G unit,.sorry to heat you had an issue with your tomahawk. They have good reviews, and I have had good personal luck with an MSI board.
As far as the memory I chose. That is 4X4 with two sets of the same 2x4. Not really mix and match there. As long as the part numbers the same, he will be fine.
Its not 2X4 and 2x8...
Anort, I know he's in au, I just used that source as a reference for the op. But now he and I know they have an au site.
I don't really want to discuss single rank vs double rank that in depth. But as far as AM4 compatibity, I am fully aware of the issues the platform had with earlier Agesa coding.
That said, I have done ALOT of research about memory in general. AMD probably did their early coding for the platform with memory that uses 2 sticks of 8gb memory as that is the most common setup people buy with 16gig cap, and it was probably Samsung B die. Which is why they probably had the least compatibity issues with that specific ic.
Among the ton of research I have done about memory, I also followed very closely the launch of ryzen and Am4. If you are willing to spend the time looking at several QVL lists, you will see that other than Samsung B die, the single rank kits also had the least incompatibility issues.
As mentioned, I have done a lot of research about memory, speed, latency, single rank vs duel rank.
If you have a system with a single stick of 8gb, or a system with 2 sticks of four, the 8gb is duel rank, and the other is single rank.
Say you have a render image that uses 6gb total. Both systems use 3000Mhz speed, how do you think the single stick is faster at the same speed?
Both systems need to access multiple memory addresses for the full 6gb render. The 8gb stick has 4gb per side.
So now you have a single channel getting flooded,
Where the two sticks have double the bandwidth.
That is where my logic comes from. Latency is also directly related to heat. So in instances like that, multiple sticks are better.
Why do miners like AMD cards compared to Nvidia? Because of bandwidth. I am not however advocating data mining, I am firmly against it, and that's another subject.
We all have our opinions about what we like.
In a build where I had a board with only two slots, and I wanted as much capacity as possible, that is the scenario where I would go with two eights of duel rank.
The corsairs mentioned are proven good sticks. They also use proven on AMD Samsung bdie.
So do Gskill Flare X, Triton Z. Among others.
Just so there is an understanding that I am not a complete newb when it comes to memory, take a look at my HWBot wall. Check out my PiFast scores. I am Rob173n, watch my score climb with each entry. But my CPU core clock only increases only every few entries. The difference in score comes from manually altering memory timings.
My AMD 750k is the fastest 750k on air.