GTX 980 Ti Sli and X99 700w Plat is it enough?

[SlayerPIN]

Hey Guys,

 

I will buy the new system in october. This is just a plan.

 

The psu is it enough?

Of course with overclock..

 

Cpu: 5820k //4.5-4.8ghz+
Mobo: Asus X99-M WS // 
GPUs: Evga 980ti //classy or sc 1500mhz+
PSU: Silverstone 700W SFX-L // ?
RAM: pass. Min 16gb 
Sound card: creative zx //available
m.2: Samsung XP941 512GB //available
case: Evga Hadron Air // with little mod

.

Water cooling: 

Another case and external psu
Rad: EK xtx 360 //available. Second rad Black Labs GTX 360
CPU: EK Supremacy EVO Full Nickel CSQ //available
Pomp: EK-XTOP D5 Vario - Acetal //available. 
Rez : EK-RES X3 250 //available
GPU : EK-FC Titan X - Acetal

 

Sorry for my bad english.

[Aniallation]

Yes it's more then enough.

[brokencross]

Yes it's more then enough.

700w is enough for two 980Tis? In what world?

850w would be cutting it close, even.

[MrBucket101]

I don't really think it will be enough

 

For ex: The i7 5820k and 2 980ti G1 Gamings, come in at 726W...and that's at stock speeds, no OC.

 

So with the OC, you might be pushing close to 800W.

 

That PSU is platinum though, and YMMV, but I think it might be cutting things a little too close for comfort, but thats just me

 

Take a look at this build, ignore the pricing etc... I was pricing stuff out for my next build

 

but anyways, click on the PCP link for the wattage at the top left
 

PCPartPicker part list / Price breakdown by merchant

 

CPU: Intel Core i7-5820K 3.3GHz 6-Core Processor  ($394.98 @ Newegg) 

Motherboard: Asus X99-DELUXE ATX LGA2011-3 Motherboard  ($386.98 @ Newegg) 

Memory: G.Skill Ripjaws 4 series 16GB (4 x 4GB) DDR4-2800 Memory  ($144.99 @ Newegg) 

Storage: Samsung 850 EVO-Series 500GB 2.5" Solid State Drive  ($164.00 @ B&H) 

Video Card: Gigabyte GeForce GTX 980 Ti 6GB Video Card (2-Way SLI)  ($689.97 @ B&H) 

Video Card: Gigabyte GeForce GTX 980 Ti 6GB Video Card (2-Way SLI)  ($689.97 @ B&H) 

Case: Corsair 750D ATX Full Tower Case  (Purchased For $0.00) 

Power Supply: Corsair Professional 850W 80+ Gold Certified Semi-Modular ATX Power Supply  (Purchased For $0.00) 

Total: $2445.89

Prices include shipping, taxes, and discounts when available

Generated by PCPartPicker 2015-07-13 13:25 EDT-0400

[Aniallation]

700w is enough for two 980Tis? In what world?

850w would be cutting it close, even.

 

 

[MrBucket101]

-SNIP-

Yeah, but those charts, don't take into account an overclock, or the CPU (in some charts), and power draw doesn't exactly scale linearly

 

Round it up, to 600W system load @ reference. Overclocking the system could push it to like 685W under full load. The PSU in theory should be able to handle it, but 15W is kinda close.

 

Plus I'm not so sure I would put my faith in theories, when it comes to hardware of that kind of cost. One mistake, and it could get ugly, real quick

[brokencross]

 

And that's bullshit... A single 980Ti can draw almost 400w on furmark.

[Tim Drake]

furmark.

[brokencross]

 

furmark.

 

Still... It draws quite a bit even in games.

[Tim Drake]

Still... It draws quite a bit even in games.

But furmark is a bad representation.

[brokencross]

But furmark is a bad representation.

It's worst case scenario. Optimally it should represent how much wattage you should have in mind when buying a psu.

[TheCaptain53]

 

I don't know about you, but I wouldn't want to be running my PSU pinned at close to 100% all the time. I would be more comfortable running 65-80%, and that's cutting it fine.

[BigDay]

277w approximately under max load along with the tdp of the cpu which equals 140w

 

[(cpuTdp + gpuTdp) * 2 ] + [(numberOfGpus -1) * gpuTdp]

 

= 834w

 

you will need at least 850w in terms of a psu

 

the formula above takes into account overclocking the cpu and gpu

 

https://www.techpowerup.com/reviews/EVGA/GTX_980_Ti_SC_Plus/28.html

[SlayerPIN]

Thanks for great comments.

Well normal atx psu does not fit.

I have 2 options.

I'll wait sfx 800w+ or change case. I have already axi860.

[SlayerPIN]

Good news.

if not release sfx 800w+ ill buy this case

 

http://www.amazon.com/Rosewill-Legacy-U3-B-Window-Aluminum-MicroATX/dp/B00H8948JU

 

but i'm still search case.