(Update 04-25) DFI DT122 (AMD RX-427BB) Industrial ITX T730-a-like; $99 shipped w/ 8GB

Discussion in 'Great Deals' started by arglebargle, Sep 28, 2018.

  1. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    On mine that's configured as an exhaust fan, so is the PSU. They pull airflow from the vented panel on the right side of your image across the CPU heatsink area and vent out the left side of the case.

    Edit: I have a pile of quiet Sunon maglev fans in the mail, I'll be modding mine next week or so when they arrive and I'll post with part numbers and temp/noise comparisons.
     
    #61
    Last edited: Mar 30, 2019
  2. Ozymand

    Ozymand New Member

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    Thank you for sharing this, arglebargle! As soon as I sort out a chassis issue (the chassis appears to be out-of-square and thus the displayport and usb ports are not aligning with the case and thus making the ports unusable) I'll see how it'll sort out. Thank you, once again!
     
    #62
  3. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    Someone wants these gone, (2) units at $85/shipped this morning:
    DFI DT122-BE 2nd Gen AMD Embedded R-Series Industrial Desktop PC 2.7GHz | eBay

    Update: RIP deal pricing, price is back up to around $110.

    This was a good deal at $110, at $85 they're a steal. If I didn't already have 4 RX-427 machines I'd take these in a heartbeat.

    Some notes on quieting these bad-boys down:

    The stock fan is an Everflow R124020BM:
    • Rated Current: 0.16 Amp
    • Rated Input Power: 1.92 Watt
    • Rated Speed: 8000 rpm
    • Maximum Air Flow: 10.19 CFM or 0.29 CMM
    • Sound Level: 34.8 db(A)
    I've swapped the fans in mine for the Sunon MB40201VX-000U-G99 and it's a perfect drop in replacement. Audibly it's around 1/3 quieter.
    • Current Rating 115 mA
    • Power Rating 1.38 W
    • RPM 8200 RPM
    • Airflow 10.8 CFM
    • Noise 27.5 dBA
    VX's here, seller combines shipping on multiple items:
    Sunon 40mm x 20mm High Airflow MagLev Fan 3 Pin Vapo 40x20mm MB40201VX-0000-G99 695978162029 | eBay

    I've got some Sunon MB40201V1's in the mail now, I'm about 99.9997% confident that ~9CMF is enough cooling for my purposes:
    • Current Rating 70 mA
    • Power Rating 0.84 W
    • RPM 7200 RPM
    • Airflow 8.9 CFM
    • Noise 25.5 dBA

    $5/shipped V1's here:
    Sunon MagLev 40mmx40mmx20mm 3 Wire Axial Fan 795508179692 | eBay

    Seller is advertising ready to use fans but shipping bare wire fans with no connector, yay! eBay! /s Easy enough to fix but annoying.

    V1's should be approximately half the loudness of the stock fan, at this point quieting the machine further is going to require replacing the CPU fan as well. V2's and V3's exist, but I'm not sure I want to go that low speed with a Connect-X3 in the case.

    Sunon specs are here: https://datasheet.octopart.com/MB40201VX-000U-G99-Sunon-Fans-datasheet-8818073.pdf
    Everflow specs here: R124020BM 40X40X20mm 3 pin Dual Ball Bearing Fan

    I'm looking into quieter CPU fans as well, unfortunately there's no real data on the stock fan so I'm just winging it with 50x15mm Sunons.
     
    #63
    Last edited: Mar 30, 2019
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  4. BoredSysadmin

    BoredSysadmin Active Member

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    I am curious if anyone has tested pfSense OpenVPN and/or IPSec performance on RX-427bb boxes? AES enabled is assumed.
     
    #64
  5. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    I'm working my way through the performance costs of various Linux virtual networking stacks this week, when I've got more of a handle on this I'll spin up pfSense and run some tests for you.
     
