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Thanks Mule for a excellent article! I have worked in storage industry for 10+ years designing NAND and various SSD based products. It was delightful to read a industry level article here.

My 2 cents, on comments below. I would not worry about Optane too much ( have spend many years on it). To me it is a great science project, but when it comes to TCO or Dollar cost it is just going to be a solution for any hyperscalers.

One area to watch is CXL, this interface will enable companies like Micron to designer a cheaper DRAM and put it on a PCIe interface (sorry if this sounds too nerdy). And this will be a nail on coffin to some projects like Optane in long run. Plus, I have no hopes on Intel doing anything right given their sell of memory business to SK and merging Optane to their DataCenter. For a second, one can imagine if I am the VP of the datacenter group, where would I put Optane in the things of problem I need to fix.....geez I guess would be pretty last for me given all the other woes :).

Noob questions,

1. In the excel snapshots of companies, what does Weight % mean?

2. Any key non-USA tech companies you like other than Lam Research there? Specially looking to the ones who will be supplying to China?

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I don't worry about Optane at all - I just write about it from time to time just so I can make myself not sound like I hate Intel too much. It is a great science project, and maybe some extremely tail use cases will use it... but not 99% of all use cases.

I really like and have been focused on CXL - and versus CCIX.

and 1) % Weight is Market Cap weight - I made this into an imaginary portfolio to add all the stocks up and then sum it at the bottom. This helps make weighted average metrics that I can compare stocks to which flows into the Ranker

2) ASM is something I look over and over at. ASML of course but the stock is kind of hitting bubble levels unless you think EUV WPM capacity will be like 2x today's w/o any kind of increase in thruput. ASM is the second player in ALD that is EU based, which of course really helps. Tokyo Electron is the Japan based player. I also like Israeli semicap (CAMT) as they are ofc non-US.

Always happy to chat - and thank you! Please make sure to call out anything in storage that looks meh. I am still learning.

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Yeah CXL is winning the race here.

Thank you so much for responding! I will watch out for any storage related stuff :)

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What do you think of HSMC failing and Tsinghua defaulting (YMTC parent)? Also another memory question; we've started seeing stuff like Optane actually go into racks. It populates channels where DIMMs would be but serves a function between memory ranks - do you think it materially cannibalizes DRAM this cycle?

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I’ve been following YMTC parent but I don’t really know what the end state game is there. Their 128 NAND is legit, and despite their financial woes China will prop it up.

Optane as a hybrid technology is more a replacement for even faster NAND than DRAM in my opinion. DRAM at EOD is most important for limiter many of the fastest applications, and that would scale terribly onto Optane. I think it would be a larger impact on NAND than the other way around

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Awesome thanks!

If you have any good evidence of the 128L being legit that would be awesome but no big deal if not... tough to get transparency without visiting Shanghai I guess.

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I have never seen a teardown of 128Layer YMTC NAND in the wild - but I have taken everything they have said at face value. It is really hard to know if it's real or not but for now I am not going to say "hey this is clearly a fraud" for something I have no reason to believe is.

I would love to see it out in the wild that is for sure.

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Thanks for the insight!

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