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Thread: SSD Write Endurance 25nm Vs 34nm

  1. #5326
    SSDabuser Christopher's Avatar
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    Samsung 830 256GB Day 237

    (GiB) 5,887,996
    (TiB) 5,749
    (PiB) 5.65


    (Avg) 298.72 MB/s over the past 2000+ hours

    (B1) Wear Leveling Count: 25,454

    (B5) Program Fail Count: 0
    (B6) Erase Fail Count: 17
    (B7) Runtime Bad Block Count: 134
    (05) Reallocated Sectors: 548864

    Read Failures: 117

    (POH) 5752

    -------------------

    It's chugging along still.

  2. #5327
    Moderator Anvil's Avatar
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    Shipment confirmed on a few 840 Pro's. (not meant for endurance testing though)

    I'll be ordering a few non Pro's for testing, that is, if no one else had planned on testing the TLC's?
    (anyways, testing more than one of these drives wouldn't hurt)

    So, they are rapidly getting available in these parts of the world.
    -
    Hardware:

  3. #5328
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    @Anvil
    The TLC 840 sounds exciting There'll be no more drives for me before I get enough sparetime to fix the two that's been waiting the last couple of months. Looks like that won't happen before december.

    Here are todays update:

    m4
    1945.4780 TiB
    7983 hours
    Avg speed 73.28 MiB/s.
    AD 18 to 8.
    P/E 33500
    C3 247252828 to 337721144
    01 82343 to 118725 (1)
    CE 90
    MD5 OK.
    Reallocated sectors : 00


    Intel X25-E 64GB
    1.31 PiB
    4447-30=4417 hours
    Reallocated sectors : 205 to 255 to 5
    Available Reserved space: 62 to 61
    MWI= 91
    MD5 =OK
    78.41 MiB/s on avg


    Mtron Pro 7025 32GB
    Paused until new firmware is updated.

    OCZ Vertex 1 120GB
    Will start after an update to the latest firmware.
    1: AMD FX-8150-Sabertooth 990FX-8GB Corsair XMS3-C300 256GB-Gainward GTX 570-HX-750
    2: Phenom II X6 1100T-Asus M4A89TD Pro/usb3-8GB Corsair Dominator-Gainward GTX 460SE/-X25-V 40GB-(Crucial m4 64GB /Intel X25-M G1 80GB/X25-E 64GB/Mtron 7025/Vertex 1 donated to endurance testing)
    3: Asus U31JG - X25-M G2 160GB

  4. #5329
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    Anvil, waiting for the 120gig 840's to become avaliable. Other options include the intel 335, corsair neutron and plextor m5 pro.

  5. #5330
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    I've ordered a samsung 840 TLC 120gig and a Plextor M5 pro 120gig

    Will decide on the Plextor's fate after I play with it a bit .... but the 840 will burn

  6. #5331
    Moderator Anvil's Avatar
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    OK

    I might join in on testing the 840 at some later point, depending on your results.

    The Pro's should be here by tomorrow, I'll play some on a PCIE 3.0 controller (9207) thats been sitting in it's box for a few months.
    (A real shame that there has been no time to play)
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  7. #5332
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    Quote Originally Posted by Christopher View Post
    My 830's CRC Error count is actually 2. It's actually a SATA error count. Mine increased when another drive I was testing died.
    that softens it up a bit, as mine is now on 130 now. Although I got no idea why its going up. 641 gig written to drive. 15 /p/e cycles done.

  8. #5333
    SSDabuser Christopher's Avatar
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    I've got a few of the new Sammies in 120s, but not sure what I'm going to do with them yet.

  9. #5334
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    Christopher: Someone has to help me work out if these samsung 840's are any good!

  10. #5335
    SSDabuser Christopher's Avatar
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    Quote Originally Posted by canthearu View Post
    Christopher: Someone has to help me work out if these samsung 840's are any good!
    I'm impressed with the read speed. To be certain, the write speed is not in the 830 's class, but considering TLC has seven guard bands and 8 voltage levels, I think it's a miracle it works at all! It's still supposed to be 3K PE cycles (I think) but the MWI is based on 1K PEs.

    Sequential and random reads are significanty better than the 256GB 830, while write speed is worse than the 64GB 830. All writes are limited to about 130MB/s. All in all, I'm incredibly impressed -- it's faster than many of the SLC drives I have, and I don't just mean the MTRONS.


    ------

    THe 830 is up to 12.5 trillion LBAs written. It's not significant in any way, except it sounds like a whole lot.
    Last edited by Christopher; 11-14-2012 at 10:21 PM.

  11. #5336
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    I've just received my samsung 840 120gig .... Will have a play with it later.

    I don't think i'll be able to part with the M5 Pro yet ....

  12. #5337
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    Samsung 840

    Christopher ... I'm impressed with the read performance of the samsung 840 as well. It is certainly the match of any normal MLC drive.

    Anyway, time to get down to business ... to start off with, some benchmarks for the samsung 840:




    Read performance is fantastic .... easily as good as any SATA 6 drive I've seen.
    Write performance, while not as good, is still as good as your average 120gig sandforce drive .... which really is plenty for the tasks it needs to do.
    Last edited by canthearu; 11-16-2012 at 01:43 AM.

  13. #5338
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    Initial smart values



    Still plenty of juicy data there!

  14. #5339
    Moderator Anvil's Avatar
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    I benched the Pro's last night (128GB and 256GB), will be posting tonight in the Storage forum.

