Sorry for the misleading, I was sure
it was mentioned a RX 460
M, instead is a RX 460, so for desktop option.
But
seems like it is really weak, and
"the smallest member of the Polaris family that we’ve seen yet, [...] geared towards MOBAs such as League of Legends."
Ugh!
Anyway it doesn't fit for laptops, so hopes still remain with the RX 480M, that early benchmarks define as
"slightly faster than a Nvidia GeForce GTX 960M. "
Bring it on, Apple!
There are 2 Polaris chips. 10 and 11. 10 > 11 tho.
RX 480 (desktop) is full Polaris 10 chip. RX 470 (desktop) is cut-down Polaris 10 chip. RX 460 (desktop) is full Polaris 11 chip.
The RX 480M suposedly is 'full' Polaris 11 chip, therefore the performance should be on par with a desktop RX 460.
The RX 490M suposedly should be based, if not full chip, on Polaris 10, being performance wise close to a desktop RX 480.
These are just speculations tho, we are still to see any confirmation from AMD on this. Specially in regards to the RX 490M.
About the RX 480M being better than the 960M: It's good, but a bit disapointing. The RX 480 beats the 970, so a lot of good people were expecting the RX 480M would beat the 970M. Being only better than the 960M is 'meh'.
Although it uses a lot less TDP, which can result on it coming to 14 and maybe even 13'' laptops. (Although Apple wouldn't use it on the 13'' probably, anyways).
If there's one thing I can count on Apple doing, it's them releasing machines with disappointing graphics cards. One of the reasons I've gone 13" MBP + hackintosh and haven't looked back.
Suposedly this delay is because of the GPU, since AMD doesn't have the RX 480M announced. Intel alreaddy had the Skylake chips avaiable, so we can hope that apple will at least deliver a RX 480M, which should be a big jump from the tiers of the R9 M370X and GTX 750M/650M.