@Dragan, you sound like TK and returning to China is BS
If you had an electrical engineering degree you would know that to get or adjust a power supply to 5,2Volt is not as easy as solder two cables.
Beside you do not skip the crappy MicroUSB in opposite you lousy engineer would simply overload it.
P = U x I (5,2V x 2A = 10,4W) the little contacts can get warm /hot.
Bullshit par excellence
WTF single threaded performance, why would you buy 8 cores if you do not intend to use it.
So, 1GHz is stil better than have nothing, but to think into other people is not your strenght.
1GHz and running stable is still better - with heat sink you can try to go higher.