Re:TSMC officially begins 5 nm production
by frogblast on Monday June 22, 2020 @06:34PM
(#23607728)
The 1080 and the rumored 3080 are not the same architecture: they didn't just get die shrunk.
For the same number of SMs, you're also paying substantial area for the tensor cores, ray tracing acceleration, independent thread scheduling, different I/O to support memory technologies, more NV link, larger caches, etc. That stuff didn't happen for free.
A simply die shrunk 1080 would have had more TFlops than what we have, but it wouldn't be as interesting of a product.
Re:TSMC officially begins 5 nm production
by Simon321 on Tuesday June 23, 2020 @06:25AM
(#23612041)
Exactly, the reason for this is that it is an RTX and it has a lot of tensor cores and ray tracing cores which you won't measure by looking at the amount of FLOPS.
For the same number of SMs, you're also paying substantial area for the tensor cores, ray tracing acceleration, independent thread scheduling, different I/O to support memory technologies, more NV link, larger caches, etc. That stuff didn't happen for free.
A simply die shrunk 1080 would have had more TFlops than what we have, but it wouldn't be as interesting of a product.