Modular PSU for 2x8-pin GPU

[Steve N. Mavronis]

I'm looking to build a single Nvidia 980Ti aftermarket overclocked GPU based mITX system. Do all modular power supplies have separate connections for 2x8pin power to the GPU? Sorry if this is a dumb question. I've never used modular PSU before. They look like the connector sizes are all there but want to be sure and not assume anything.

 

The specific PSU's that I'm interested in are either EVGA 650GS and EVGA 750G2 for single GPU mITX systems with 16GB overclocked RAM and i7-4790K overclocking with an SSD plus an HDD.

 

As a backup plan possibly EVGA 850G2 (or above) for mATX systems with dual-GPU SLI capability if I end up going in that direction but I doubt it. 

[Guest]

The EVGA GS 650W has 4 x 6+2 pci-e connectors on two cables. So you can use them as 6 pin or 8 pin depending on what your graphics card needs.

 

If you are going mitx then you can only run a single card anyway as those boards only have a single pci-e slot.

 

The EVGA GS would probably be the best choice as it is pretty small in depth.

 

Review:

 

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story2&reid=424

[Steve N. Mavronis]

The EVGA GS 650W has 4 x 6+2 pci-e connectors on two cables. So you can use them as 6 pin or 8 pin depending on what your graphics card needs. If you are going mitx then you can only run a single card anyway as those boards only have a single pci-e slot. The EVGA GS would probably be the best choice as it is pretty small in depth.

 

Review:

 

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story2&reid=424

 

Thanks and yeah I mentioned mITX just to reinforce the single GPU when it came to power requirements. Even if I went mATX I'm only interested in single GPU but good to have some overhead just in case with an 850W. For mITX system (using the Phanteks Evolv ITX) don't know if 650W would be cutting it close with overclocking and a couple hard drives attached. That's why I might opt for the 750W yet if that's overkill the 650W would be better and a bit cheaper plus the extra room for cabling between the PSU and HDD cage.

 

Here is my planned build parts list for example:

• Phanteks Enthoo Evolv ITX Black Window Mini-ITX Tower Computer Case PH-ES215P_BK
• ASUS Z97i-Plus Z97I-PLUS
• G.SKILL Trident X Series 16GB (2 x 8GB) 240-Pin SDRAM DDR3 2400 (PC3 19200) F3-2400C10D-16GTX
• Intel Core i7-4790K Haswell Quad-Core 4.0GHz LGA 1150 Desktop Processor (Micro Center) BX80646I74790K
• Noctua NH-U12S (w/NF-F12 PWM SSO2-Bearing CPU Cooler NH-U12S
• Phanteks PH-F140SP_BK 140mm Case Fan PH-F140SP_BK
• EVGA GeForce GTX 980 Ti Classified ACX 2.0+ 06G-P4-4998-KR
• EVGA SuperNOVA 650 GS 80 Plus Gold Modular Power Supply ($25 Rebate Card) 220-GS-0650-V1
• SAMSUNG 850 EVO 2.5" 250GB SATA III 3-D Vertical Internal Solid State Drive (SSD) MZ-75E250B/AM
• Western Digital Blue 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive WD10EZEX
• Pioneer USB 3.0 BD/DVD/CD Portable Burner BDR-XD05B
• Corsair Gaming K70 Mechanical Gaming Keyboard - Red LED - Cherry MX Red Switches (Amazon) CH-9000069-NA
• Corsair Raptor M30 Gaming Mouse (Amazon) CH-9000042-NA

[Guest]

I can't see you needing more than 650W even with overclocking.