Yes it is, which makes the M40 GPU a better option in some scenarios for better utilization (1 very powerful GPU vs. 2 kinda powerful GPUs).

Just look at the back of the card, you can see 2 sets of VRAM and heatsink mounting screws.

There are “cosmetically damaged” 32-48 port 1U switches with 4-8 10G SFP+ ports on them for under $100 on eBay. I don’t have the need for a 10G network right now but if I do, I will probably get one of these. Of course, they probably all draw around 300W and the fans are probably loud. Some of them even support “stacking” which is when you connect two separate switches together with a thick proprietary cable and they act as one. I can’t think of a specific model but I am sure you will be able to find one.

Old dented 40G QSFP+ NICs and switches surprisingly aren’t too much more expensive. I am finding HPE FlexFabric JG894A (48 port, 4x SFP+, 2x QSFP+) switches for under $70.