I do not recommend that you buy it at all. The X3460 is a chip nine years ago that would be a bit worse than the G5400 (the most basic pentium of the last generation of intel) or the famous G4560.
It is not a bargain. In aliexpres X3460 costs $ 25. 4 GB DDR3 23 $. In Amazon to 1TB brand new hard disk costs 44 $. I would never buy a second-hand hard disk. It may fail the next day, especially if it is the same age as the processor.
In addition you need a first generation mobo.
Do not be fooled by its four cores and HT, nor its base speed of 2.8 GHz and turbo 3.46 GHz. It is a product of the first generation, has a much worse IPC than current products (with which its effective speed is much lower) and lacks the new AVX operations.
I3-2100 is worst than X3460. I5-2500 it's something better than X3460 but it's not enough and and also you would need a mobo of the second / third generation of Intel.
These three cpu are only suitable for basic tasks such as surfing the web, microsoft office, watching videos and playing light games (with a graphics card).