MXMs I've had running in my M17x

Not sure which rev I have. The tag under the battery says P01E. How do I tell which rev this particular M17x is?

Here's the list:
4870 (RV770)
5870 (Juniper)
5870 (Cypress)
6970 (Barts)
a smattering of NVIDIA parts, and for the last month
7970 (Pitcairn)

Juniper, Cypress and Barts all behaved oddly. Switching to or from the battery by plugging or unplugging the wall wart would hard hang the machine. 7970 works flawlessly though. I haven't been successful getting 2 MXMs working in this thing for a long time but I haven't tried with the 7970s yet. I'll toss in a second one today and see if I can get it to work. Not interested in CF/SLI though, but dual independent MXMs for GPGPU applications.

Dual 7970 MXMs will make for a 4.2 TFLOPS laptop with 306 GBytes/sec of DRAM bandwidth. BooYah! Completely I/O bound though. That's why I'm looking to upgrade to Ivy Bridge + dual x16 Gen3 PCIE slots, now that I have Gen3 MXMs. If anyone has a suggestion, please post to this thread.

 

If it has 2x MXM slots, it has to be a r1 or r2- the r3 and r4 are single MXM only. And I think the CPU socket changed between the revisions, so an i7 processor would mean that it's a r2. I think your problem with getting xFire is that the r1 and r2 were designed for 70W TDP graphics cards, and can't power 2x 100W cards (such as the 6970m and 7970m). Good luck getting it running, though! (and the mere fact that you got a 7970m running in an r2 might be of interest in http://forum.notebookreview.com/ali...-mobility-7970-m17x-r3-illustrated-guide.html)

 

Confirmed Rev2