What is the difference? There's quite a noticeable price difference.
Take2:
AMD Athlon64 x2 3800+ Dual Core CPU - Socket 939 - Price: R 1,452
AMD Athlon64 3700+ CPU (Venice Core) - Socket 939 - Price: R 2,037

Take2:
AMD Athlon64 x2 3800+ Dual Core CPU - Socket 939 - Price: R 1,452
AMD Athlon64 3700+ CPU (Venice Core) - Socket 939 - Price: R 2,037