Radeon HD 5770 Has No Double Precision Floating Point Support
Not cool for OpenCL applications that require double precision in calculations. Radeon HD 5870 and HD 5850 have the double precision floating point processing support as it’s specified HERE and HERE in ATI Stream acceleration technology section. But Radeon HD 5770 and HD 5750 have not this support (see HERE: the double precision is missing).
Why Radeon HD 57xx have not the double precision support? Because it’s not implemented in the GPU. The funny thing is that the previous Radeon HD 4770 has the support of double precision…
Here is the list of devices supported by the very last version of the ATI Stream Computing SDK (v2 beta4):