Join Date: Aug 2015
Location: Upplands-Väsby [Sweden]
What about going wider(i know GCN is limited to 4 frontend "groups")? I mean, i have a R9 Fury Nano with 4096 Shaders @1Ghz and a RX480 with 2304 Shaders @1.34Ghz, also 28nm vs 14nm. Both cards consume almost the same power: 110w(Bios TDP)+GDDR5 for the 480, 145w(Bios TDP)+HBM for the Nano.
It' clear to me that the GCN uArch really don't like high clocks, Polaris is "fine" around 1.3Ghz, Vega around 1.4-1.5Ghz, now Vega @1.8Ghz is running way past the efficent part of the Perf/W curve. I understand that AMD need to find 'easy' performance by spending the 7nm "extra TDP" increasing the clocks, but now we need something new as architecture. This VegaIV is performing great i must say, but it feels like a 5Ghz FX Bulldozer CPU...
Last edited by generaleramon; 05-19-2019 at 04:55 AM.