In architecture 500, load 502 is not divided as it is in architecture 400 but rather is left unified as in architectures 100 and 300, thus eliminating {HEAD ~ the complexity} and expense of {TAIL ~ dual power planes} 
In architecture 500 , load 502 is not divided as it is in architecture 400 but rather is left unified as in architectures 100 and 300 , thus eliminating { HEAD ~ the complexity } and expense of { TAIL ~ dual power planes }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL