I have a couple of these in some servers at work, and they work just fine. https://www.amazon.com/Lemspum-Network-Ethernet-X520-DA1-82599EN/dp/B0B2183C32
Amazon - Generic Intel X520-DA1 $15
- Thread starter MountainBofh
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I would call that not a deal when you can get used branded dual x520 sfp cards for $1 more:
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For my work, I'm not allowed to buy from Ebay, so the generic card is a nice option. Plus the generic doesn't vendor lock on the transceiver ( I know thats easy to get around, but still annoying).I would call that not a deal when you can get used branded dual x520 sfp cards for $1 more:
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ah i guess I didn't know these cards had gotten that cheap!I would call that not a deal when you can get used branded dual x520 sfp cards for $1 more:
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I don't think it's even that big of a power savings 
wattage-wise, but %-wise iirc it was a great savings.
The real sweet spot is those 25Gig ConnectX4 LX cards that use the same power as the Intel 10Gigs!!! Too bad there's not more switcehs or affordable switches at that capacity.... jump right to 56Gig is what I did, then realized the power of THOSE switches is a bit much LOL!!
wattage-wise, but %-wise iirc it was a great savings.The real sweet spot is those 25Gig ConnectX4 LX cards that use the same power as the Intel 10Gigs!!! Too bad there's not more switcehs or affordable switches at that capacity.... jump right to 56Gig
is what I did, then realized the power of THOSE switches is a bit much LOL!!
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I love the Connectx4 cards. Get them for $30 on ebay all day. In my quick and dirty testing, they do draw a bit more juice vs the X520's though. About 4-5 watts more at idle vs the X520.
keep in mind based by the picture its a counterfeit x520 (its an older chip flashed and sold as x520) while they may work - its likely to produce some issues.
I was thinking this could be the case, but didn't post it since I only had a hunch. Makes the branded cards with dual ports an even better deal.
also using a Mellanox CX3 (single 10G SFP variant) in my consumer desktop because it only has a x4 pcie slot. (it's actually only x1 electrically, so max bandwidth is around 6 or 8gbps)
In my home server, it runs esxi, and i'm using an ancient emulex card that I got for dirt cheap years ago. And even though it's been deprecated by broadcome/vmware for several releases, it still works great (once I forced the connection speed in esxi so the link would come up)
(2) Beware - Emulex 10GbE Virtual Fabric Adapter II x8 PCI-E slot | ServeTheHome Forums
In my home server, it runs esxi, and i'm using an ancient emulex card that I got for dirt cheap years ago. And even though it's been deprecated by broadcome/vmware for several releases, it still works great (once I forced the connection speed in esxi so the link would come up)
(2) Beware - Emulex 10GbE Virtual Fabric Adapter II x8 PCI-E slot | ServeTheHome Forums