Using an "old" MSI Gaming X RX480 8GB card and with AMD VCE, 100% of the card is getting used. Love it.
Former user
wrote on 11/27/2018, 6:42 PM
The speed & quality of VCE encoding with RX480/580 cards is low for h.264, Nvenc is superior on Nvidia gtx1060/1070 etc. H.265 encoding speed & quality on these cards are similar. You would not buy an AMD Polaris Radeon GPU for hardware (vce) h.264 encoding. AMD Vega cards use VCE4.0 (as opposed to 3.4) so maybe give better results. Not sure.
Three years ago, I compared my (then) new AMD W7100 video card (VCE 3.0) against a very old Firepro card, and got an 80% improvement, search the forum for "Benchmark tests for new video card".
Former user
wrote on 11/28/2018, 3:15 PM
VCE3.0 is twice as fast as VCE3.4 for h.264 encoding at the same quality. AMD went backwards with hardware encoding video encoding with Polaris. I recall on the release of rx480 people guessed due to the introduction of VCE h.265 encoding the silicon area for h.264 encoding was reduced.