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m2 drive and ram cache

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m2 drive and ram cache
As m2 drives are super fast already, I started to think about the ram cache feature some asus boards have.
Is m2 faster than ram? If not, is it worth using ram cache on top of an m2 drive?
Are there any risks of data loss?
#1 ·
Dont know much about it either :/
#2 ·
M2's are fast, but NVMe's are even faster.
Both are still slower than RAM, but they're non-volatile unlike RAM is.

RAM cache is only worth it if you have enough overhead (such as having 32GB, but only using 8GB of it on a regular basis), and once again RAM is completely volatile, and you'll lose all your data as soon as your machine turns off. Using it for quick read/writes cycles like encoding videos may be worth it, and then transferring it over to a HDD,SSD,M2, or NVMe.


#3 · edited ·
Quote Originally Posted by Aborted View Post
M2's are fast, but NVMe's are even faster.
Both are still slower than RAM, but they're non-volatile unlike RAM is.

RAM cache is only worth it if you have enough overhead (such as having 32GB, but only using 8GB of it on a regular basis), and once again RAM is completely volatile, and you'll lose all your data as soon as your machine turns off. Using it for quick read/writes cycles like encoding videos may be worth it, and then transferring it over to a HDD,SSD,M2, or NVMe.


Literally universal genius, you never cease to surprise me.
#4 ·
Quote Originally Posted by Aborted View Post
M2's are fast, but NVMe's are even faster.
Both are still slower than RAM, but they're non-volatile unlike RAM is.

RAM cache is only worth it if you have enough overhead (such as having 32GB, but only using 8GB of it on a regular basis), and once again RAM is completely volatile, and you'll lose all your data as soon as your machine turns off. Using it for quick read/writes cycles like encoding videos may be worth it, and then transferring it over to a HDD,SSD,M2, or NVMe.


Please. You explain it and it made sense. How you do this. Please teach me.
#5 ·
Quote Originally Posted by Aborted View Post
M2's are fast, but NVMe's are even faster.
Both are still slower than RAM, but they're non-volatile unlike RAM is.

RAM cache is only worth it if you have enough overhead (such as having 32GB, but only using 8GB of it on a regular basis), and once again RAM is completely volatile, and you'll lose all your data as soon as your machine turns off. Using it for quick read/writes cycles like encoding videos may be worth it, and then transferring it over to a HDD,SSD,M2, or NVMe.


Is it possible to have it write information to drive periodically?
Say every five minutes, preventing complete data loss?
I'd love to have an NVMe setup as a system drive, having ram cache on top as I did intend to work my way towards 64gb's worth of DDR4's.
Progressing to having a bigger amount of storage with pretty much lightning fast bootups and transfers.
#6 ·
Quote Originally Posted by Gray View Post
Is it possible to have it write information to drive periodically?
Say every five minutes, preventing complete data loss?
I'd love to have an NVMe setup as a system drive, having ram cache on top as I did intend to work my way towards 64gb's worth of DDR4's.
Progressing to having a bigger amount of storage with pretty much lightning fast bootups and transfers.
So basically you want to create a 64GB persistent Ramdisk, with your OS on an NVMe.
Yeah you can do that, most RAM Disk software allows for the scheduled creation of system images; creating an active system image of your RAM disk, and saving it on to your non-volatile NVMe drive, and if anything goes wrong it can easily boot the last saved image.
#7 ·
Quote Originally Posted by Aborted View Post

So basically you want to create a 64GB persistent Ramdisk, with your OS on an NVMe.
Yeah you can do that, most RAM Disk software allows for the scheduled creation of system images; creating an active system image of your RAM disk, and saving it on to your non-volatile NVMe drive, and if anything goes wrong it can easily boot the last saved image.
That sounds exactly like what I need. I'd likely have out of the 64gb at least 32gb worth of cache.
So that everything else that may be running have more than enough space to work on.

Would you say that the extra speed is worth it?
How much would it affect the bootup time, would I be looking at a few seconds to boot the PC up?

Say I get a Samsung 950 Pro Series MZ-V5P256BW 256GB as a the drive to have it store on, with the ram cache.
The speed is already around 2200mb/s for read and 900mb/s for write, what speeds would be expected with all of this? Is there like a percentual increase, is there a drop off point where it's simply not worth it anymore?

How much will the clocking speed of the ram affect this in terms of work speed? Because I'm looking at 3200, 3333 and 3400's.
#8 · edited ·
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