T61: secondary GPU up and running (HD 7750), 3DMark06

[miro_gt]

lots of modifications took place as to manage the fitting of the PowerColor HD 7750 1GB GDDR5 into the advanced dock, and to deal with the overheating issues due to the small space, but I consider the project done since last night as temperatures topped out at ~87 deg C in a 22 deg C room at full continues load, i.e. me playing Blacklight Retribution at 1024x768 with all on high except textures that were on medium. The game (free on steam) is playable but still slows down here and there.

overall very happy with the result, considering the limitations of physical space, power consumption, BIOS issues, and the x1 PCIe link.

here's my first run, with temp monitoring software running on the laptop screen using its own nVidia GPU:
http://www.3dmark.com/3dm06/17106498

gpu-z screenshot:
http://oi50.tinypic.com/e6t9at.jpg

[mikemex]

Nice job! Though I must admit, I gave up with gaming on laptop some time ago... it's so much easier to just build a desktop and upgrade it when no longer happy.

[miro_gt]

well there's something seriously wrong with the setup. While benchmark scores are great, FPS is not - I've tried two games so far and both perform worse than my internal GPU which is over 5 times slower than this. Obviously the bus is to blame for this, as my internal is connected at x16, so the 7750 is severely bottlenecked.

oh well.. at least I tried.

EDIT: apparently I'm not the first person to figure that out:
http://forum.notebookreview.com/e-gpu-e ... ost6582485