    #65
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  6. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    #66
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  7. Marsh

    Marsh Moderator

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    Thanks
    Pickup 2 at $75 each
     
    #67
    Last edited: Mar 30, 2019
  8. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    It depends. If you're running pfSense bare metal and not cranking 500Mbps through openvpn or running snort you can get away with a ridiculously quiet/low CFM replacement fan. If you're going to be loading the machine you can get it down to ~25dBA, aka audible but not terrible. The stock fan is around 35dBA, or roughly twice that loud.
     
    #68
    Last edited: Mar 30, 2019
  9. fohdeesha

    fohdeesha Kaini Industries

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    god this site is horrible for my wallet
     
    #69
    hakabe, snoturtle, SwanRonson and 8 others like this.
  10. Marsh

    Marsh Moderator

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    Me too.
    I already own 2 x HP t620 plus as pfsense hosts.
    Now , 2 more DT122 .
    I have to decide which machine is better for Kodi.
    I could transplant the DT122 mb to a quiet itx case.
     
    #70
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  11. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    Just replace the exhaust fan in the DT 122 and you're set.

    The Sunon fans I linked specs for are great, the V2 model should be more than enough cooling if you're not running the machine at full load. The CPU fan is actually louder than a V2, I need to find a good replacement for that now.

    We killed the deal, the seller has raised his price back to ~$100. I hope everyone who wanted one got one (or two!)
     
    #71
    Last edited: Mar 31, 2019
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  12. nthu9280

    nthu9280 Well-Known Member

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    I didn't need one just wanted to use my upcoming eBay bucks if the $75 deal was still on till tomorrow.
     
    #72
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  13. e97

    e97 Active Member

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    Whats the power usage after replacing the PSU with a picoPSU?

    and do people still use pfsense? It seems a linux router with kernels post 3.14 are faster
     
    #73
  14. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    I don't have a picoPSU handy to check. That'd be nice in these cases though, you could stack a bunch of SSDs in the space where the PSU normally lives.
     
    #74
  15. e97

    e97 Active Member

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    Yea, they win in space, noise and efficiency.

    Cant beat 94% platinum 1200W for $40 + $20 for the picoPSU. I've begun switching all my computers to 94% server PSUs with larger fans + picoPSU. My storage, gateway/router, and compute server are all powered by a single PSU.

    I'm also curious about powering directly from DC via solar - seems cutting edge DCs are pushing 48V DC straight to the rack.

    If the price drops again, I'll pick one up and report back!

    edit: updated search query

    AMD (dt122, RX-427, quad core 2.7Ghz) (motherboard, desktop)
    under $110
     
    #75
    Last edited: Apr 3, 2019
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  16. SwanRonson

    SwanRonson Member

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    I've read about this before but I didn't really understand it. Can you explain a little more
     
    #76
  17. e97

    e97 Active Member

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    DISCLAIMER: If you are not comfortable working with electricity, consult an expert. Messing something up here will likely seriously damage your equipment and injure yourself. I'm not responsible for anything you do.

    If a picture if worth a thousand words..

    [​IMG]
    a video must be a few million ;)

    Take a look to get an idea about picoPSUs:




    Then instead of using a power brick, use the 12V rail from a PSU, the more efficient the better.

    [​IMG]

    This is what blade servers and HPCs already do, discussed here:
    https://forums.servethehome.com/index.php?threads/server-psu-breakout-board-picopsu.22034/
     
    #77
  18. canta

    canta Well-Known Member

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    #78
  19. canta

    canta Well-Known Member

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    would anyone not mind to look "front-header/panel" connector pin diagram for leds, power on/off, and reset?
    at least minimally power on/off
     
    #79
  20. arglebargle

    arglebargle H̸̖̅ȩ̸̐l̷̦͋l̴̰̈ỏ̶̱ ̸̢͋W̵͖̌ò̴͚r̴͇̀l̵̼͗d̷͕̈

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    #80
    canta likes this.
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