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Silicon Power A55 2TB TLC SATA SSD with SLC Cache $134.49 Delivered @ SiliconPower via Amazon AU

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Normally $158.90 - One of the cheapest SATA SSDs with SLC Cache.

  • 3D NAND flash are used to deliver high transfer speeds.
  • Advanced SLC cache technology allows performance increase and longer life.
  • 7mm slim design, suitable for ultrabooks and ultra-thin notebooks.
  • Supports TRIM command, garbage collection technology, RAID and ECC (Error Checking & Correction) to provide the optimized performance and improved reliability.
  • 3 year limited warranty.
Price History at C CamelCamelCamel.

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closed Comments

  • +1

    Thank you.

    Ordered 3 for a RaidZ1 backup location for my portables (thanks syncthing).

  • +12

    Just be aware that Silicon Power are not known for their reliability, and as this only has SLC Cache and not DRAM its also not ideal for consoles like the PS4.

    • +3

      Had one Nvme 2 silicon power lasted 4 weeks then died. Lucky i didnt put anything on it because i was suspicious to why it was way way way too hot

    • Does anyone have experience with Fanxiang brand? I'm using the 1TB SP A55 since last Christmas without any issues. Still, might be time to take a backup.

      • +2

        The brand mixes and matches whatever is available.

        You judge Fanxiang by lookong up the controller and flash brands on your specific ssd. More good than bad luckily.

        Most important thing with cheap ssd's is to overprovision. Usually just rounding down the last GB to a round number is enough spare cells (as drives already have some anyway)

    • +2

      Yep, and incase anyone is wondering what that means in real use terms; say you are copying a large file to this drive, the speed may start off high (4-500mb/s) but once that SLC cache is full, it will drop to the write speed of the NAND (2-300mb/s or less) and not recover until the write is complete and the SLC cache is cleared. DRAM on the other hand, is dynamic. So you will sustain those high write speeds, or close to, for the duration of the write. This drive would be more than fine for PC gaming and general storage though, but if you're planning on doing tasks that involve heavy write and rewrite tasks like 4k video editing or 3D modelling, I'd look elsewhere. Something with dedicated DRAM is a must for those use cases, like a Crucial MX500 if looking at the budget end of TLC, DRAM drives.

      • +1

        [DRAM SSDs] will sustain those high write speeds, or close to, for the duration of the write.

        DRAM in a consumer-grade SSD is not used to cache write data. DRAM is used to cache the map between logical data blocks and their physical location on the NAND flash memory chips. For wear-levelling purposes, where the data is physically stored on the NAND chips is managed by the SSD controller. A DRAM SSD performs data mapping lookup & change operation faster than a DRAM-less SSD. Since this lookup is done on every block-level read & write operation, a DRAM SSD will perform faster than an equivalent DRAM-less SSD.

        A DRAM SSD that has exhausted its SLC cache during sustained write will drop its write speed down to the native NAND chip speed just like a DRAM-less SSD.

        • Cheers, yeah I was trying to not get into FTL maps to keep it simple, but you're right. A DRAM SSD will slow down IF the SLC cache is exhausted AND the DRAM is no longer able to keep up with the workload. The recovery is still faster than a DRAM-less SSD though and is noticeable.

    • +1

      DRAMless SATA SSDs are great for storage servers where it can act as a mid-tier cache in a three-tier setup (RAM, then SSD, then HDD), as well as for use as an external USB drive.

      • +1

        Exactly what I'm using a 1TB Patriot P210 for in my NAS. They definitely have their use cases, I've just seen people choose a cheap drive for their primary and wonder why everything is so slow when they do any write intensive usage.

  • I was happy with my a55 for a few years but recently it runs like dog shit if it's more than 1/2 full
    As in it can't even keep up with downloading torrents to it at 100 kb/s and windows performance monitor says it's maxed out at 100%

    When copying files it pauses for such a long time that the transfer errors out

    I have trimmed it and done a full (not quick format) format on it a few times to try and fix it but it still runs like crap past 1/2 full
    No point buying a 2tb drive if it has a heart attack past 1tb imo

    • What reason do your logs give for that? Is it IOWait?

      SSD's shouldnt get painfully slow until 75%+, not 50%; so somethinf is up.

      • How would one see those logs?

    • +1

      I've had the exact same behaviour with a couple of 1TB A55s in two different systems. They are now both completely unusable, and much slower than even a hard drive. Getting anything on or off them is near impossible.

  • +4

    Anyone have a by good suggestions for a decent 2tb ssd that'll last

    • +1

      i am also after one

    • +1

      My crucial mx500's have been the most reliable (or pro Samsung's)

  • +1

    hmmm, the Verbatim Vi3000 2tb NVME was $129 last week.

    • I didnt know Verbatim also do NVME drives. Good to know!

    • +1

      where?

      • +1

        was at centrecom but seems to be gone now, cheapest now seems to be patriot 2tb at msy and umart for 144

  • Have a variety of WD, Samsung , Intel and SPCC M.2/SSD The SiliconPowers are terrible. I've had 3 quit in under 2 years.. The "saving" is a trick.
    Even cruical BX would be better IMHO

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