I already have 8gb ddr3 ram installed in my zoostorm tempest pc. Is it ok for me to add another 4gb ddr3 ram? Its the same speed and model ram just a different brand. I have a spare ram slot not used. One ram slot is being used with the 8gb, theres two slots for ram total.
Is this the motherboard in your PC? "A68HM-E33 V2 Motherboard" https://www.cdw.com/shop/products/M...s_kwcid=AL!4223!10!12485742762!74079667735113
Then it's a Micro ATX board with only two memory slots. That would mean if you have 8Gb in one slot then you're going to add 4Gb to another. While it will work if the CAS latency is the same it's usually not a good idea to mismatch different sized sticks of RAM because it could make them perform asymmetrically and cause a bottle neck. The idea situation would be if both modules were of the same size and speed.