Indeed - I forgot to mention that, an important reason for high power figures. Higher core clock was the low hanging fruit and yes, it's quite high still, remember nv GTX 470 having 608MHz 3D clock and effectively 704 shaders (at that clock), well the intel card idles at that clock.
By the way - does aynone know if the Arc has memory compression going/turned on, or just Z-compression?
Would be interesting to measure. From all the test results quite a lot of times, despite having all those shaders and TMUs and ROPs, it just can't compete on par with the others, kinda like
Radeon HD 7970 never really could match (unless it was a shader-heavy load) the nimble GeForce GTX 680 until HD 7970 had bandwith (not Z, Z was turned on already) compression (in later Windows 7 and above drivers, finewine it was called or something), like the GTX 680 (from the start).