Adobe Cools Down Enthusiasm about GPGPU

An executive from Adobe, Russell Williams, indicated in an interview that the GPGPU will not dramatically boost performance of the CS4, yet.
If he confirmed that the future revision of Adobe Creative Suite will take advantage of the GPGPU, this solution will not be the revolution expected yet, so one should not dream of a miracle or of a huge performance gain. The reason is not linked to the GPU but rather the speed of the bandwidth of the interconnection wit the GPU. It is currently evaluated to be around 600 MB/s while one would need to get around 3 GB/s in order to fully benefit from GPGPU potential. So if one tries to overload the GPU by assigning too many tasks to it, one could then end up with a fennel phenomenon and a potential lost in performance.
So, Adobe is currently only working on speeding up display by the GPU, as the required bandwidth is then much lower than heavy raw computing tasks, as the GPU can directly deal with it, without having to send them back to the CPU. He then discussed about 2 important technologies to come in a near future: Larrabee from Intel and Snow Leopard from Apple. SO, one should not expect for experience huge performance gain in term of computing, but rather impressive and/or improved 2D/3D rendering by the use of GPGPU. To fully benefit from the GPGPU at the raw computing level, one will need to get the GPU and the CPU together and fully interconnected via high-speed technologies, a bit the solution chosen by Intel with the future Nehalem...