Question how to know what is the maximum memory i can use with my metherboard and CPU?

[I7210I]

Hello,
i would like to buy I9-9900K and would like to know what is the maximum ram i can run with him? or how to check what is the maximum , currently i don't have the CPU.
Thanks

 

[Barty1884]

Max Memory Size (dependent on memory type)128 GB

https://ark.intel.com/content/www/u...9900k-processor-16m-cache-up-to-5-00-ghz.html

 

[I7210I]

https://ark.intel.com/content/www/u...9900k-processor-16m-cache-up-to-5-00-ghz.html

Thanks and max speed is only DDR4-2666 ?

 

[Barty1884]

Natively, yes. Anything higher is technically an overclock, but higher speeds shouldn't be a problem with 'normal' configurations (2x8, 2x16GB, etc). Trying to run 4x16GB @ say 3600MHz might be a little more difficult.

And, note that all Z390 boards max out at 4 DIMM slots, and unregistered 32GB DIMMs don't exist AFAIK. So while the CPU can 'support' 128GB in theory, it's "real world" max is more likely 64GB, unless I've missed the launch of 32GB DIMMs.

 

[I7210I]

so 2X8 of 3600 will work, but than i need to make some configuration according to the motherboard to get these speeds?

 

[Barty1884]

Should just work, yes. Set XMP and forget it, in most cases.

3600MHz is probably overkill, and overpriced for most users. A solid 3000-3200MHz kit should be plenty.

 

[I7210I]

these will make much different between 2666 than 3000 in daily work?

 

[Barty1884]

Really depends on the workload in question, but on the Intel front, memory speed is much less of an issue than it can be on a comparable AMD platform.

There will always be some exceptions to that general rule though. What do you consider "daily work"?

 

[I7210I]

internet, some HD videos, office work, gaming here and there, premiere, photoshop..not something strong

 

[Barty1884]

Honestly, for those types of workloads, unless premier or photoshop etc are heavy use cases, I wouldn't even look to a 9900K in most cases.

From a more hobbyist level, along with video playback, browsing & office work.... even something like an i5-9400 or 9400F (no iGP) would be very solid offerings for <40% of the price of a 9900K.
Maybe even something like a Ryzen5 2400G (4c/8t with a solid iGP) would be plenty viable.

 

[I7210I]

so no need to even speedy memorys, or 10gen of intel...