1)Resource usage: I did a benchmark during 1 overwatch game with RivaTuner-Afterburner and my gpu/cpu usage wasn't even close to 100%, also my ram usage was around 5GB's/8 https://drive.google.com/file/d/1g_fWCQXtvGN2uN4wWzi2uOtVjrbcm-SQ/view?usp=sharing
2)I tried to OC this RAM to 1600.It passed AIDA 30 min stress test only at 1.65V but later in some games I had game crashes because of RAM OC, this might be also because I have 3 PATRIOT sticks and 1 GoodRAM stick, they have simillar frequency, but different timings: 1x2GB GoodRAM GR1333D364L9/2G, Timings: 9-9-9-243x2GB Patriot Memory PSD36G1333K, Timings: 9-9-9-28