250Gb 840 Evo slow speed and BSOD when using RAPID

[IPoteven]

Hello everyone, I just got a brand new SSD for my rig. I downloaded Samsung magician, optimize my OS, etc. When I did the performance benchmark, I hitted:

Seq read - 527 (default 540)
Seq write - 463 (default 520)

random read - 67 512 IOPS (default 97 000)
random write - 59 246 IOPS (default 66 000)

My setup:

CPU: FX 8350
MB: Gigabyte 990FXA-UD3 Rev 3.0

I have the lastest BIOS, lastest AHCI. I tried using RAPID mode, but my OS doesn't boot if I activate it, I have a BSOD for half a sec(can't read it)
Any ideas what could be the problem?

[CoolaxGaming]

To anyone who said I was doing something wrong with the EVO 250gb 

Here is my reply - HA

I understand, I have the same problem but wait till my next post in a minute

[CoolaxGaming]

Ok, if you cant enable RAPID then there should be an option called Over Provisioning, Enable it wiht 10%.

I had a long talk with samsung support over a week and seems AMD boards sata controller isint strong enough to handle em SSD's

[Enderman]

Did you reinstall windows?

Please don't tell me you cloned your OS...

[Random Access Soda]

I guarantee you would not have this problem if oyu bought a kingston SSD. Sangsung junk.

[IPoteven]

I reinstalled a new windows, and I CAN enable RAPID, but my OS won't boot(I have a blue screen for half a sec in the windows loading screen and it reboot)

[IPoteven]

Hello everyone. I just got my PC back (http://linustechtips.com/main/topic/268285-pc-doesnt-boot-black-screen-no-beeps-no-hdd-activity-light/#entry3643196) and now when I'm testing my SSD performance with my new Asus Crosshair Formula-Z, I hit:

402 read(rated at 540)
307 write(rated a 520)
58 000 random read(rated a 97 000)
41 000 random write(rated 66 000)

What could slow down my SSD ? I heard AMD SATA controllers could be the problem.
 

[JamesYang]

I've heard some Samsung's SSD specially EVO series,have drop-speed issue,Didn't they released a firmware to fix that?

 

Although you have the latest BIOS and AHCI drivers,but you sure your windows is actually recognise AHCI not IDE?

 

And what kind of software you test with? AS SSD Benchmark(This should show that if AHCI is actually turn on)

[Steven9595]

Samsung released a firmware fixed for the 840 Evo degraded speeds. 

http://www.samsung.com/global/business/semiconductor/minisite/SSD/us/html/support/downloads.html

[Prastupok]

Samsung released a firmware fixed for the 840 Evo degraded speeds. 

http://www.samsung.com/global/business/semiconductor/minisite/SSD/us/html/support/downloads.html

 

Also, theoretical maximum shouldn't be expected, especially with data on it.

[IPoteven]

I've heard some Samsung's SSD specially EVO series,have drop-speed issue,Didn't they released a firmware to fix that?

 

Although you have the latest BIOS and AHCI drivers,but you sure your windows is actually recognise AHCI not IDE?

 

And what kind of software you test with? AS SSD Benchmark(This should show that if AHCI is actually turn on)

 

I use the samsung magicia program, it says that I'm using AHCI and I use their benchmark to test my SSD(which could be outputting higher numbers, but I'm still below rated speed.)

 

Samsung released a firmware fixed for the 840 Evo degraded speeds. 

http://www.samsung.com/global/business/semiconductor/minisite/SSD/us/html/support/downloads.html

I'll check this out

[Steven9595]

Also, theoretical maximum shouldn't be expected, especially with data on it.

Well even with my 250GB 840 Evo drive full, I get just a hair above "max" speeds in the Samsung Magician drive test (this is after I did the firmware update); before I was getting about 100MB/s below advertised speeds.

[IPoteven]

I got around the same speed with the new firmware.