Still not clear on fastest T520 or 420, quad core available?

[jgollner]

I must be getting too old to keep track of Intel nomenclature, but just to clarify, is it possible to get a T series with four cores/8 threads? Also, does the WWAN expansion slot have SATA signaling like the W520 has?

TIA,

[Colonel O'Neill]

The T520 is configurable with a quad, but if you want a discrete graphics card, you might as well bump to the W520.

The T420 is only available from the factory with a dual, but you can apparently swap it out for a quad core Sandy Bridge and it would work (although run a bit toasty at times).

[kruxter]

I want a quad core and am debating whether to go T520 or W520. I want the best screen display available but also want to avoid excessive heat. Any opinions on which way to go?

[blackomegax]

They are essentially exactly the same, except the W520 is available with much better GPU options, cheaper (base)