Tiresias (the GPUkiller)
The Tiresias is a small board that can be soldered onto the motherboard of the MacBook Pro 15-inch or 17-inch 2011 (Early or Late) models.
These are all the models that have the 820-2914-A, 820-2914-B, 820-2915-A or 820-2915-B motherboard.
See our main page or page with Technical Details. Mounting instructions 820-2914. Mounting instructions 820-2915.
Youtube movies about the Tiresias made by others: