yes i understand that but I want more graphics power and if i needed a new PSU it would be almost as expensive to just upgrade to the new 970s without having to upgrade the PSU. If i needed a bigger PSU id have to buy that along with the second 780. 

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Yes i understand that but I want more graphics power and if i needed a new PSU it would be almost as expensive to just upgrade to the new 970s without having to upgrade the PSU. If i needed a bigger PSU id have to buy that along with the second 780. 

Dual 970 is more expensive than 1 780 and 1 psu

RIG: I7-4790k @ 4.5GHz | MSI Z97S SLI Plus | 12GB Geil Dragon RAM 1333MHz | Gigabyte G1 Gaming GTX 970 (1550MHz core/7800MHz memory) @ +18mV(Maxed out at 1650/7800 so far) | Corsair RM750 | Samsung 840 EVO 120GB, 1TB Seagate Barracuda | Fractal Design Arc Midi R2 (Closed) | Sound Blaster Z                                                                                                                        Getting: Noctua NH-D15 | Possible 250GB Samsung 850 Evo                                                                                        Need a console killer that actually shits on every console? Here you go (No MIR/Promo)

This is why you should not get an FX CPU for ANY scenario other than rendering on a budget http://linustechtips.com/main/topic/286142-fx-8350-r9-290-psu-requirements/?p=3892901 | http://linustechtips.com/main/topic/266481-an-issue-with-people-bashing-the-fx-cpus/?p=3620861

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Dual 970 is more expensive than 1 780 and 1 psu

Agreed. But irrelevant if i dont need a new PSU.

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