Use 16x PCIe Card in 8x Slot Voltage Question

[WaltX]

I'm cobbling together some available parts that I've used in previous builds to set up a multiseat linux pc. The hardware available for this project is:

-- MSI Z170A-SLI motherboard (no onboard graphics) https://www.msi.com/Motherboard/Z170A-SLI.html
-- Pentium G4500 processor
-- 16GB HyperX memory
-- BeQuiet 600w power supply

I have no compatible graphics cards, so I will be buying the cards separately to complete the project. The pc won't be used for gaming--just web browsing, so the graphics don't have to be anything special. I have learned that Nvidia cards are much better supported in linux, and so with this in mind, I have two inexpensive options for the graphics cards:

GeForce GT 710 - 2GB DDR3 (this card is PCIe 2.0 x16)
https://www.msi.com/Graphics-card/GT-710-2GD3H-LP.html

GeForce GT 710 - 2GB DDR3 (this card is PCIe 2.0 x8)
https://www.asus.com/Graphics-Cards/710-2-SL/

Both of these graphics cards draw only 19 watts of power.

The MSI motherboard has 3 PCIe 3.0 slots which support x16/x0/x4 and x8/x8/x4 modes. As this will be a two-set setup, I will only be using the first two PCIe slots in x8/x8 mode.

Graphics cards have never been a point of emphasis in any of my previous builds, so I'm not particularly well versed in graphics.

So, here are my questions:

-Does anyone see any problems in drawing 19 watts from two PCIe slots in x8/x8 mode? Is enough power provided in x8/x8 mode?

-Is there any advantage in using two x8 cards in terms of stability? As the motherboard will be using x8/x8 mode, would it be better to use an x8 card as opposed to an x16 card?

-Will two x16 cards work just as well as two x8 cards in x8/x8 mode?

-Would there be any advantage in using two x16 cards as opposed to two x8 cards?

 

[varkanoid]

I'm cobbling together some available parts that I've used in previous builds to set up a multiseat linux pc. The hardware available for this project is:

-- MSI Z170A-SLI motherboard (no onboard graphics) https://www.msi.com/Motherboard/Z170A-SLI.html
-- Pentium G4500 processor
-- 16GB HyperX memory
-- BeQuiet 600w power supply

I have no compatible graphics cards, so I will be buying the cards separately to complete the project. The pc won't be used for gaming--just web browsing, so the graphics don't have to be anything special. I have learned that Nvidia cards are much better supported in linux, and so with this in mind, I have two inexpensive options for the graphics cards:

GeForce GT 710 - 2GB DDR3 (this card is PCIe 2.0 x16)
https://www.msi.com/Graphics-card/GT-710-2GD3H-LP.html

GeForce GT 710 - 2GB DDR3 (this card is PCIe 2.0 x8)
https://www.asus.com/Graphics-Cards/710-2-SL/

Both of these graphics cards draw only 19 watts of power.

The MSI motherboard has 3 PCIe 3.0 slots which support x16/x0/x4 and x8/x8/x4 modes. As this will be a two-set setup, I will only be using the first two PCIe slots in x8/x8 mode.

Graphics cards have never been a point of emphasis in any of my previous builds, so I'm not particularly well versed in graphics.

So, here are my questions:

-Does anyone see any problems in drawing 19 watts from two PCIe slots in x8/x8 mode? Is enough power provided in x8/x8 mode?
More than enough
-Is there any advantage in using two x8 cards in terms of stability? As the motherboard will be using x8/x8 mode, would it be better to use an x8 card as opposed to an x16 card?
No
-Will two x16 cards work just as well as two x8 cards in x8/x8 mode?
Yes
-Would there be any advantage in using two x16 cards as opposed to two x8 cards?
No

 

[DragonQ]

Only two cores for a multi-seat system? Hmm.

 

[WaltX]

Varkanoid, DragonQ thanks for the super-quick responses!

I realize two cores may be a bit slow, but we'll just see. I'll switch it out for an i3 6320 from another build if it's too slow!