You're looking at the wrong graph. The t5 EVO is the top one in the pair by that comment and sustains the 440MBps speed for ~13000 seconds (3.6 hours). The bottom graph is for the comparison SSD, which sustains ~1700MBps for 3 minutes before falling down to ~900MBps.
Hello my name is Gabriel Ferraz i'm the computer engineer responsible for the Techpowerup SSD Database, first of all, great job on the review, just as an insight, i'm not sure which decoder you used on that NAND Flash, but i think it's the newer 176-Layer QLC Die, i didn't see any QLC 128-Layer NAND Flash from Samsung so far. only the 512Gb / 256Gb TLV V6 and the TLC V6P (Prime) 133-Layer 512Gb
Gabriel, Thanks for taking the time to make this observation.
I've since confirmed that this flash package is indeed 176L 7th Gen. V-NAND QLC, I have updated the article with necessary strike-throughs to reflect this fact.
By the way, if you could do me a favor, since i'm from Brazil Samsung don't ship drives here so i can't contact them directly, do you think you could ask them more about their "V6P 133-Layer" line-up? I've recently heard about it a few days ago, but i can't find anything about it.
"However, Samsung is currently selling the PSSD for $650... This is absurd pricing for a QLC PSSD"
It's only absurd pricing if there is competition. There ISN'T. If I want an external 8G SSD drive, what are my options?
- I can buy a QVO and an enclosure -- but most enclosures don't work with an 8TB drive. (More precisely there seems to be some confusion in the spec around 8TB, so for any random combination of 8TB drive, enclosure, PC, and OS, it's random whether it works or not)
- I can buy a VectoTech drive which is, admittedly, cheaper, but probably of weaker performance, especially for large writes. - Or I can buy an Oyen drive of even more unknown characteristics.
That's it.
The Samsung price will come down when brands that people have actually heard of enter the market. So far, for whatever reason, that simply hasn't happened. No Crucial, no Kingston, no PNY, no Sandisk.
Yes, once there is more competition from known brands in the 8TB space, the pricing will come down. But, that doesn't explain why the T9 4TB SKU is currently at $250 in both Best Buy and Amazon, while Samsung wants to charge $350 for the 4TB T5 EVO (on Amazon again).
Pricing a QLC PSSD more at the same capacity as a TLC PSSD (with a faster host interface) is absurd. Samsung needs to go back to the drawing board as far as pricing is concerned.
The Sabrent enclosure has no issues with 8TB drives and allows 10Gbps speeds, double what this drive offers. And you can give it TLC instead of trash QLC.
$650 for QLC is just insane. These quad NAND chips just royally suck compared to TLC, in quality, lifespan, performance, you name it. I dont care if it's 8TB, it shouldn't cost anywhere near this much.
I'm currently using a Mac with Ventura OS and have formatted the Samsung T5 EVO 8TB SSD to the APFS file system. After receiving the T5, I started transferring data from an 870 QVO 8TB SSD. However, I've encountered significant performance issues. Once the storage on the T5 EVO exceeds approximately 6TB, the responsiveness of my Mac decreases dramatically, almost to the point of freezing, and the write speed falls to around 2MB/s. Such a significant reduction in performance renders the device nearly unusable, leading me to question if Samsung thoroughly tested the 8TB capacity before releasing it to the market.
Unlike the 870 QVO, which returns to full speed after a period of inactivity, the T5 EVO does not show the same recovery. I've experienced this issue on different Macs with identical results. Additionally, a friend who also purchased the same T5 8TB model is facing same problems. This consistency in performance issues leads me to suspect that there might be a design flaw in this specific model.
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James5mith - Tuesday, November 14, 2023 - link
"The T5 EVO is able to sustain maximum write speeds (around 440 MBps) for more than three hours"By your own graph, 180 seconds does not equate to 3 hours.
