AMD originally planned to launch the upcomming Athlon II three-core and four-core CPU's later this month. Now it appears that AMD is changing plans a bit.

The Propus and Rana 45nm processors are being pushed back to sometime around August or September. This puts the launch right in line with the entry level Pisces chip as well.

However, the dual-core Athlon II Regor CPU still retains the same scheduled launch time of June, right along side the the dual-core Phenom II X2.

AMD Athlon II X4 600-series (Propus) is a quad-core processor with dual-channel DDR2/DDR3 memory controller (depending on platform) and 2MB L2 cache (512KB per core), Athlon II X3 400-series (Rana) is a triple-core central processing unit with DDR2/DDR3 memory controller (depending on platform) and with 1.5MB L2 cache, whereas AMD Athlon II X2 200-series (Regor) is a dual-core processor with 1MB L2 cache per core and DDR2/DDR3 support, depending on the platform.