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kittiyut

macrumors 6502
Original poster
Oct 28, 2007
310
27
What slot number would be left open for use if the Afterburner Card & Two Radeon Pro Vega II Duo are installed?
 

kittiyut

macrumors 6502
Original poster
Oct 28, 2007
310
27
Oh no! So if I want to install the Sonnet M.2 4x4 PCIe Card to fully maximize its potential speed, then I'll have to give up the Afterburner card? Or is that card in x8 slot as well?
 
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Virtuoso

macrumors regular
Feb 21, 2008
169
36
Seattle
The Afterburner is a 16x card which comes installed in slot 5 from Apple. You can still get almost 8GB/s out of a x8 slot though.
 
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OkiRun

macrumors demi-god
Oct 25, 2019
970
575
Japan
Oh no! So if I want to install the Sonnet M.2 4x4 PCIe Card to fully maximize its potential speed, then I'll have to give up the Afterburner card? Or is that card in x8 slot as well?

The pictures for the 'Overview' section show two Vega II Duos and the Afterburner Card installed - leaving 3 slots open. One half -length and two single-wide.

Mac Pro has eight PCIe x16* sized slots that accept many different types of PCIe cards:
  • Slot 1: up to x16 lanes (double-wide)
  • Slot 2: up to x8 lanes (double-wide)
  • Slot 3: up to x16 lanes (double-wide)
  • Slot 4: up to x16 lanes (double-wide)
  • Slot 5: up to x16 lanes (single-wide)
  • Slot 6: up to x8 lanes (single-wide)
  • Slot 7: up to x8 lanes (single-wide)
  • Slot 8: up to x4 lanes (half-length)
Slot 8 is x4 in size.
 
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Virtuoso

macrumors regular
Feb 21, 2008
169
36
Seattle
The pictures for the 'Overview' section show two Vega II Duos and the Afterburner Card installed - leaving 3 slots open. One half -length and two single-wide.
The top x4 slot is taken by the Apple I/O card. The other two are x8 slots.
 
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OkiRun

macrumors demi-god
Oct 25, 2019
970
575
Japan
The top x4 slot is taken by the Apple I/O card. The other two are x8 slots.
Will not the
Sonnet M.2 4x4 PCIe Card fit within either slot 6 or 7?

=============

Nope. I was in error.

Sonnet’s M.2 4x4 PCIe card enables you to mount four M.2 NVMe PCIe SSDs(1) onto a single x16 card slot.

Which begs the question: Which internal ssd best fits within the remaining slots given the afterburner and two Vega II duos.....
 
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