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Old 03-17-2019, 03:57 AM   #9
Jerry
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Join Date: May 2007
Location: Orange City, FL
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I just want to mention that you are talking about two different types of boards here.
You are currently using an X99. This board utilizes a chip that affords 40 PCI-E lanes from the CPU.

The board you are looking at the Z390 chipset, gives you 16 PCI-E lanes from the CPU. So, if you decide that you want to work in 3840x2160 50p, you will need an 8x I/O card to view this
on an external monitor. The Z390 chipset would accept the 8x card, but your graphics card would be reduced to 8x. You may or may not notice the difference.

If you are only using a 16X lane GPU and a 4X lane I/O card, the Z390 chipset should be able to handle that with the right motherboard. Each manufacturer modifies the Intel chipset to suit their boards. Usually, the more expensive boards have more items available; however, all of the options will not be able to be used at the same time.

Here's an example. My Asrock board(Z97) came with 10 Sata ports. Asus boards at that time were normally maxing out at 8 Sata Ports. Normally, only providing 6.

If you want the Z390 and you need more lanes, look into the Asus WS 390 Pro or Supermicro Workstation boards. These will be more expensive due to what they do.

More than likely, you will be able to find an Asus board to fit your needs.
You need to decide the components, and lane counts, that will be added to the board prior to selecting the board. If you intend on using M.2 drives, PCI-E lanes need to be calculated into that decision as well.

Do the math before buying a board.
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