I'm expecting over 1k core, hopefully I'll be able to get more like 1050.
I managed to create a working pencil mod for the 5750. I am also working on a hard vmod so I can just dial in the voltage for testing.
Hard vcore mod is a go. I also have added a molex connector for easy reading of vcore, and the fan is now soldered onto the board's voltage input, so it will no be limited by what the built-in controller can supply.
Here are pictures.
I just need to work on something for vmem and possibly a better cooler mod and this thing will be epic.