DDR4 Single Channel vs Dual channel

[crash bash]

I am buying each parts for my new build for few days..CPU and Motherboard ordered from near city so it will reach soon but other things i already bought.. And My RAM is Corsair Vengeance LED DDR4-3200mhz 16GB / CL16 Memory. I really dunno abt. single channel vs dual channel until now. Is it bad to have single 16gb than 2x8gb ? Please tell what diff. it give to gaming and other things ?

Full Config :

CPU : Intel Core i7 7700K
Motherboard : Asus ROG STRIX Z270E
CPU Cooler : Arctic freezer 360
RAM : Corsair Vengearce LED DDR4-3200mhz 16GB / CL16
SSD : samsung 850 evo 500gb
PSU : CORSAIR RMx Series RM650X
Case : phanteks ethroo luxe

 

[atljsf]

cl16 is slow ram, the idea is to get a lower number on the cl but if you already have it, well, it is what it is

the dual versus single, the dual memory offers a ram access speed boost

it represents for gaming and some tasks a 5 to 10% increase in performance, think of it as a extra 5 - 8 frames per second on some cases, sometimes a bit more, sometimes just represents more stability and higher low fps limit

it is worth to have that speed increase, just for getting two ram modules

 

[raisonjohn]

IMO, the only possible advantage of the single channel is related to budget/cost IF such RAM stick of a certain capacity is way cheaper than buying a pair of the same total capacity. Other than that, all advantages point towards using dual channel.

The usual scenario in getting a single stick is "to add one later on". However, know that adding another stick, even of the same brand, model, capacity, speed, and latency is not a guarantee that both will work together. Buying a pair or sticks is less risky in terms of compatibility as both sticks were tested/sold as a pair to work together.

In terms of performance, here are some examples of the advantage of using dual channel memory in gaming:
[video="https://www.youtube.com/watch?v=PsgQ9g8kuQk"][/video]
[video="https://www.youtube.com/watch?v=0XmCE7Qfbt4"][/video]

For other than gaming, here is a RAM performance test between dual and single channel: http://www.gamersnexus.net/guides/1349-ram-how-dual-channel-works-vs-single-channel/Page-3

 

[crash bash]

f**k !!!
anyway thanks for the helping
i will get another ram in the future

 

[glanbalfdu88]

Hi,
It's a late contribution, but this page shows up as the first one in google for the "dual vs single channel" question, so I felt it was worth adding this here.

cl16 is slow ram, the idea is to get a lower number on the cl but if you already have it, well, it is what it is

I just wanted to nuance your point: "High CL is slow and bad".

Although this is true in an absolute manner, the reality is that there is a balance to find between getting a lower CAS RAM (or CL), and getting a higher frequency.

3000MHz CAS16 = 3200MHz CAS17

Try looking for a RAM performance index table, there you can see what you really need in order to get a performance boost.

However (again), a performance index boost of 55%, from 178 to 275, does not translate in a measured improvement of 55%: benchmarks show that from 2133MHz to 3600MHz you gain something between 10% to 30% depending on the use case (file reading, compressing, gaming etc.).

And finally and ironically, you can go to DDR3 with very low CAS and average frequency performing as well as very high frequency DDR4.

RAM is so easy to choose