‘Successor AMD Kaveri gets ddr4 support and integrated fch’

Rumors have surfaced online about AMD’s Carrizo apus, which should succeed the current Kaveri generation in 2015. The chips will not only receive support for ddr3 but also for ddr4. APUs for the laptop get integrated I/O connectivity.

The claims come from Bright Side of News, which is said to have seen an early version of the BIOS & Kernel Developer’s Guide. At Carrizo, AMD will move from the Steamroller to the Excavator cores, which will include support for instruction sets that Intel’s Haswell also includes, such as avx2, bmi2, movbe, and rdrand. Carrizo is still produced in 28nm and shocking changes in the GPU field should not be expected: just like Kaveri, the chips will have Volcanic Island GPUs.

However, there are changes to the memory controller: it would support both ddr3 and ddr4. In the soldered versions for laptops, the APUs would have an integrated fch, where the i/o provides, among other things, two SATA 6Gbit/s, four USB 3.0 and eight USB 2.0 ports. With desktops, Carrizo chips could handle FM2+ sockets and the internal FCH would then be disabled. It is unclear what the situation is with support for existing motherboards in combination with DDR4 support. Remarkably, the number of PCI-e lanes would also be reduced from 24 to 16.