I actually am wondering about the S5 wifi mimo technology. I know it's in the new Broadcom radios. So is this only in the exynos version? Cause Qualcomm Snapdragon 800 SoC already has a radio and does not support it.
Qualcomm gained WIFI expertise through its Atheros acquisition. 802.11ac is built into the Snapdragon SoC and the 802.11ac standard allows for optional 2 MIMO spatial streams and up to 8 so my guess is the Snapdragon 800 variant used in the S5 is a new spin.