Ddr4 ram
Ddr4 ram
Your T3600 has an E5 2640 processor and 32 GB of RAM, but it uses DDR4. You could swap it out for a DDR4 module if you want better performance. Alternatively, consider upgrading the CPU if you need more power for your tasks. Your graphics card seems okay.
You won't be able to install DDR4 RAM if your motherboard and processor don't support it.
Installing DDR4 in a DDR3 slot isn't possible; you must upgrade to a newer generation that supports DDR4, which also requires replacing the motherboard.