Are these speeds for real?

[Aleksbgbg]

Used Samsung's RAPID mode, and got these insane read speeds....

Obviously SATA 3 is capped at 600MB/s and this is just wasting CPU speed, but if this was m.2 would these speeds apply (assuming the m.2 thing was originally 540MB/s, the advertised speed of the drive)?

Or are the speeds just incorrectly assumed, and this possibly increases little of the actual performance?

 

[Deli]

No is the answer.

 

Rapid mode is just a gimmick.

 

 

 

 

[Jacktastic-Mofo]

Use cyrstal disk mark, it's pretty much the standard. Another alternative is the black magic ssd speed test.

[Arty]

It's using ram as cache

[akskl]

Considering you have a Samsung SSD and are using a Samsung program, I say no. Of course the company who owns the drive will make them seem glorified

[Domifi]

Samsung RAPID Mode uses the RAM as cache. It is fast, but in the case of a power outage the data that's still in your cache and not on the actual drive would be lost.

[Aleksbgbg]

2 minutes ago, Domifi said:

Samsung RAPID Mode uses the RAM as cache. It is fast, but in the case of a power outage the data that's still in your cache and not on the actual drive would be lost.

So I am going to see a performance increase somewhat?

[Domifi]

1 minute ago, Aleksbgbg said:

So I am going to see a performance increase somewhat?

 

Yes, mostly when writing to the disk. The results of the performance test are actually legit, but it's using RAM as cache and that's why the numbers are so high.

[EmeraldFlame]

As @Domifi said, this is RAPID mode which uses your RAM as a cache. 

When you write a file to your SSD what actually happens with rapid mode is that it actually writes to RAM first really quickly. Then it flushes that to the disk whenever it can. It can have an increase on perceived speed and responsiveness, but doesn't actually make the data get to the SSD faster.

If you don't have a UPS you generally want to turn this off. If your PC gets turned off, be it through power outage or accidental shutdown, and there is still data in the RAM cache, you lose all that data.

Also please try to use the forums search functions. This question gets asked literally every day or two.