No, each cyberlimbs (with partial limbs counting half) gives +1 regular Physical box. That's non-overflow. So someone with Body 5, Will to Live 3 and 2 cyberlimbs will have 8+(5/2, round up = 3) + 2 = 13 Physical Condition Monitor Boxes, and another 5+3 = 8 Physical Condition Overflow Boxes, meaning they'd need to take a total of 13 Physical Damage (or whatever fills the Stun track) to lose consciousness, and 13+8+1 = 22 Physical Damage to die.