Which cpu is the best
Which cpu is the best
You've got several old CPUs to compare—what makes you think one stands out?
For more details about the i7 920, you can visit the official specs page here: https://ark.intel.com/content/www/us/en/...l-qpi.html
Top to bottom: i7, i5, i3, various i3 models, Pentium G6950 (good), the rest seem outdated for building a system now.