The important part though is the Sandy Bridge chipset. It was the first to support the 6Gbps bus speed, but was delayed by Intel and didn’t come out in time to make it into the T420 or T520, only the T420s
one thing to add p.s. – i just called lenovo, they basically said that the slower processor still has the same specs as the faster processor – 6gbps bus speed, same sandy bridge chipset… but again without testing this “lower” model with the intensity i’m taking a risk! 🙂
I only use my T420s for capturing and live streaming. All of my editing happens on an 8-core workstation (Sony Vegas). If the chipset is the same, a slightly slower processor won’t make a difference. The only time the processor gets high utilization is when I’m live streaming multiple streams (which means multiple h.264 encoding processes).