Well the TR4 socket is just so huge that its just unlikely we ever going to see a itx board for it.
Next to that, you also need an 8 phase vrm design, which you eventually could do with an add-in board.
But still…, there the socket is just too huge, and it would not make any sense to develop either.
Even if they could technically do it, it would just cost way too much money to design and develop it.
They never gonne make that money back, so it wont be interesting.
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A ITX TR4? For what possible use case would that ever be for?
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Notebook form factor portable rig?
Dunno…
I think so too. I feel like an mATX board for Threadripper is crazy enough already. 
Scale out storage nodes for zfs cluster…
Probably be fine using Ryzen 3/5… guess if I want ITX thats the best bet.
Asrock X399 Taichi vrm overview.
Also counts for the X399M Taichi.
Main cpu Vcore vrm.
- pwm: IR35201 in 8+0 phase mode, so 8 true phases.
- powerstages: IR3555 60A fully intergrated powerstages.
- Inductors: 60A.
- output caps: Tantalum´s.
Soc vrm:
- pwm: a second IR35201 pwm is providing 3 phases for controling the SOC vrm.
- powerstagesa: IR3555 again.
Memory vrm:
- pwm: 2x uP1647P pwm’s providing 2 phases for each set of 4 dimm slots.
- mosfets: Sinopower SM7341EHKP dual-N Mosfets.
So thats why Asrock is marketing it as an 11 phase board.
Because there are two IR35201 pwm´s on it.
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Gigabyte Aorus X399 Gaming 7.
Main Cpu Vcore vrm.
- pwm: IR35201 8+0 phase mode.
- powerstages: IR3556 50A.
- Inductors: 76A Cooper bussmann.
- output caps: Tantalum’s poscaps.
SOC vrm:
- pwm: 2 phases controlled by a second IR35201 pwm.
- powerstages: IR3556.
Memory vrm:
- pwm´s 2x IR3570 in 2+1 phase mode.
providing 2 phases for each set of 4 dimm slots.
And the +1 rail is used to controll DDR4 VPP rail. - powerstages: IR3553. 40A
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Dont be fooled by the gigabytes 10 amp less per stage… the inductors really matter alot… the 76A Cooper Bussmans will probably make the Aorus edge the taichi
Shame they don’t specify what tantalum caps they use. They are one of the most important parts of the system and one of the most likely to fail or age and go out of spec over time.
I wouldnt be too concerned about that.
I would have liked to see IR3555´s or IR3575´s rather.
But Gigabyte is using those IR3556’'s on allot of their higherend boards,
like the Gigabyte X99 SOC Champion for example.
They are basiclly decent enough, but yeah there are still beter powerstages there.
The IR3575 60A 125°C and IR3555 60A 125°C powerstages are pretty much the best in the buisness.
Asus loves to use those IR3555’s on their topend Rampage Extreme boards,
and their topend gpu´s.
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If only the catered to the wishes of us power delivery puritans
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I’m so lost…
Where did Misty and I lose you
Well mostly I’m just very new to the world of power delivery but paying closer attention these days due to some wishful builds taking shape in my head (SFF stuff, not high power delivery but heat and removal constraints). Part numbers of components like the inductors or VRM components… I just don’t know them. I’m sure there’s something of a primer out there somewhere but I haven’t had the motivation to do that sort of research yet.
I am at least aware that all the IR numbers are International Rectifier and I’ve been trying to watch Buildzoid’s teardowns via YT to get a passing familiarity but he goes pretty quick and seemingly under the assumption that his audience knows at least a good portion of what he does.
But I am interested, so the post was also partly a tracking one to keep atop of the thread in hopes to absorb new knowledge on the topic. Plus anything TR is interesting right now given the shakeup in HEDT land.
It only really matters if you want to overclock, otherwise all of these boards will be fine.
So I’ve been looking at boards, and on Newegg there is a 1 star review for one TR mobo which states that it’s basically next to impossible to install W10 on TR systems at this point in time due to USB compatibility issues.
@MisteryAngel Can you comment on this?
Then what has every reviewer and everyone who bought one been doing? Only Linux? Lul
A single review points to personal idiocy more than a platform issue.
Assuming you meet this one?
Guy is talking out his ass. No clue what he is talking about. I think he meant to say Windows 7. Which requires USB 2 unless you get the patched version for USB 3.
Other issues I’d put down to it just being a new platform and one that is extremely different from what has come before. Never be an early adopter lol
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I figured as much considering other reviews are generally favorable, but at the same time I thought “maybe he got a board with an older version of the BIOS” or some such.
Good to know he’s just a moron.
I got the ASRock X399 Taichi mobo. I like it for the I/O connectivity and TR for all those PCIe lanes. I have some add in cards like a HHHL SSD and capture card on the way. I also plan to add another GPU, hoping pricing comes down a bit soon.
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