X470 Taichi M2_2 slot spec?

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   Hi,
My Ultimate SU800 128GB no recognized in m2_2 slot.
It only works fine in a M2_1.
But M2_1 can work with a Samsung EVO 970.
Can tell me why?

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Ridly Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Nov 2017 Status: Offline Points: 13	Post Options Post Reply Quote Ridly Report Post Thanks(0) Quote Reply Topic: X470 Taichi M2_2 slot spec? Posted: 07 Mar 2019 at 2:06pm
	Hi, My Ultimate SU800 128GB no recognized in m2_2 slot. It only works fine in a M2_1. But M2_1 can work with a Samsung EVO 970. Can tell me why?

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8907	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 07 Mar 2019 at 2:29pm
	Dear Ridly, Greetings, this is ASRock TSD. X470 Taichi supports two M.2 socket. - 1 x Ultra M.2 Socket (M2_1), supports SATA3 module and PCI Express module. - 1 x M.2 Socket (M2_2), supports PCI Express module. http://www.asrock.com/MB/AMD/X470%20Taichi/index.asp#Specification The ADATA Ultimate SU800 is a SATA module, but M2_2 slot only supports PCIe module. So please install it to M2_1 slot for use. Thanks! All the best, ASRock TSD

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 27458	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 07 Mar 2019 at 3:57pm
	Simply put, you are trying to use a SATA mode M.2 in an NVMe only M.2 slot The M.2 interface can be annoying like that, you have to read the specs of your board to know which M.2 slot to use with what interface drive. Edited by Xaltar - 07 Mar 2019 at 3:59pm


Ridly Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Nov 2017 Status: Offline Points: 13	Post Options Post Reply Quote Ridly Report Post Thanks(0) Quote Reply Posted: 22 Mar 2019 at 11:12am
	Thank for the answer. Now my system is working well!!

brkkab123 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 Dec 2018 Location: USA - Californi Status: Offline Points: 48	Post Options Post Reply Quote brkkab123 Report Post Thanks(0) Quote Reply Posted: 23 Mar 2019 at 12:20am
	Put it this way from my experience with a X470 Taichi Ultimate mobo and a 1TB Samsung 850 EVO m.2 ssd. In m.2. slot 2 (bottom) = Unrecognized. in m.2 slot 1 (top) It works perfectly fine. Due to Samsung Magician's Rapid Mode, older drives can get well over 2000 mbps reads, so no real reason to need a newer model ssd to me.

brkkab123 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 Dec 2018 Location: USA - Californi Status: Offline Points: 48	Post Options Post Reply Quote brkkab123 Report Post Thanks(0) Quote Reply Posted: 23 Mar 2019 at 12:26am
	P.S. On these mobo's if you use m.2 slot 1, you're video card still run's at x16 speed. That speed only lowers if you use 2 video cards.

gizmic Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 13 Jun 2018 Location: Hong Kong Status: Offline Points: 677	Post Options Post Reply Quote gizmic Report Post Thanks(0) Quote Reply Posted: 23 Mar 2019 at 2:05pm
	you pretty much got it all wrong x470 taichi m.2 doesn't change speeds when using 2 video cards 850 evo will only work on the first slot because that slot supports nvme(pcie) & sata interface m.2 drives. 850 are sata interface you should only measure speeds with its raw performance not in any form of caching mode as you'll not always get those speeds all the time. 850 tops at 560MB/s sata limit. comparing with any pcie type its worlds apart already