Here are some comparative geekbench scores between a 2011 MacBook Pro, a thinkcentre desktop, and a 2018 Galago Pro from System76:
Single-Core scores
MacBook Pro desktop Galago Pro
2935 2186 4209
Multiple-Core scores
MacBook Pro desktop Galago Pro
6282 3493 11636
The MacBook Pro is a 13-inch Early 2011 model with 8 MB of memory and an Intel Core i7-2620M running at 2.7 GHz and an SSD replacing the original hard drive.
The desktop is a Lenovo 7373BC7 (aka a thinkcentre m58-7373) with 4 MB of memory and an Intel Core 2 Duo E8400 running at 3.0 GHz, a basic Nvidia graphics card, and an SSD for the boot drive.
The Galago Pro (previously reviewed here) has 8 MB of memory, an Intel Core i5-8250U running at 3.40 GHz, and a fast SSD for the boot drive.