Mars Perseverance rover uses 'same processor' as original iMac Results 1 to 15 of 15 Mars Perseverance rover uses 'same processor' as original iMac The RAD750 SBC is a radiation / temperature hardened device using a PowerPC 750 CPU. Read more. Re: Mars Perseverance rover uses 'same processor' as original iMac Whilst I get that performance isn't the key metric here, I would have thought efficiency would still matter, especially within limited power budgets on a rover. 5w for that level of performance is pretty dire, although granted I have no idea on the overheads introduced by the hardening - it'd be facinating to learn more about how that is achieved.