CPU "memory type" clarification.

[pyrojoe34]

What does it mean when a CPU's specs say it supports a certain "memory type"? For example Haswell-E supports 2133Mhz and Broadwell-E supports 2400Mhz but both can do memory speeds way higher than that (e.g. 3000+Mhz). Does it just mean that's the max speed it supports without overclocking? Like even if you get a 3000Mhz kit, you wont get those speeds unless you use XMP profiles or OC manually?

[Enderman]

yes, speeds higher than that need to use XMP overclock

they also need a motherboard that supports the memory at that speed

 

intel has certain requirements they give to motherboard manufacturers, and ram speed is one of them, thats why intel CPUs officially support 2133

they can do more, but that will depend on the motherboard itself

[done12many2]

That is nothing more than the officially supported memory speed.  Anything above that supported speed is technically an overclock, but is not really viewed that way by most people due to the fact that the memory is certified to run at whatever speed it was certified for.

 

A CPU that supports 2133 memory can indeed run 3200 MHz memory if the memory is actually capable of running at that speed and if the  IMC of the CPU can handle it.  Intel does not guarantee anything above the 2133 that the CPU is rated at, but it is common practice to run memory rated much faster than the 2133. 

[pyrojoe34]

1 minute ago, Enderman said:

yes, speeds higher than that need to use XMP overclock

they also need a motherboard that supports the memory at that speed

 

intel has certain requirements they give to motherboard manufacturers, and ram speed is one of them, thats why intel CPUs officially support 2133

they can do more, but that will depend on the motherboard itself

Thanks, do you know if the extra ram speed (say 2400 vs 3000) makes a significant difference in things like video editing or computations? I know it doesn't matter much for games. Just wondering if it's worth the extra cost of a faster kit for those tasks, it's like a $40 difference (quad channel 32GB kit, ~$120 vs ~$160) and I'm not convinced it's worth it.

[done12many2]

Just now, pyrojoe34 said:

Thanks, do you know if the extra ram speed (say 2400 vs 3000) makes a significant difference in things like video editing or computations? I know it doesn't matter much for games. Just wondering if it's worth the extra cost of a faster kit for those tasks, it's like a $40 difference (quad channel 32GB kit, ~$120 vs ~$160) and I'm not convinced it's worth it.

Yes, more memory bandwidth can definitely help out with rendering and encoding.  

[pyrojoe34]

1 minute ago, done12many2 said:

Yes, more memory bandwidth can definitely help out with rendering and encoding.  

Any good real-world benchmarks you know of? Maybe looking at Adobe products and/or machine learning as benchmarks?

[Enderman]

3 minutes ago, pyrojoe34 said:

Thanks, do you know if the extra ram speed (say 2400 vs 3000) makes a significant difference in things like video editing or computations? I know it doesn't matter much for games. Just wondering if it's worth the extra cost of a faster kit for those tasks, it's like a $40 difference (quad channel 32GB kit, ~$120 vs ~$160) and I'm not convinced it's worth it.

not much of a difference, nothing you can notice

if its like 2400 vs 4000 then yeah $40 is worth it, but for 600MHz its not

maybe like $10-$20 worth

[done12many2]

Cinebench R15 is a great synthetic rendering benchmark.

[pyrojoe34]

12 minutes ago, done12many2 said:

Cinebench R15 is a great synthetic rendering benchmark.

I meant a video or blog of someone that did comparative benchmarks where I can see the real-world difference. Like rendering times at difference RAM speeds with everything else staying the same.