4 ms·
MooresLawIsDead suggested this as well and I think it's a good idea especially in the current climate, though it's hard to react situationally when it takes >12
by mastax 5y ago
MooresLawIsDead suggested this as well and I think it's a good idea especially in the current climate, though it's hard to react situationally when it takes >12 months to launch a product even an iterative one. Take the 5600XT design and backport it to 12nm. You get something that performs pretty well at 1080p that you can sell for really cheap for a long time. Finally a replacement for the RX480/RX580.
One of the strange things with AMDs new GPU push is that their GPUs are less profitable in a supply constrained environment than their CPU/APUs. Ian Cutress recently talked about this (I think on YouTube @TechTechPotato). Even their highest end GPU dies selling to consumers at a price point higher then they planned for is much less profitable per wafer than a midrange APU. If there were no supply constraint they could just make as many of both as they can sell but right now they're just trading off profits against GPU market growth.
- mrweasel 5y agoCan you “just” take the 5600XT and switch it to 12nm? Won’t it require more power and cooling?
- profile53 5y agoSadly no, because everything is closely tied to the node. For example, it might take 0.3ns for a signal to physically travel from one edge of the chip to the other on a 7nm chip. On 12nm, it might take 0.5ns. The chip was designed to compensate for a 0.3ns delay, not 0.5, so now the cache is sending data to the core at the wrong time, leading to corruption and garbage data being processed. This, plus a million other things in both manufacturing and design have to change to build a chip on a different node (manufacturing tolerances, clock speed, metallurgy, patterning issues, etc.).
- mastax 5y agoYou can't "just" do it, but it is possible as shown by Intel Rocket Lake.
- fomine3 5y agoI read great writeup https://news.ycombinator.com/item?id=25926211 https://news.ycombinator.com/item?id=25926211