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Samsung 840 EVO and RAPID SSD caching: anyone see this?

B

blackened23

Diamond Member
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Basically, what RAPID does is cache the SSD to system RAM and it seems to work beautifully; conventional SSD caching has always cached platter HDs to a NAND SSD. I just caught this but this really does seem to be a break-through - various benchmarks around the web are showing nearly 850MBps write speeds using RAPID caching (!).

Did anyone else catch this? It's still in beta from what I presume, but it is supposed to be ready for prime time at the end of this month - and will work with the 840 EVO and 840 Pro series of SSDs.
 
If you don't have an UPS and you have a powercut, then I hear that it could be quite nasty? RAM only holds what it has awhile powered, so if you did have a powercut and it was going through the RAM, bye bye data.
 
its using a ram drive..

and like spat said... almost anything.. even an unstable system will cause your data to go bye bye.
ie.. power spike.. or something along that nature.
 
Sounds like fancycache!

http://www.romexsoftware.com/en-us/primo-cache/

It's NOT the same thing as a ram drive at all. A ram drive is quite silly in a pc unless you have a specific application tailored to its purpose.

As long as you have a UPS you should be ok. Your system should also be 100% stable so either no overclocking or modest overclocking that you know for sure isn't going to bsod on you...
 
RAPID was discussed at length in the 840 Evo Anandtech article and also in the discussion thread which has been going for a few weeks.

It's also not in beta, it's available now. The 840 Evo drives are in stock and Magician 4.2.1 which supports RAPID is available for download.

I'll be building up my new Haswell + 840 Evo rig next week. Can't wait to see if RAPID is as good as it sounds.
 
If using a 840 evo drive for storage in a laptop and not the OS drive is there any real benefit of RAPID being on for that EVO?

I would probably be running atleast 1 VM all the time on the EVO as well. I have enough ram for the VM and RAPID just not sure if I would see any benefit if its just a storage drive.
 
hennessy1 said:
If using a 840 evo drive for storage in a laptop and not the OS drive is there any real benefit of RAPID being on for that EVO?
Click to expand...
Try it and see. Worst-case is that your battery will go out at just the wrong time and your VM will be FUBARed 🙂. Since the battery gives you an integrated UPS, though, you should be fine.
 
Bear in mind that just because you have a UPS does NOT mean you can't "lose power." There are a great many ways to have a sudden failure or power loss other than just losing AC input. A UPS is good, but certainly not a guarantee against data loss.

That is not to say there is no use for some ram write caching or that it can't be fun! If you have a robust backup method (think complete image based backups of OS, once or more per day) than by all means go for it. OR perhaps as mentioned above it could be great for testing/running VM's.
 
in short.. a bad overclock can cause bad memory writes... which in turn will show jessica rabbit and not bugs bunny.

😛

So if ur gonna write cache..

1. Make sure ur STABLE... and i mean you IBT'd the heck out of your system with memory stress test and it comes out good.
2. You have a dedicated power source with a UPS.
3. Having ECC Ram would absolutely RULE here... however not all systems support it.
 
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