the first problem is with ur psu.
Originally Posted by Dee
deluxe 400w psu is not good for neither hd4850 xxx or 9800gt
So my suggestion is get a new gigabyte hd5670 which will have 2 years warranty
---------- Post added at 21:48 ---------- Previous post was at 21:42 ----------
Physx is not moving to AMD.
Originally Posted by Joker
nVidia will not be out of support of physx
his new roll in AMD won’t be connected to game physics related projects (instead, Manju is going to be involved in ISV recruitment).
Thats ur link says
However, according to our data, Manju departure won’t affect PhysX (he hasn’t been working on PhysX for over a year) or CUDA development process in NVIDIA,
Update: Pursuant to latest press-release, Manju Hedge will lead AMD Fusion Experience Program.
Update #2: from X-bit Labs article
In particular, [Manju Hedge] will manage the developer relations teams that help independent software developers (ISVs) to implement program code optimized for heterogeneous multi-core microprocessors.