This is an interesting review, different to the typical devices.
I like the idea of using a bridge chip, and I feel that should be the default on multi device cards, but I am not a fan of them slapping on a raid controller, I would rather this ran in some kind of dumb mode, where each device is detected individually as if was direct on a board.
I think what I would like to see is a card designed for 4x slots (as these are far more readily available) which support 2-4 M.2 using a bridge chip so no bifurcation needed and overprovisoning of lanes. Also priced at consumer level, dont have a controller chip.
I have two questions for
@W1zzard
1 - On the ASPM testing, which specific BIOS options are enabled, is it just the native ASPM support, or are you turning them all on? As I have been fiddling with this stuff lately in trying to manage M.2 temps.
2 - Does the card have an option allowing some kind of dumb passthru mode presenting individual drives separately directly to OS including SMART? if not how would you use the drives separately?
All the attempted Intel boards share some kind of built-in bifurcation, either for x8+x8 slot configuration, or providing 5.0 M.2 slot (practically doing the same thing).
All the necessary routing and switching logic required may be a curse here.
@W1zzard
Is there any chance you could verify link negotiation on a simpler LGA1700 board, i.e. some PCIe 5.0 B760, or entry Z690?
Yep, I suspect this Intel issue will go away on Z890 if they do away with that lane split.
Also perhaps this could be tested on a Z690, to see if it stays as 16 lanes, as there is no built in mode that you described. It would still be Gen 5. As the first 16x slot is Gen 5.
ASRock Z690 Steel Legend has no lane sharing at all with the 16x PCIe slot, it doesnt share with 2nd PCIe either. So would be a good choice. But I expect there is other Z690 or B chipset boards that have no lane sharing.
Those who really need this won't satisficed by the pathetic 2 year warranty.
Yeah whats the deal with that, dont they have faith in their own kit? For something costing $1500 its awful.