mellanox mcx311a's <$35

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gzorn

Member
Jan 10, 2017
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8
Yeah, that's why i bought 2. My actual shipping somehow ended up less - $10. But yeah, it's only a real deal if you want several.
 

I_D

Member
Aug 3, 2017
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Out of interest, a few questions:
Besides the power consumption being lower (can anyone confirm that), what is the benefit over Connect-X2?

Longer driver support maybe near the future yeah, but what about right now?
What would justify the extra cost?

BackupProphet: RDMA as in multichannel smb?
 

i386

Well-Known Member
Mar 18, 2016
4,221
1,540
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Germany
The connect-x3 are supported products, they could get feature updates in newer firmware, the connect-x2 are end-of-life*.

All connect-x devices use the same driver, no matter if connect-x2 or connect-x4.

Cx-2 support rdma, but I can't say if I enabled it with the v2.10.720 firmware or by playing with the driver settings in windows.


* HP offers support for the cx2 till 2020, and has even a newer "custom" firmware from mellanox: hp firmware is at v2.10.720 while mellanox offers v2.9.1200 on their website.
 

Cybertron

Active Member
Oct 4, 2016
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Atlanta, GA
Seller is accepting lower offers... and upon request, has combined shipping. I got 4 for $120 shipped. Seems reasonable.
 

Craash

Active Member
Apr 7, 2017
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If anyone is on the fence about this, do it. I got mine today, swapped the bracket, upgraded the firmware and tested.

This is a real file transfer, from a windows 10 Pro 1709 to a FreeNAS v11.x. 40GB file size.

 

cactus

Moderator
Jan 25, 2011
830
75
28
CA
Out of interest, a few questions:
Besides the power consumption being lower (can anyone confirm that), what is the benefit over Connect-X2?

Longer driver support maybe near the future yeah, but what about right now?
What would justify the extra cost?

BackupProphet: RDMA as in multichannel smb?
SMB mulichannel is something else. SMB direct is the RDMA acceleration.
 

techtoys

Active Member
Feb 25, 2016
189
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since this is an old thread … these cards are now running $15 shipped.
I bought a few last week to replace some $12 x2 cards.
 

abq

Active Member
May 23, 2015
675
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Wow, do you have link to $15 shipped? I had no luck in my ebay search. Thx :)
since this is an old thread … these cards are now running $15 shipped.
I bought a few last week to replace some $12 x2 cards.
 

RobstarUSA

Active Member
Sep 15, 2016
233
101
43
I'd also like a link to $15 shipped. I thought my $20 shipped was pretty good, but $15 is much much better. If that is the case I may replace all my connectx-2 cards.
 

techtoys

Active Member
Feb 25, 2016
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Link with bad news below
Seller alicetechno has been selling these for over a year and just ran out.
I bought 3 for $45 total shipped on July 29th not much lower than asking of $17/each

page says 142 were sold.
I suspect we will see more. These are getting old.