X570 Taichi - daisy chain or T topology DIMM?

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   The general consensus, based on pre-release pictures from around June is that the Taichi connects the DIMM slots in parallel. See Buildzoid's analysis:
 https://www.youtube.com/watch?v=OUtvsAmD3Ws#t=21m13s

I'm looking at the high quality pic from overclock.net:
https://www.overclock.net/forum/11-amd-motherboards/1730162-official-asrock-x570-overclocking-support-thread.html
and it's really unclear to me at this point whether we're dealing with a serial or parallel configuration.

Furthermore, the manual recommending pairs A2, B2 for 2 DIMMs (like most other motherboards out there) makes me think this is a daisy chain configuration (series). Any info on this?

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foxx1337 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Jul 2019 Location: Munich Status: Offline Points: 74	Post Options Post Reply Quote foxx1337 Report Post Thanks(0) Quote Reply Topic: X570 Taichi - daisy chain or T topology DIMM? Posted: 14 Oct 2019 at 10:11pm
	The general consensus, based on pre-release pictures from around June is that the Taichi connects the DIMM slots in parallel. See Buildzoid's analysis: https://www.youtube.com/watch?v=OUtvsAmD3Ws#t=21m13s I'm looking at the high quality pic from overclock.net: https://www.overclock.net/forum/11-amd-motherboards/1730162-official-asrock-x570-overclocking-support-thread.html and it's really unclear to me at this point whether we're dealing with a serial or parallel configuration. Furthermore, the manual recommending pairs A2, B2 for 2 DIMMs (like most other motherboards out there) makes me think this is a daisy chain configuration (series). Any info on this?
	Ryzen 3900X, Taichi X570

Ray62 Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 01 Jul 2018 Location: Germany, Berlin Status: Offline Points: 706	Post Options Post Reply Quote Ray62 Report Post Thanks(0) Quote Reply Posted: 16 Oct 2019 at 4:02am
	The Asrock X570 Taichi is known as one of the very few boards with T topology, like the X370 and X470 Taichi. The pictures doesn't show all. And the QVL shows some 3600MHz RAM DS modules for 4 DIMM configurations. I think, the "manual recommending pairs A2, B2 for 2 DIMMs" is the standard print in all manuals. Here is a list with infos for a lot of boards: https://docs.google.com/spreadsheets/d/1wmsTYK9Z3-jUX5LGRoFnsZYZiW1pfiDZnKCjaXyzd1o/htmlview?sle=true#gid=2112472504 Hmm, it seems that all Asrock X570 boards have T top. And it also seems, that the topology is not so important for Zen2.
	Asrock Fatal1ty X370 Professional Gaming Offline Under test: MSI X570_MEG_ACE \| AMD Ryzen 9 3900X \| Scythe Mugen5 \| 2x16GB F4-3200C14D-32GTZ@3466 \| ASUS GeForce GTX 1080 Ti FE

shmerl Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 23 Oct 2017 Status: Offline Points: 612	Post Options Post Reply Quote shmerl Report Post Thanks(0) Quote Reply Posted: 16 Oct 2019 at 1:51pm
	I'm using 4 sticks successfully (at 3600 MHz) with X570 Taichi. Specifically this set: http://www.gskill.com/specification/165/168/1536288991/F4-3600C16Q-32GTZKK-Specification

foxx1337 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Jul 2019 Location: Munich Status: Offline Points: 74	Post Options Post Reply Quote foxx1337 Report Post Thanks(0) Quote Reply Posted: 16 Oct 2019 at 5:56pm
	That Google spreadsheet is based on Buildzoid's analysis I linked before. Still not really convinced, but quad ranked @ 3600 MHz seems a more reasonable argument.
	Ryzen 3900X, Taichi X570

John29 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 31 May 2019 Location: uk Status: Offline Points: 90	Post Options Post Reply Quote John29 Report Post Thanks(0) Quote Reply Posted: 28 Oct 2019 at 5:38pm
	I'm using 4 sticks successfully (at 3600 MHz) with XX70 Taichi TeamGroup Dark Pro "8Pack Edition" 4x8 32GB PC4-25600C14 3200 running at 3600 at 1.375 Ryzen 3700X

foxx1337 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Jul 2019 Location: Munich Status: Offline Points: 74	Post Options Post Reply Quote foxx1337 Report Post Thanks(0) Quote Reply Posted: 31 Oct 2019 at 8:20pm
	Thanks. Still doesn't mean much. Buildzoid successfully overclocked different 4x8 or 2x8+2x16 configurations on various "known" daisy chain motherboards from MSI or Gigabyte.
	Ryzen 3900X, Taichi X570

foxx1337 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Jul 2019 Location: Munich Status: Offline Points: 74	Post Options Post Reply Quote foxx1337 Report Post Thanks(0) Quote Reply Posted: 02 Nov 2019 at 6:55pm
	Buildzoid took his retail Taichi apart and it's a daisy chain config: https://www.youtube.com/channel/UCrwObTfqv8u1KO7Fgk-FXHQ/community?lb=UgwjG8OxnKAGLMUVyQB4AaABCQ https://i.imgur.com/v6LLuTf.png
	Ryzen 3900X, Taichi X570

Ray62 Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 01 Jul 2018 Location: Germany, Berlin Status: Offline Points: 706	Post Options Post Reply Quote Ray62 Report Post Thanks(0) Quote Reply Posted: 02 Nov 2019 at 7:58pm
	So just the ES board he used in his first review had T-Top. Could be seen as an indicator, that the topology is not so important for Zen2. Regarding the PCB layout, a better placement for the chipset and the USB 3.2 Gen1 Header would give a higher benefit as T-Top anyway...
	Asrock Fatal1ty X370 Professional Gaming Offline Under test: MSI X570_MEG_ACE \| AMD Ryzen 9 3900X \| Scythe Mugen5 \| 2x16GB F4-3200C14D-32GTZ@3466 \| ASUS GeForce GTX 1080 Ti FE