DanNeely - Saturday, November 18, 2023 - link
You're looking at the wrong graph. The t5 EVO is the top one in the pair by that comment and sustains the 440MBps speed for ~13000 seconds (3.6 hours). The bottom graph is for the comparison SSD, which sustains ~1700MBps for 3 minutes before falling down to ~900MBps.James5mith - Tuesday, November 14, 2023 - link
Sorry, I guess I was looking at the T9 graph while reading the paragraph. My mistake.GabrielFerrazTPU - Tuesday, November 14, 2023 - link
Hello my name is Gabriel Ferraz i'm the computer engineer responsible for the Techpowerup SSD Database, first of all, great job on the review, just as an insight, i'm not sure which decoder you used on that NAND Flash, but i think it's the newer 176-Layer QLC Die, i didn't see any QLC 128-Layer NAND Flash from Samsung so far. only the 512Gb / 256Gb TLV V6 and the TLC V6P (Prime) 133-Layer 512GbSlash3 - Tuesday, November 14, 2023 - link
The TPU database is a great resource; we appreciate the work that goes into it!GabrielFerrazTPU - Thursday, November 16, 2023 - link
Thank you :)I'm glad you guys liked it
ganeshts - Tuesday, November 14, 2023 - link
Gabriel, Thanks for taking the time to make this observation.I've since confirmed that this flash package is indeed 176L 7th Gen. V-NAND QLC, I have updated the article with necessary strike-throughs to reflect this fact.
GabrielFerrazTPU - Thursday, November 16, 2023 - link
You're Welcome :DBy the way, if you could do me a favor, since i'm from Brazil Samsung don't ship drives here so i can't contact them directly, do you think you could ask them more about their "V6P 133-Layer" line-up? I've recently heard about it a few days ago, but i can't find anything about it.
name99 - Tuesday, November 14, 2023 - link
"However, Samsung is currently selling the PSSD for $650... This is absurd pricing for a QLC PSSD"It's only absurd pricing if there is competition. There ISN'T.
If I want an external 8G SSD drive, what are my options?
- I can buy a QVO and an enclosure -- but most enclosures don't work with an 8TB drive. (More precisely there seems to be some confusion in the spec around 8TB, so for any random combination of 8TB drive, enclosure, PC, and OS, it's random whether it works or not)
- I can buy a VectoTech drive which is, admittedly, cheaper, but probably of weaker performance, especially for large writes.
- Or I can buy an Oyen drive of even more unknown characteristics.
That's it.
The Samsung price will come down when brands that people have actually heard of enter the market. So far, for whatever reason, that simply hasn't happened. No Crucial, no Kingston, no PNY, no Sandisk.
ganeshts - Tuesday, November 14, 2023 - link
Yes, once there is more competition from known brands in the 8TB space, the pricing will come down. But, that doesn't explain why the T9 4TB SKU is currently at $250 in both Best Buy and Amazon, while Samsung wants to charge $350 for the 4TB T5 EVO (on Amazon again).Pricing a QLC PSSD more at the same capacity as a TLC PSSD (with a faster host interface) is absurd. Samsung needs to go back to the drawing board as far as pricing is concerned.
TheinsanegamerN - Wednesday, November 15, 2023 - link
The Sabrent enclosure has no issues with 8TB drives and allows 10Gbps speeds, double what this drive offers. And you can give it TLC instead of trash QLC.TheinsanegamerN - Wednesday, November 15, 2023 - link
$650 for QLC is just insane. These quad NAND chips just royally suck compared to TLC, in quality, lifespan, performance, you name it. I dont care if it's 8TB, it shouldn't cost anywhere near this much.zhpenn - Tuesday, December 26, 2023 - link
I'm currently using a Mac with Ventura OS and have formatted the Samsung T5 EVO 8TB SSD to the APFS file system. After receiving the T5, I started transferring data from an 870 QVO 8TB SSD. However, I've encountered significant performance issues. Once the storage on the T5 EVO exceeds approximately 6TB, the responsiveness of my Mac decreases dramatically, almost to the point of freezing, and the write speed falls to around 2MB/s. Such a significant reduction in performance renders the device nearly unusable, leading me to question if Samsung thoroughly tested the 8TB capacity before releasing it to the market.Unlike the 870 QVO, which returns to full speed after a period of inactivity, the T5 EVO does not show the same recovery. I've experienced this issue on different Macs with identical results. Additionally, a friend who also purchased the same T5 8TB model is facing same problems. This consistency in performance issues leads me to suspect that there might be a design flaw in this specific model.