I'm thinking about buying a SSD and I don't know if I should buy a SATA or PCIe SSD. The PCIe SSDs are quite expensive, but if I choose to buy a SATA SSD I'd have to upgrade to SATA 3 and buy a new mainboard and CPU. My mainboard supports SATA 2 and PCIe 2.0. PCIE 2.0 has throughput of 500 MB/s per lane, so I don't think it would be a big difference to PCIe 3.0.
Please help me