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Greetings, it's time for a overhaul of my system and I need someone to give feedback and thoughts on it.

Current build

PSU: Fractal Design Newton 600W (about 6 months old)

Motherboard: MSI MS-7752, ATX

CPU: Intel I7 3770K 3.5 GHz Ivy Bridge

Ram: 16 Gb of forgotten specifications.

HDD: 128 Gb SSD, 7200RPM 1 Tb

 

Proposed upgrade

Two Asus Strix GTX 970 4 Gb (SLI)

Be Quiet Silent Base 800 (Full of fans.)

Cooler Master Hyper 212 Evo

 

I plan to run OC Genie on my motherboard to overclock the CPU . I do not plan on overclocking the 970s.

 

The question I have is if the PSU will be able to handle the strain.

I've used some PSU calculations and they land inbetween 503W and 613W depending on how I change the number of USB peripherals to wether or not the motherboard and fans are regular or high-end ones.

I'd also like to note that the calculator doesn't have the Asus card, only the nvidia stock one which I believe use more power than than the Asus one.

 

While I'm not completely against buying a new PSU I'd rather avoid it due to having just bought one a while back due to thunder strikes.

 

Any help is welcome.

//W-D

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Greetings, it's time for a overhaul of my system and I need someone to give feedback and thoughts on it.

Current build

PSU: Fractal Design Newton 600W (about 6 months old)

Motherboard: MSI MS-7752, ATX

CPU: Intel I7 3770K 3.5 GHz Ivy Bridge

Ram: 16 Gb of forgotten specifications.

HDD: 128 Gb SSD, 7200RPM 1 Tb

 

Proposed upgrade

Two Asus Strix GTX 970 4 Gb (SLI)

Be Quiet Silent Base 800 (Full of fans.)

Cooler Master Hyper 212 Evo

 

I plan to run OC Genie on my motherboard to overclock the CPU . I do not plan on overclocking the 970s.

 

The question I have is if the PSU will be able to handle the strain.

I've used some PSU calculations and they land inbetween 503W and 613W depending on how I change the number of USB peripherals to wether or not the motherboard and fans are regular or high-end ones.

I'd also like to note that the calculator doesn't have the Asus card, only the nvidia stock one which I believe use more power than than the Asus one.

 

While I'm not completely against buying a new PSU I'd rather avoid it due to having just bought one a while back due to thunder strikes.

 

Any help is welcome.

//W-D

use pcpartpicker.com   it has an automatic Wattage calculator. just find your parts :P

I think you should be ok with the 600W though. just don't overclock too high

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970s are very power efficient, you should be okay. However you don't want your PSU to be running in the 90-100% range all the time - 60-70% is where it performs at its best. Since it's pretty much new you could sell it for close to retail price and spend 20-30 on a 750W PSU :)

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Thanks for the fast replies.

 

Using PCpartpicker I end up with 370W, This would land me at  ~62%. Overclocking would certainly push me a bit farther up the percentage.

 

Would it be reasonable to assume that if I avoid overlocking all together I would be ok?

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  • 4 weeks later...

Due to the christmas season I managed to snag two Zotac GTX970 Extreme edition for a bit lower than the regular price of two Asus Strix GTX970.

 

Using pcpartpicker I land on 497W, will a 800W PSU suffice or should I try going for a 850-900W since I'll be overclocking my CPU?

 

Any other thoughts?

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