First new build in long while - PSU Question

[ykaeric]

Building a new desktop using some new parts and some existing, hoping for feedback on if my existing PSU will work for the new MB with GPU.

CPU: Intel i7-6700K (new)
MB: MSI Z170A XPower Gaming Titanium Edition (new)
GPU: MSI GeForce GTX 970 DirectX 12 GTX 970 GAMING 4G (existing)
RAM: G. Skill DDR 4 16GB (new)
PSU: Corsair Gold AX750 (existing)
Case: Cooler Master HAF (existing)
SSD: Samsung 950 Pro M.2 512GB (boot) (new)
SSD2: Toshiba SATA 256GB (existing)
SSD3: Intel 80 GB (existing)
HDD: Seagate 1TB (existing)

My concern is the MB seems to require a lot of power connectors (for overclocking and gaming) and that I won't have enough to then power the GPU which requires a 6-pin and 8-pin.

I'm also open to an alternate MB but am looking for one that supports 2 M.2 slots for future expansion.

I run games on this PC as well as massive Excel spreadsheets for work. I'm reaching a size in Excel that my current setup (most of above, but running an Intel -i7 930 and 16GB RAM) can't power through the sheer volume of data and am looking to power up to tackle those jobs.

At same time, looking to play the newest games and not worry about system limitations. I've been able to play most everything up until the new Batman and Fallout 4 arrived and am now looking to make an upgrade that will run the next four to five years with modest updates to the system during that time (new SSDs, new GPU or SLI and second GTX 970), new PSU if necessary. Also, want to be able to play my son in some games from the PC to the Xbox One with some of MS new cross platform gaming features.

Appreciate the feedback - specifically to the PSU question but also for any system suggestions.

 

[smorizio]

msi and other high end gaming mb that do more then two way sli will have two or more pci power ports. most times it an eight pin as power 1 and 4 pin named power two. the power two pin is not used unless you load down the pci slots with a lot of video cards and one pci power plug cant take the amp load. with some older power supplys...email the vendor and see when they were haswell supported. some units will sleep fine and some power supply wont. it depends on the circut used on the 5 volt rail. some 5v rail cant go down as low as haswell and skylake does in sleep mode..when it cant the mb will power off.

 

[smorizio]

if your unit is one that cant go that low all you do is in the bios turn off haswell/skylake low s sleep mode.

 

[ykaeric]

Thanks Smorizio

I purchased the Corsair PSU about 3 years ago. http://www.corsair.com/en-us/professional-series-gold-ax750-80-plus-gold-certified-fully-modular-power-supply

From what I understand of your response, by running the 6 pin and 8 pin to the MB, that will provide power to the GPU and I don't need to run from PSU to GPU when I've run those to the MB instead. Is that correct?

Really appreciate the feedback!

 

[smorizio]

http://www.corsair.com/en-us/support/faqs/power-supplies
no with gpu all of them the first 75v is from the pci slot. with more then two large gpu to keep the mb slots at 75v and from having the 8 pin connector melt from to much current draw gaming mb have to add another power plug. if yoyr using one or two gpu you just use one 8 pin pci power plug on the mb and then plug in the gpu power plugs.