Samsung 830 256GB, slow random read/write

I'm having some trouble with the samsung 830 SSD that I installed as well. Windows 7 wouldn't register it as in my system, even though Samsung Magician and the bios did. Then I used my windows disk to create a new partition for it, and then I exited out. After this I was able to format it in windows and it registered it.

Now when I tested the speed of it, the sequential read was 515, the write was about 490. Now when it came to the random read/write I was getting 58000 IOPS and 23000 IOPS respectively. These seem very low to me, is there something i'm doing wrong?

1) The bios was already in AHCI mode when I first booted up.
2) This is not the primary drive, my OCZ Vertex 3 has Windows on it and is performing at expected speeds.
3) It is plugged into the Intel 6GB/s port. (both are) with a 6GB/s Cable.
4) Firmware is up to date.
5) I have not installed my motherboard drivers yet, is there something that would speed it up? (Asus p8z68 vpro gen 3)

Thank you for all your help.

What did you test them with? If it's a low queue-depth test, that chould explain if IOPS not reaching spec. IOPS are usually reached with higher queue depth tests/workloads... But Samsung 830 isn't really the best drive out there for IOPS either. I think it's a good SSD, but I also think it quite overrated by many.

I don't know what the specs say but those numbers aren't really bad so I wouldn't worry. Now yes, install the drivers, more specifically the latest Intel ones.

Aesma said:

I don't know what the specs say but those numbers aren't really bad so I wouldn't worry. Now yes, install the drivers, more specifically the latest Intel ones.

Click to expand...

This. Also, if you want to max out numbers in benchmarks you'll need to disable C states & EIST and change minimum processor state to 100% under power options.

I re-tested with AS SSD Benchmark.
Here were my results on both drives.

Now on this one, my OCZ speeds are slower than the other?
http://imgur.com/R1Zc2

http://imgur.com/MRtM3

Edit* I just ran ATTO benchmark, and both of drives performed just as results online said. Is this a reliable one?

ATTO is a bad benchmark for sandforce based drives since it uses a 0 fill.

Shabutie said:

I re-tested with AS SSD Benchmark.
Here were my results on both drives.

Now on this one, my OCZ speeds are slower than the other?
http://imgur.com/R1Zc2

http://imgur.com/MRtM3

Edit* I just ran ATTO benchmark, and both of drives performed just as results online said. Is this a reliable one?

Click to expand...

Of course the OCZ sandforce is going to be slower with AS SSD. It benches uncompressed data, which is something sandforce isn't very good at. Despite most reads & writes under windows being uncompressed, you won't notice the difference outside of benchmarking. Anyway, those scores look about right to me.

Edit: Atto is reliable, but it uses compressed data, which happens much less frequently in real life usage.

drescherjm said:

ATTO is a bad benchmark for sandforce based drives since it uses a 0 fill.

Click to expand...

That and it's what most sandforce vendors use for their SSD specs.

drescherjm said:

ATTO is a bad benchmark for sandforce based drives since it uses a 0 fill.

Click to expand...

It's an unrealistic benchmark, but if it gives you 500MB/s then you know the drive is working as intended.

MissJ84 said:

Of course the OCZ sandforce is going to be slower with AS SSD. It benches uncompressed data, which is something sandforce isn't very good at. Despite most reads & writes under windows being uncompressed, you won't notice the difference outside of benchmarking. Anyway, those scores look about right to me.

Edit: Atto is reliable, but it uses compressed data, which happens much less frequently in real life usage.

That and it's what most sandforce vendors use for their SSD specs.

Click to expand...

I think you're confused. Sandforce loves compressible data, because it compresses it itself, thus writing much less and more quickly. A bunch of 0 is easily compressed, for example. Incompressible data however will give the "real" speed of the drive. Incompressible data is incompressible because it's already compressed, so you have it backwards.

Aesma said:

I think you're confused. Sandforce loves compressible data, because it compresses it itself, thus writing much less and more quickly. A bunch of 0 is easily compressed, for example. Incompressible data however will give the "real" speed of the drive. Incompressible data is incompressible because it's already compressed, so you have it backwards.

Click to expand...

Yeah, I meant incompressible/compressible, not uncompressed/compressed.Oops

OP: one other thing you could try is secure erasing the 830 and then re-initializing/formatting it again. I've read about drives coming from the factory in a non-clean state (bad QC processes).