GPU rework

[KC Micro Tronix]

I am planning on doing GPU rework. I have a customer that wants me to start this service and can supply me with about 5-10 machines / week that need this done.
What is a good source for GPU chips that are actually good! I have read some on the forums about intermittent supplies and counterfeit GPUs. I am new to this process and just got my rework machine.

I am also interested in changing the CPUs on some boards. Curious of anyone out there is doing this? I had a friend tell me that warping is a big issue.

 

[JohnB8812]

CPU pretty much not doable. GPU which model? If 2011, forget it not going to find good chips. If other models, I?m sure they exist as long as they aren?t old machines. Duke used to say best thing to do was practice on old Windows laptops to begin with

 

[KC Micro Tronix]

I was reading that they are hopeful that a new supply of chips would be around in a few weeks.