Quick question. Need a laptop for someone joining my research group that will also be used in the WFH setup. Cuda is a must, so MBP won't work. OS will be Arch Linux. While I'm familiar with the X1 Extreme Gen 2, the Gen 3 models are coming out in the next few weeks according to our supplier.
Any reason to go for a Gen 3 instead of a heavily discounted but new Gen 2 when specs are similar (6c/12t, 32GB, 1TB SSD, GTX1650)?
I picked up a ThinkPad P1 Gen 2 recently for a really good price on eBay after going through the pain of buying a new XPS 9700 (lots of QC issues and returned). It's been really good. The P1 is basically the same laptop as the X1E but with a Quadro equivalent T2000 GPU. Gen 3 is just a spec bump and the only difference between gen 2 and gen 3 is 10th gen Intel H series which is effectively the same processor stuck on the 14++++++++++++nm architecture. Mine has the i9 9980h 8 core (same as the 16" MBP) which has been little more than re-branded as the 10th gen i7-10875 in the gen 3. The only other significant difference I can see is that gen 3 now have 500 and 600 nit displays where as gen 2 are listed as 400 and 500 nit (depending upon the resolution and OLED/IPS). Mine came with a 500nit 4K IPS matte panel which is really great to work on.
Your model will have the 9750h 6 core and there really isn't any performance difference with the gen 3 10th gen 10750h CPU. Gen 3 will have the 1650ti Max Q so about 10-15% quicker overall, it's not something that's really noticeable.
Personally I'd pick up a gen 2 if it's a good deal, both the X1E and P1 are pricey brand new. My P1 sits alongside my MBP 16" very nicely. I don't have to bother with bootcamp now as I have to work in Windows and Mac OS.
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