Onlang werd bekend dat KX133 moederborden niet gebruikt kunnen worden om Slot-A Thunderbird proc's op te prikken, dit vanwege verschillen in timing toleranties. PC Rave meldt nu echter dat Abit bezig is met een BIOS update waarna de KA7 mogelijk wel in staat zal zijn om met Thunderbirds overweg te kunnen:
I just talked with Eric B. over at Abit. The issue of the Thunderbird and Spitfire not working on KX133 motherboards is definitely an issue, and Abit acknowledges that this is definitely a road block for the Abit KA7. However according to Eric, Abit is working on a BIOS upgrade for the Abit KA7 and quote, "a BIOS upgrade will solve this problem and [our] BIOS team is working on that right now." For Abit KA7 owners, this isn't a firm commitment from Abit, but rather a sign of hope for a potential upgrade path.
This is a definite departure from AMD's plan to leave the Slot A EV6 architecture and quickly transition to the Socket A architecture. There will undoubtably be more motherboard manufacturers coming out with BIOS upgrades to support the Slot A Thunderbird CPUs.