    The Pro's are rather nice
    -
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  15. #5340
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    Drive Details:

    Make: Samsung
    Model: 840
    Capacity GB: 128 GB
    Interface: SATA 6Gb/s
    Controller: Samsung MDX
    NAND maker: Samsung
    NAND process: 21nm TLC
    NAND part#: unknown
    NAND P/E spec: 1000 cycles
    NAND type: Toggle Mode

    Testing Environment:

    OS: Windows 7 x64
    Hardware Platform: Intel 1155 Z77

    Test Details:
    Static Data: 39.2 GB
    Over-Provisioning: 0 GB
    % Compression: 46%

    ASU Endurance test Started:

    Last edited by canthearu; 11-16-2012 at 05:56 AM.

  16. #5341
    SSDabuser Christopher's Avatar
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    There is a problem with some 840s and LBA writes ; right now, F1 won't increment past 2.04TB and may reset with power cycles. It's hardly a big deal, so if you see it, don't think you're going crazy.

  17. #5342
    Xtreme Member Zaxx's Avatar
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    Anand just did a write up re: 840 endurance and noticed this too...decent little read. This thread is linked as well.

    http://www.anandtech.com/show/6459/s...ce-of-tlc-nand
    Last edited by Zaxx; 11-16-2012 at 10:05 AM.
    'Best Bang For The Buck' Build - CM Storm Sniper - CM V8 GTS HSF
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  18. #5343
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    Quote Originally Posted by Christopher View Post
    There is a problem with some 840s and LBA writes ; right now, F1 won't increment past 2.04TB and may reset with power cycles. It's hardly a big deal, so if you see it, don't think you're going crazy.
    Yeah, I'm seeing this bug.

    The Anandtech Samsung 840 TLC died as well, right after the article was written. Not something I really expected from samsung. I'll probably retention test my 840 every couple of weeks.

    The 840 pro seems to be seeing a number of failures under high load as well.

  19. #5344
    Xtreme Member Zaxx's Avatar
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    Time to start hammering out fw updates...I'm sure they've already begun.
    'Best Bang For The Buck' Build - CM Storm Sniper - CM V8 GTS HSF
    2500K @ 4.5GHz 24/7 - Asus P8Z68-V Pro Gen3 - GSkill 2x4GB DDR3-2400 C10
    Sapphire Vapor-X 7770 OC Edition - PC Power & Cooling Silencer MkIII 600W
    Boot: 2x 64GB SuperSSpeed S301 SLC Raid 0 Work: Intel 520 120GB
    Storage: Crucial M500 1TB - Ocz Vertex 4 128GB - 4x 50GB Ocz Vertex 2
    HDDs: 2 x 1TB WD RE4 Raid0 - Ext.Backup: 2 x 1.5TB WD Blacks Raid 1

  20. #5345
    SSDabuser Christopher's Avatar
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    It's cool that Mr. Vatto gave the 830 a shout out, but it actually has 5,850TiB on it at the moment, not the almost 5,000TiB he mentions.

    Based on my calculations, a 120GB 840 should hit MWI 1 around 126TiB (under the endurance test). It's definitely spec'd for 1K PE cycles.

  21. #5346
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    Here are todays update:

    m4
    1965.0628 TiB
    8062 hours
    Avg speed 73.19 MiB/s.
    AD 8 to 1 to 255 to 253.
    P/E 33836
    C3 337721144 to 456606202
    01 118725 to 167920 (1)
    CE 90
    MD5 OK.
    Reallocated sectors : 00


    Intel X25-E 64GB
    1.33 PiB
    4526-30=4496 hours
    Reallocated sectors : 5 to 79
    Available Reserved space: 61 to 59
    MWI= 91
    MD5 =OK
    78.04 MiB/s on avg


    Mtron Pro 7025 32GB
    Paused until new firmware is updated.

    OCZ Vertex 1 120GB
    Will start after an update to the latest firmware.
    1: AMD FX-8150-Sabertooth 990FX-8GB Corsair XMS3-C300 256GB-Gainward GTX 570-HX-750
    2: Phenom II X6 1100T-Asus M4A89TD Pro/usb3-8GB Corsair Dominator-Gainward GTX 460SE/-X25-V 40GB-(Crucial m4 64GB /Intel X25-M G1 80GB/X25-E 64GB/Mtron 7025/Vertex 1 donated to endurance testing)
    3: Asus U31JG - X25-M G2 160GB

  22. #5347
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    Samsung 840 Day 1

    Drive Hours: 26
    ASU GiB Written: 7,458.54
    Avg MB/s: 111.06 (15.52 hours)
    MD5: OK

    Wear Leveling Count (B1): 59 raw (94 normalized)

    Reallocated blocks (B3,05): 0 (0 sectors)
    Failure count (B5, B6): 0 program, 0 erase
    Uncorrectable Error Count: 0
    ECC Error Rate (C3): 0

    Drive is chugging along fine .... One thing I've noticed is that TRIM occurs quite quickly and it always gets in it's 100meg of writes after each cycle (other drives often stalled right after all that TRIM and didn't recover quick enough to handle all 100meg of random writes before it timed out)

  23. #5348
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    Samsung Magician Lifetime Indicator:


  24. #5349
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    Samsung 840 Day 3

    Drive Hours: 75
    ASU GiB Written: 23,882.93
    Avg MB/s: 108.04 (11.4 hours)
    MD5: OK

    Wear Leveling Count (B1): 191 raw (81 normalized)

    Reallocated blocks (B3,05): 0 (0 sectors)
    Failure count (B5, B6): 0 program, 0 erase
    Uncorrectable Error Count: 0
    ECC Error Rate (C3): 0

  25. #5350
    SSDabuser Christopher's Avatar
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    I've been waiting for the 830 to hit 6PIB before posting another update. Shouldn't take too much longer.

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