Hi Andrew,

Hope all is well at SARAO.

Just my 2c...

I don't particularly like the 4x2 for heavy work (it has undersized thermal
management and PSUs) but last I checked the board is pretty great value
even at non-academic prices.
For DSA (and other projects) I've had good luck with System-on-Modules
(I've used both Knowledge Resources and iWave and had good experiences).
The vendors all have COTS SoM + Carrier solutions you could use, though
pricing is substantially worse than the 4x2 (and particularly painful right
now because [supposedly] RAM).
In my various projects it looks like the 65/67DR chips are being sold
cheaper than the 47/48DR alternatives, so at first glance I'd look at what
options there are targeting those.
I know other CASPERites have been looking at boards from Interwiser, so
perhaps they will follow up with more info.

Good luck - interested to see what you come up with!

Cheers
Jack

On Tue, 20 Oct 2026 at 08:56, Andrew Martens <[email protected]> wrote:

> Hi everyone
>
> At SARAO, we are looking to develop FPGA platforms for current and future
> projects (platform = toolflow + enclosure + FPGA based processing board +
> companion peripherals).
>
> Our basic requirements are,
> 1 - a number of decent ADCs (4 is a nice number)
> 2 - an interface with a bandwidth that can move the data off at full rate
> (100GbE or 200GbE).
> 3 - At a reasonable cost.
> Zynq UltraScale+ RFSoC based boards seem to be a good choice. The RFSoC4x2
> being a very nice configuration.
>
> Our projects are a mix of educational and research. But we also have a
> mandate to create commercial products where possible. Some projects may
> also require many boards (e.g 8 or 20).
>
> The RFSoC4x2 is great. But it may not be the best option for projects
> where we cannot access the academic pricing offered by Real Digital.
>
> No doubt we are not unique. Does anyone have a good option for a well
> priced COTS board that has simllar specs.
>
> Regards
> Andrew
>
>
>
>
>
>
>
>
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