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YMTC 3D TLC NAND Flash with Xtacking 4.0 Tested: up to 14.5 GB/s Sequential Read

AleksandarK

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An SSD from Chinese manufacturer Zhitai has demonstrated impressive performance metrics, reaching sequential read speeds of up to 14.5 GB/s. Under the hood, the TiPro9000 2 TB SSD combines domestic YMTC 5th Generation 3D TLC NAND technology with Silicon Motion's SM2508 controller. The drive's architecture features a 2 GB LPDDR4X DRAM chip and two 3D TLC NAND dies utilizing 232-layer YMTC's Xtacking 4.0 architecture. While initial testing revealed peak sequential read and write speeds of 14,527 MB/s and 13,869 MB/s respectively, these rates are sustained through the SLC cache for approximately 24 seconds. Performance testing showed distinct operational phases. After the initial burst speed period, transfer rates stabilize at around 4,000 MB/s for 325 seconds before dropping to 1,700-1,800 MB/s. The drive then demonstrates recovery capabilities, returning to 4,000 MB/s after 259 seconds.

Random performance specifications are equally impressive, with the manufacturer claiming up to 2 million IOPS for reads and 1.6 million IOPS for writes. The TiPro9000's performance metrics position it competitively among top-tier PCIe 5.0 x4 drives. This shows the capabilities of Chinese-manufactured YMTC NAND memory technology paired with Silicon Motion's controller expertise, putting a lot of faith in China-made NAND Flash. With growing needs for AI and big data applications, performant storage systems are becoming key to many systems. However, Chinese companies still need a solid (pun intended) controller to compete with Western technology to complete storage manufacturing. Alibaba is working on a RISC-V-based controller, while InnoGrit has also been sampling controllers. We have yet to see commercial applications based on these two.



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YMTC flash has been reported to be among the most unreliable flash out there. I wouldn't touch anything from this manufacturer until that improves.

Even then... other manufacturers have dropped prices a lot already, so it doesn't seem worth the risk of data loss.
 
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@Evrsr
Reported by whom, exactly? They had one recall for their older 128L NAND due to concerns of data retention, true, but they caught it and issued said recall and those chips were mostly in cheap SATA drives and buyers could get refunds, from what I know. The newer 232L NAND that is in most drives using YMTC flash nowadays was unaffected and I am yet to hear any concerns due to it.
 
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YMTC flash has been reported to be among the most unreliable flash out there. I wouldn't touch anything from this manufacturer until that improves.

Even then... other manufacturers have dropped prices a lot already, so it doesn't seem worth the risk of data loss.
funny, man. so how about 860evo or 990pro:laugh:
 
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funny, man. so how about 860evo or 990pro:laugh:
The 870 Evo was the most problematic. WD SA510 and Adata drives arent the most reliable either

YMTC flash has been reported to be among the most unreliable flash out there. I wouldn't touch anything from this manufacturer until that improves.

Even then... other manufacturers have dropped prices a lot already, so it doesn't seem worth the risk of data loss.
Arent those the really cheap drives with bottom of the barrel components?
 
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So 24 seconds for that speed :)))
 
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let me see those QD1 random 4k numbers
 
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The 870 Evo was the most problematic. WD SA510 and Adata drives arent the most reliable either


Arent those the really cheap drives with bottom of the barrel components?

Unfortunately no. Kingston has picked up YMTC, though others like Lexar - which I have in good standing - and Teamgroup also sell a lot of those.

At least, from my expericence, Kingston has been reliable enough for many years for work machines and stuff I don't want to mess too much with.

@Evrsr
Reported by whom, exactly? They had one recall for their older 128L NAND due to concerns of data retention, true, but they caught it and issued said recall and those chips were mostly in cheap SATA drives and buyers could get refunds, from what I know. The newer 232L NAND that is in most drives using YMTC flash nowadays was unaffected and I am yet to hear any concerns due to it.


This indeed seems to be that flash. I can't find any news of a recall.

Fanxiang, which seems to use YMTC widely, has 6x the 1 star reviews of a budget drive like the WD SN580 (11% vs 2%). So, I'd say the issues are probably not wrong. Some are the same claims of the drive being at 100% active but slow throughput.
 
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@Evrsr
Source in Chinese, but you can translate it. There was, indeed, a recall.
 
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