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Team Group T-Force Cardea A440 Pro 2 TB

W1zzard

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The Team Group T-Force Cardea A440 Pro is based on the magical combination of a Phison E18 controller and Micron 176-layer 3D TLC flash. In our review, the drive achieves performance levels that are among the best we've ever seen. Team Group has also included a large heatsink that avoids thermal throttling completely.

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Thank you for the review.
Unfortunatelly same thing. The device is just TOO OVERPRICED for its performance.
The performance/price chart says it all.
 
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more PCIe 4.0 tax
neat ... not

good drive, good technology that needs like a 33% price cut to be competitive/useful, unfortunately
 
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Interesting that we can reach 2.5 GB/sec TLC write speeds. I am curious if we can reach 3 GB/sec on 2 TB SSDs if we get rid of SLC shenanigans and focus on tweaking pure TLC writes.
 
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This doesnt look like 2,000MB/s (pure) TLC writes.
The way I see it, only the portion at the very end (at 1,000MB/s) represents TLC writes. What happens here is, it does pure SLC until 200GB have been written, then hybrid where parts get written to SLC while the other half are direct-to-TLC, until all of the remaining SLC's exhausted. Then it drops down to 1,000MB/s.
That would also explain why this drive's only got 200GB of pure SLC cache compared to the KC3000's 640.
 
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What happens here is, it does pure SLC until 200GB have been written, then hybrid where parts get written to SLC while the other half are direct-to-TLC, until all of the remaining SLC's exhausted. Then it drops down to 1,000MB/s.
The part when the SSD does 2000 MB/s means that the SLC cache is fill (so the controller is writing on TLC flash). Then the SSD does data folding, so reprogramming SLC blocks to TLC, more overhead as there’s more garbage collection in background, etc.
 
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Sheesh 455,00€ on amazon.de

The WD SN850 2TB is 296,71€ now on black friday deal...

What are they smoking?
 
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The part when the SSD does 2000 MB/s means that the SLC cache is fill (so the controller is writing on TLC flash). Then the SSD does data folding, so reprogramming SLC blocks to TLC, more overhead as there’s more garbage collection in background, etc.
That would work, too
 

W1zzard

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The way I see it, only the portion at the very end (at 1,000MB/s) represents TLC writes
Can't be because 1700 GB filled @ SLC mode = 5.1 GB TLC size, which is considerably bigger than the drive
 
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Yeah, I'm aware.
I am suggesting that it's only writing parts of the data as SLC (to speed things up vs pure TLC writes), but the alternate explanation of writing directly to empty TLC w/o having to flush the SLC cache to TLC would be just as well.
 
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