Crucial MX200 or Samsung 850 EVO (500Gb)?

We've already mentioned this.

You won't see a noticeable (if any) performance increase between the 840 and the 850. They both use the SATA3 interface and they both come very close to, if not completely, saturating the SATA3 bandwidth limitations.

Those drives, or well any recent SSD, will hit the SATA3 bandwidth cap. You can't go any faster than that using that interface. The only way to do so would be to use PCI-E and NVMe.

3D/V NAND isn't about performance its about density. Making SSD capacity similar to HDDs while driving the cost down.

 

Thanks for this valueable info man, much appreciated.

Now tell me soemthing, I don't care about sequential reads/writes, but why are we stuck at around 38 to 45 MB/S max on the Random 4K Reads and about 112 MB/S on the Random Writes? All I care about is random 4K reads / writes but those don't seem to improve as well.

 

Well that has to do with Samsung, the controller and the speed of the NAND cells. Generally speaking, SLC will give you the fastest, MLC second, and then TLC third.

But sequential read / write with most modern drives will be limited by the SATA bandwidth. With PCI-E / NVMe you are limited by the speeds of the NAND cells.

And thats what I don't like about SSD marketing, its all based on sequential and well who really cares about that since every modern SSD is 500-550mb/s on both...4K random is more important.

 

Me too man, I hate it how they always show you the sequential read/write speeds on the box so the user / buyer think they are buying a super duper drive when all it matters for the average and even power user is the 4K unless one only deals with large files such as video editors and stuff, it's meaningless.

Now about M2 SSDs, my previous G751JY laptop had a Samsung XP941 SSD and although the sequential speeds were close to RAID, the 4K speeds were about 30 MB Read / 70 MB write much lower than the SATA SSDs......

here is the benchmark so this is confusing:

 

Yeah that seems to be a common problem with PCI-E AHCI drives atm. Something with the interface is messing with the 4k speeds.

 

Hopefully Nvme fixes this... It's a bit disappointing to see this happening now but AHCI is in effect an obsolete for these M2 drives... NVMe FTW!

 

I saw the benchmark results in random 4K reads/writes of the Intel 750 PCIe SSD man they're mind blowing! Makes my current 850 PRO look like an HDD compared to it.

 

This is partly because Intel optimized the 750 specifically *for* random performance, which isn't surprising, as Intel seems to focus more on *practical* performance rather than big numbers they can slap on the package, compared to most other companies. The companies making M.2 PCIe SSDs, on the other hand, seem to be optimizing for sequential performance even at the expense of random performance, just so they can advertise with a really big number. I bet a lot of those drives could have better random performance if they wanted them to, they're just more concerned with marketing.

 

You guys have ruined this thread with your discussion of 850 pro and SanDisk extreme, which cost nearly 50% more than mx200 and 850EVO. Didn't you read the title of the thread??

 

Exactly how? Did you read the OP?

I won't let you blame ajkula66 and his $0.02

 

Back to the original topic, has anyone seen an endurance test with 100+TB written on the 850 EVO?

 

Just a matter of opinion, expensive SSD's are not worth getting these days.

Go for the best value, known reliable brand and capacity/performance ratio you need for your setup (120GB or less has impact on performance and endurance of the SSD and not exactly priced that much lower than 250GB+ SSD's to be seen as true value).

IMHO, spending on an expensive SSD at 50-100% more than a consumer grade SSD it just a waste of money and can get double the capacity size on value SSD's or just save you money so that you can spend it elsewhere (upgrade in memory/CPU/GPU or treat yourself on something nice).

If you want piece of mind MLC NAND provides (endurance for consumer grade SSD's), partial power loss data protection, data corruption protection (RAIN), a respectable three year warranty and overall great performance for the money...get the Crucial MX200 (250/500GB).