Sophgo SG2380 2.5 GHz 16-core SiFive P670 RISC-V processor (opens in new tab)

(cnx-software.com)

9 pointsKlasiaster2y ago5 comments

5 comments

For anybody wondering the P670s are advertised to be around Cortex-A78 performance, their slides 5% slower on SpecINT2k6, but 50% less area) [0] and have 128 bit vector registers.

The X280s are more of an external accelerator with 512 bit wide vector registers and an integrated TPU using Sifives VCIX interface [1]. It enables custom vector coprocessors, in this case a TPU, to interface directly with the vector register file.

The X280s will very likely not run the same OS as the main P670s because of their different VLEN, which would't allow for moving processes between them.

[0] https://www.youtube.com/watch?v=C4DcZyB6i1E [1] https://www.youtube.com/watch?v=si5w7JQtSDk

snvzz2y ago

>5% slower on SpecINT2k6, but 50% less area

That's a huge difference in area.

In line with SiFive tradition, always huge area advantage against any given performance point's ARM design counterpart.

I am amazed they manage to still keep this sort of advantage up, while tackling higher and higher performance points.

KlasiasterOP2y ago

Maybe it's like with software, once you add bloat/baggage over the course of the years it's hard to get rid off when trying to optimize again.

1 more reply

RetroTechie2y ago

These specs, at 5..30W thermal envelope, should provide excellent performance for miniPCs / laptops or whatever this SoC finds its way into.

Looking forward to benchmarks of actual systems!

And (considering Milk-V's anouncement) at $100..120 price point? Just... wow.

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