ryzen 7 ram question

[Cl1362]

ryzen 7 1700 cpu

crosshair hero vi

dominator platinum

i want to have 4 sticks of ram 4 x 8. 32gb

 

what does quad channel mean?

 

will there be any benefit to having 4 sticks of ram compare to 2

 

thanks!

[Damascus]

Actually having more than 2 RAM sticks on ryzen is kind of awful, usually can't go over 2133mhz.

 

[Cl1362]

16 minutes ago, Damascus said:

Actually having more than 2 RAM sticks on ryzen is kind of awful, usually can't go over 2133mhz.

 

whys that?

[DrMikeNZ]

21 minutes ago, Cl1362 said:

whys that?

The Ryzen memory controlled is dual channel, if 4 dimms are installed the controller has to switch back and forth between the dimms on each channel increasing latency. Because the memory controller on the CPU is rather weak, and adding more RAM sticks puts a too much strain on it significantly reducing achievable clock speeds. Officially, 4 dimms of dual rank memory are only supported at 1866MHz, or 4 dimms of single rank at 2133MHz. Anything above that is an overclock and not guaranteed.

 

Quad channel memory is not supported by Ryzen (using a 4x8GB kit will run in dual channel), it is used on enthusiast and server platforms such as X299 or X399 motherboards. This allows 4 RAM sticks to run simultaneously quadrupling the bandwidth over single channel. Most applications do not saturate dual channel memory bandwidth, and it is more than enough for the average user.

[Cl1362]

1 hour ago, DrMikeNZ said:

The Ryzen memory controlled is dual channel, if 4 dimms are installed the controller has to switch back and forth between the dimms on each channel increasing latency. Because the memory controller on the CPU is rather weak, and adding more RAM sticks puts a too much strain on it significantly reducing achievable clock speeds. Officially, 4 dimms of dual rank memory are only supported at 1866MHz, or 4 dimms of single rank at 2133MHz. Anything above that is an overclock and not guaranteed.

 

Quad channel memory is not supported by Ryzen (using a 4x8GB kit will run in dual channel), it is used on enthusiast and server platforms such as X299 or X399 motherboards. This allows 4 RAM sticks to run simultaneously quadrupling the bandwidth over single channel. Most applications do not saturate dual channel memory bandwidth, and it is more than enough for the average user.

Very informative 

 

Do you think for gaming and light streaming the 7700k or the 1700 is a better choice ?

[Simon771]

2 hours ago, Damascus said:

Actually having more than 2 RAM sticks on ryzen is kind of awful, usually can't go over 2133mhz.

while that's "kinda" true, people are geting 2933MHz on RAM with 4 sticks. But must be single rank ofc.

[DrMikeNZ]

58 minutes ago, Cl1362 said:

Very informative 

 

Do you think for gaming and light streaming the 7700k or the 1700 is a better choice ?

Unless you are going for high FPS gaming, I would consider the 1700 to be a much better choice. if you don't think you will need all 8 cores, you could step down to a 1600.

 

37 minutes ago, Simon771 said:

while that's "kinda" true, people are geting 2933MHz on RAM with 4 sticks. But must be single rank ofc.

Not everyone gets to win the silicon lottery.