Samsung 840 performance issue

[nicehat]

Hi all, Ive been having a tough time getting my samsung 840 120 gb ssd to perform to its specs. Ive attached the benchmarks and the ACHI settings in my BIOS. I also set the "Performance" setting in the Samsung Magician software. How do I get my Random Read numbers up? 

 

I have a MSI 990FXA GD80v2 motherboard. 

[Elbstrand]

How much free space do you got left on your SSD? Did you set a overprovisioning?

 

PS. Also try another benchmark software, i don't think this magician software is really reliable.

[nicehat]

Thanks for the quick response. Its a fresh install of windows 8 and the magician software and nothing else. I have eaten up 19GB of space and have 93GB left over. 

 

In the over provisioning window, it tells me that I have 11.1 GB thats been alloted. 

 

Edit: Ill try another bench-marking tool. Do you know any that are particularly reliable? 

[mgsstar]

Thanks for the quick response. Its a fresh install of windows 8 and the magician software and nothing else. I have eaten up 19GB of space and have 93GB left over. 

 

In the over provisioning window, it tells me that I have 11.1 GB thats been alloted. 

 

Edit: Ill try another bench-marking tool. Do you know any that are particularly reliable? 

HDTune is a pretty good benchmarking software imo.

[nicehat]

hi guys I did another benchmark with HD Tune PRO and this is the result

 

Sequential Read: 448437 KB/s (?)

Sequential Write: 134599 KB/s

 

4KB random single read: 6741 IOPS (wtf?)

4KB random single write: 9101 IOPS (wtf?)

 

According to this new benchmark, my hard drive hates being an SSD. Am I right or am I wrong?

[Elbstrand]

hi guys I did another benchmark with HD Tune PRO and this is the result

 

Sequential Read: 448437 KB/s (?)

Sequential Write: 134599 KB/s

 

4KB random single read: 6741 IOPS (wtf?)

4KB random single write: 9101 IOPS (wtf?)

 

According to this new benchmark, my hard drive hates being an SSD. Am I right or am I wrong?

 

Use:

• CrystalDiskMark
• AS SSD Benchmark
• ATTO Disk Benchmark

 

run them 1-2 times each and post the results / screenshot of each try.

 

Maybe there is something wrong with either your controller or ssd.

[nicehat]

Ok, so here are my bench marks. Before I started the tests, just for kicks, I decided to compare my results above using SATA 1 cables with my results below using SATA III cables. Not too much changed as we all knew

 

SATA3 cable
http://postimg.org/image/43fr2gv99/

 

Now for the Crystal Disk Mark Bench mark:

http://postimg.org/image/yo57fvx11/

 

ATTO Disk Benchmark:

http://postimg.org/image/n920uiel9/

[mgsstar]

The ATTO Disk Benchmark and the Crystal Disk seems to be reporting the right numbers since the Sequential Read Speed can go up to 530MB/s while the Sequential Write Speed

can go up to 130MB/s. http://www.samsung.com/us/computer/memory-storage/MZ-7TD120BW-specs

[nicehat]

But the problem is the Random Read, which isnt included in either of those benchmarks? Unless Im not reading something correctly. I looked again, and the two programs dont benchmark either the Random Reads or the Random Writes. Again, Im def a noob here so I might be reading something wrong. 

 

 

Maybe there is something wrong with either your controller or ssd.

 

Im going to try upgrading the firmware. First I gotta get a wireless internet adapter..Off to best buy! Ill update as soon as I get it all together. 

[penance]

It looks like your Read and Write speeds are right on the money if that's what you are referring too. If you were expecting over 130 MB/s your only going to that with a PRO series drive.

[Elbstrand]

But the problem is the Random Read, which isnt included in either of those benchmarks? Unless Im not reading something correctly. I looked again, and the two programs dont benchmark either the Random Reads or the Random Writes. Again, Im def a noob here so I might be reading something wrong.

 

Let my try to research something, got a 840 120gigs in my brothers pc.

[nicehat]

So I went over to Toms Hardware and applied the performance tweeks. I saw a bit of improvements but not anything close to what I should be getting.

Heres the site:

http://www.tomshardware.com/reviews/ssd-performance-tweak,2911.html

And here are my results:

http://postimg.org/image/8z1d7d8b5/

Should I download this AMD Chipset driver rev.13.4?

http://support.amd.com/us/gpudownload/windows/Pages/raid_windows.aspx

I spoke with tech support over at Samsung and the tech told me that it def wasnt normal to have 1/2 or close to half Random read speeds. He told me to update my firmware, but at the time I didnt have a wireless card to do so. I went ahead and connected to the internet now, updated windows 8 and the magician firmware and then ran the tweeks. The result of all that is above. I hope its not my SSD, just came in the mail!

[nicehat]

Let my try to research something, got a 840 120gigs in my brothers pc.

 

Thanks! Appreciate it!

[mgsstar]

Sorry to bump this but I think I am sort of getting the same problem: I got a bit more speed by going into device manger and finding my ssd, clicking properties, went to polices and unchecked the "enable write caching on the device" if you already have it checked, press ok, go back to the policies section and checked it and pressed and got a bit of performance boost. I tried putting the cpu on load in the background while bench marking by running P95 on small FFT and seem to have gotten a performance boost. Do you think this benchmark is good enough or do you think it should be able to reach those random write speeds?

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