Here you can see two PCBs one below the other. OCZ has packed an insane number of MLC NAND chips on the Z-Drive R4 and the drive has a total of 128 Intel 25nm MLC NAND chips i.e., 64 chips on both the PCBs. This can be easily understandable considering the drive can be bought for approximately a whopping Rs.1000000 (Yes, you read that right! TEN lakh rupees). So be ready to sell your car or house for it.