Want to replace RAM modules

Consider how much memory you need. If all you do is browse the internet or use office then you likely don't need any more ram than 2 gb. If that is the case then 8 gb is a lot of wasted ram when 4 gb would suite you just fine. If you are a heavy gamer, run virtual machines, or run memory intensive applications then you might need 8 gb. You can always check current consumption in task manager under the performance section. I bring this up because I don't like seeing people waste money on ram they don't need after all 8 gb or higher is no faster than 4 gb for those that only need 2. Now the point about dual channel is valid. 2x4 would give you better performance on a dual channel computer than an 8 gb stick.

Also I see that you are using slots 1 & 2. Usually dual channel requires slots 1 & 3 or 2 & 4. Check you motherboard's documentation.

I game quite a lot, and do some video editing also. My motherboard has two black and two gray slots: 1 black then,1 grey- and then 1 black, 1 grey. I installed it in no.1 (black) then no.3 (next black) slot. Cpuz shows dual. But I'm no expert, you guys can check log and screens to tell me if I did it as it should be for Dual channel..

I just checked the manual and that is the correct configuration. That is probably why they colored the slots that way. It either needs to be 1 & 3 or 2 & 4.

Ok, thank you for the confirmation. My only question now is if my present config with my mobo is (default, I did no overclocking) stable enough theoretically at least. The PC booted up/posted OK from the first boot after installation.

It's a surprise for me too! When the vendor told me if the ram didnt run Ok he'll take it back and replace it with some other RAM within two days The Pc seems ok so far...the DRAM voltage is 1.488 according to hwmonitor.

I found this on the spec sheet of my version 5.0 (does it explain this? I mean the list is not complete by any means. But it does show RAM running downgrade to 1600...The technical side of RAM compatibility I don't fully comprehend yet):-

Yes. I want a stable system. Just that. Hope to buy a better motherboard sometime in the future that'd let me utilize the RAM fully, keeping the other components. Let's see.

I thought it was down-clocked automatically to match the motherboard's default (advertised) speed.