Currently using a Ramaxel Technology DDR3 2x 4GB ram sticks, looking to upgrade my Ram to 16 or even 32 GB. Motherboard is LENOVO Version 9HKT47AUS Date 1/10/2012. Using a I5 2500 CPU. Wondering if I could do DDR 4 or stay with a DDR3 and then just bump it up to a Corsair or other brand ram with 2 or 4 sticks. I am not sure my current RAM will work with another manufacturer.