On average, the old Core i7-2620M is about 3% (in the Lenovo X220T), 7% (Fujitsu S751), respectively 8% (Vostro 3350) slower than the Core i7-2640M (see for specs and details). As price and features are similar, the new i7 CPUs are a clear recommendation. We also plan to benchmark the new quad core i7 CPUs. Till then, take a look at our processor benchmark list.
Super Pi mod 1.5 XS 1M - 1M (sort by value) | |
Sandy Bridge Core i7 Refresh | |
Dell Vostro 3350 (Vostro0131) | |
Lenovo ThinkPad X220T 4298-2YG |
Super Pi mod 1.5 XS 2M - 2M (sort by value) | |
Sandy Bridge Core i7 Refresh | |
Dell Vostro 3350 (Vostro0131) | |
Lenovo ThinkPad X220T 4298-2YG |
Super Pi Mod 1.5 XS 32M - 32M (sort by value) | |
Sandy Bridge Core i7 Refresh | |
Dell Vostro 3350 (Vostro0131) | |
Lenovo ThinkPad X220T 4298-2YG |
* ... smaller is better
I am one of the founders of Notebookcheck. My primary focus is on articles about new CPU and GPU technology. With my scientific background (Ph.D. in computer science) I try to put facts before feelings in my work. I have been writing and working for Notebookcheck since 2005.