I basically had to do this: 1. Install Dell 6970M driver 2. Mod a 8900M driver, then install over 6970M As I understand things: All of the info processed by GPU on r3 is sent to the screen via your i7's integrated graphics core. Because of this, hybrid drivers need to be installed for the process to work properly - That's what Dell's drivers are; intel drivers modified with some AMD info, and AMD drivers modded with some intel info. Without a hybrid driver, intel won't recognize your dGPU. When we install the only hybrid driver that we have, it tells iGPU that our model number is that of a 6970M. That's why must mod the drivers before installing over the old. It'd be nice if someone were to make an actual modified driver. I used to do it myself for Optimus, but am way too lazy / un-knowledgeable to do it for this! PS: 10-bit color doesn't work for me. Here's DriverVer=02/01/2011, 8.800.7.2000 by Dell (certified drivers for AutoCAD 2011 and 2012) and here's 8.851 sorry, fell asleep!