Zahirrudin :
Thanks Ryan...
https://valid.x86.fr/y41ejs >>> new validation base 100 ...4.7 ghz
what i can expect if i replace ram slot #4 to same as slot#2? or i need to replace all with higher memory clock ram?
Consider it an honor that darkbreeze is trying to help you as well!
I downloaded your motherboard manual, the recommended memory slots are A2 & B2 for a matched module set.
In your case the memory modules you have are all different product numbers so IMO they're garbage, No Offense Intended.
Since your 7700Ks memory design specifications are 2133/2400 then I suggest getting a matched set of memory at 2400mhz, which won't overclock your CPUs memory controller and allow lower temperatures to possibly reach higher multiplier overclock numbers.
https://www.newegg.com/Product/Product.aspx?Item=N82E16820232173
Reason for this suggestion: G-Skill is some of the best memory you can buy, period!
16g 2 x 8g is the perfect amount of memory for your setup, they won't overclock your memory controller, and they run at 1.20v, which is the M/B slot voltage recommendation.
The most important thing in overclocking is having the hardware to overclock, I don't care how much overclocking knowledge you have you're crippled with mismatched memory modules.