Question PSU suggestions for i7-8700k 8+4 pin CPU connection

[christian_94]

I just upgraded to an i7-8700k CPU with an ASRock Z390 Taichi motherboard. I have an EVGA Supernova P2 750W 80+ Platinum PSU, which I know would support the 8+4 CPU socket on the motherboard, but I can't find the second CPU cable that came with the PSU. I am just going to install this in a secondary build, and so I want a replacement PSU that will work for the build. price range up to $125, I don't do anything past gaming and internet browsing/downloading so don't need some crazy thing. I am just not familiar with all the components acronyms so don't know what to search for exactly.

list of parts

PCPartPicker Part List: https://pcpartpicker.com/list/xX2p6s

CPU: Intel - Core i7-8700K 3.7 GHz 6-Core Processor
CPU Cooler: Corsair - H100i 77 CFM Liquid CPU Cooler ($169.89 @ Amazon)
Motherboard: ASRock - Z390 Taichi ATX LGA1151 Motherboard
Memory: Corsair - Vengeance LPX 16 GB (2 x 8 GB) DDR4-3000 Memory ($98.99 @ Amazon)
Storage: Samsung - 256 GB M.2-2280 Solid State Drive ($228.90 @ Amazon)
Storage: Samsung - 840 EVO 500 GB 2.5" Solid State Drive ($298.90 @ Amazon)
Storage: Kingston - SSDNow KC400 512 GB 2.5" Solid State Drive
Storage: Kingston - SSDNow KC400 512 GB 2.5" Solid State Drive
Storage: Western Digital - Green 5 TB 3.5" 5400RPM Internal Hard Drive ($280.78 @ Amazon)
Video Card: Asus - GeForce GTX 1070 Ti 8 GB ROG STRIX Video Card
Case: NZXT - Source 530 ATX Full Tower Case
Operating System: Microsoft - Windows 10 Pro OEM 64-bit ($145.00 @ Amazon)
Monitor: Dell - U2718Q 27.0" 3840x2160 60 Hz Monitor ($449.90 @ Amazon)
Mouse: Logitech - G502 Proteus Spectrum Wired Optical Mouse
Other: SilverStone Tek 2.4G Wireless Power Remote with Power/Reset Function and Audio Feedback ES02-PCIE ($29.54 @ Amazon)
Other: Sk Hynix 256GB SSD M.2 2280 (Purchased For $69.94)

 

[Barty1884]

Most quality 750W units and up should have at least 2x EPS cables with 4+4 pin connectors (or 1x8pin static and 1x 4+4).
The Focus+ gold from SeaSonic would fit the bill - and the 850W unit is only marginally more than the 750W.
https://pcpartpicker.com/products/compare/64cMnQ,jWFXsY/

The EVGA SuperNOVA G3 750W is another solid option, and has a nice rebate bringing it under $100 when all said and done.
https://pcpartpicker.com/product/dM...ed-fully-modular-atx-power-supply-220-g3-0750


Two points though:

1. You do not need to populate the additional 4pin. It's perfectly adequate for stock operations, and moderate overclocking without. Improved power delivery for really pushing those overclocks though.
2. Depending on the power requirements of this other system, you might want to consider an either an entire replacement cable kit for the P2, or just a replacement EPS cable and pick up a cheaper unit for the second system*.

*Example:
You don't appear to have any specific color theme going on.... but an example, a white kit (ATX, 2x EPS, PCIe and SATA) = $80.
https://www.amazon.com/EVGA-100-CW-...+p2+cable&qid=1556726565&s=electronics&sr=1-3

CX450 can be had for $32, assuming it's capable for the secondary system.
https://pcpartpicker.com/product/Q7...onze-certified-atx-power-supply-cp-9020120-na

Total spend within budget, and you get a cosmetic upgrade for the main system too.

You could probably reach out to EVGA for just a replacement EPS cable, as I'm not aware of anywhere retail you can buy just one.

 

[christian_94]

Most quality 750W units and up should have at least 2x EPS cables with 4+4 pin connectors (or 1x8pin static and 1x 4+4).
The Focus+ gold from SeaSonic would fit the bill - and the 850W unit is only marginally more than the 750W.
https://pcpartpicker.com/products/compare/64cMnQ,jWFXsY/

The EVGA SuperNOVA G3 750W is another solid option, and has a nice rebate bringing it under $100 when all said and done.
https://pcpartpicker.com/product/dM...ed-fully-modular-atx-power-supply-220-g3-0750


Two points though:

1. You do not need to populate the additional 4pin. It's perfectly adequate for stock operations, and moderate overclocking without. Improved power delivery for really pushing those overclocks though.
2. Depending on the power requirements of this other system, you might want to consider an either an entire replacement cable kit for the P2, or just a replacement EPS cable and pick up a cheaper unit for the second system*.

*Example:
You don't appear to have any specific color theme going on.... but an example, a white kit (ATX, 2x EPS, PCIe and SATA) = $80.
https://www.amazon.com/EVGA-100-CW-...+p2+cable&qid=1556726565&s=electronics&sr=1-3

CX450 can be had for $32, assuming it's capable for the secondary system.
https://pcpartpicker.com/product/Q7...onze-certified-atx-power-supply-cp-9020120-na

Total spend within budget, and you get a cosmetic upgrade for the main system too.

You could probably reach out to EVGA for just a replacement EPS cable, as I'm not aware of anywhere retail you can buy just one.

Thank you for all the information.