Re: Gaming Computers.
The CPU is exactly the same, they don't produce different variants of the same chip.
The FX 4100 IS the FX 4100, there is no version 2 or whatever.
On that note, go for the one with the bigger HDD.
EDIT: That chip has got a 4MB Lvl 2 Cache AND an 8MB Lvl 3 cache
Athlon II x4 645 || 1TB 7200rpm HDD || EVGA GTX 650Ti OC || 8GB DDR3 RAM || Windows 7 Home x64
i5 4210M || 500GB Samsung EVO 850 SSD || GeForce 825M || 16GB DDR3 RAM || Windows 10 x64