If on the Maximus VIII Hero Alpha board I have a 980Ti in the first PCIe X16 slot (gray), and I put the Angelbird Wings PX1 PCIe x4 M.2 Adapter with a Samsung 950 pro on it in the second PCIe X16 slot (gray), will the 980Ti run at X16 speed, or will it run at X8? Also, will I have to change something in the BIOS for the Angelbird in the PCIe configuration to make it run at X4?
It would be better if M.2 drive is run off the M.2 slot or adapter is installed on the last PCIe slot getting lanes from the chipset not from the CPU. In this way, you will get x16 for the graphics card.
Live your life the way you want, not the way others want!
EasyLover, if I put the adapter card in the third PCIe slot (the black one) won't the 950pro run slower than if it's getting lanes from the CPU in the second slot? The main reason I want the adapter card is to help keep the 950 pro cooler.
No, you don't need to do anything in the BIOS for the adapter card to run normally.
And no, there is no real performance difference between CPU PCIe 3.0 lanes and chipset PCIe 3.0 lanes.
All you need to keep the 950 Pro cool is one of two things: 1. A fan pointed directly at it. Even a 60mm fan would work. I use a 120mm and I peeled the sticker off the drive. 2. One of those Raspberry Pi heat sink kits with three heat sinks.
Either of those will prevent the 950 Pro from thermal throttling and keep it running at peak performance.