Why on HD4870 with 512 MB onboard RAM only 128 available to OpenCL ???

Discussion created by Raistmer on Mar 5, 2010
Latest reply on May 13, 2010 by Raistmer
Global memory size: 134217728
Constant buffer size: 65536
Max number of constant args: 8

Only 1/4 of total RAM can be used in OpenCL buffers, why?!