The fastest processor from Intel(modifies Itanium),
Itanium has a multi-core architecture
that (refers to Itanium) handles data compression on a PC
as efficiently as the perfectly balanced engine of the Porsche handles curves on the road.
Proper comparison is made between "Itanium handles data compression on a PC" and "the perfectly balanced engine of the Porsche handles curves on the road"
Option B is correct.
(A) The fastest processor from Intel, Itanium's multi-core architecture handles data compression on a PC as efficiently as the Porsche's perfectly balanced engine handles curves on the road.
The fastest processor from Intel modifies - multi-core architecture - incorrect
further, multi-core architecture... is compared to Porsche's perfectly balanced engine - which is not the intended comparison. Incorrect
(C) Itanium's multi-core architecture, the fastest processor from Intel, handles data compression on a PC as efficiently as the Porsche's perfectly balanced engine handles curves on the road.
Same issues as in option A - incorrect
(D) The multicore architecture of Itanium, the fastest processor from Intel, handles data compression on a PC as efficiently as the Porsche, the perfectly balanced engine, handles curves on the road.
Same issues as in A/C
(E) The fastest processor from Intel, Itanium has a multi-core architecture that handles data compression on a PC as efficiently as the handling of curves on the road by the perfectly balanced engine of the Porsche.
The first part - opening modifier is fine in this case. However, in the later part the intended comparison is incorrect.
"Itanium handles data compression on a PC" whereas "the handling of curves on the road by the perfectly balanced engine of the Porsche - is inverted"
Answer B