AnandTech has written a an article about the launch of AMD’s Dual Core Athlon64 X2, which will be taken place this coming May 31.

There will a total of 4 models of this dual core desktop processors, the details are as follows:-

AMD Athlon 64 X2 4800+
(2.4GHz w/ 1MB L2 cache-per-core) = $1,001 each
AMD Athlon 64 X2 4600+
(2.4GHz w/ 512KB L2 cache-per-core) = $803 each
AMD Athlon 64 X2 4400+
(2.2GHz w/ 1MB L2 cache-per-core) = $581 each
AMD Athlon 64 X2 4200+
(2.2GHz w/ 512KB L2 cache-per-core) = $537 each

[Source]