Nvidia Quadro M2000M or M1000M into Elitebook 8570W?

[HooPee]

I recently acquired a couple years old Elitebook 8570W, running Intel i5, 16GB DDR3 RAM and Nvidia Quadro K1000M 2Gb.

While the thing is quite a beast as-is, I find the old DDR3 utilizing GPU to bottleneck my daily tasks quite a bit nowadays.

I learned that these Elitebooks use MXM-A 3.0 video cards, thus allowing us users to replace and even upgrade the GPU.

The only ca.~2013 official information I've located so far whitelist only Quadro K2000M and AMD Firepro 4000M as possible upgrade candidates for my laptop, both which while still upgrades, would be relatively underwhelming ones.

However, I've seen some claims and even videos of people replacing their stock GPU with some impressive high-end cards, such as the GTX 965M 4gb, but such projects clearly require tad more work than I'd be willing to attempt for now.

But what about the other Quadro cards found in other HP products, like the M2000M, or its cheaper cousin, M1000M ?

Both of these are MXM-A 3, and would be singificant performance boost from my K1000M, and I have found some hints of people upping their systems with said GPUs. However, no source indicates how "plug & play" these upgrades are, and I'm not too familiar or comfortable trying out things like VBIOS flashing, etc., unless really necessary.

While at it, are there any available, more recent whitelists for compatible GPUs, or detailed guides for more extreme upgrades? My Elitebook's warranty obviously has ended long ago by now, and I'm not too dependent on this device alone, so I might just as well use it as a learning project.