Show us your SSD performance

Dave76 said:

Brittas said:

I got snipper tool just had pic on camera. I was at work.
The only worry is that SSD's dont last that long.I better back some stuff up (game wise)

The rumors that SSDs don't last long were exaggerated.

SSD Write Endurance 25nm Vs 34nm


The SSds are being written to as fast as possible to get actual life expectancy data.

They are lasting a very long time, much longer than the manufactures stated amount of writes.

At these amounts, an SSD will last a average user 10-20 years or more.

The Crucial m4 wrote over 800TB before it quit working.
This is what Britta is using.
That should be a good system for them.

m4 became undetectable on multiple mother boards.
Cause of failure of the m4 was inconclusive.
Internal electronic part failure. As simple as a capacitor or resistor.
The controller could have failed.

NAND did not wear out from bad sectors/blocks etc.
RAS- 00 Reallocated sectors. None.

B.A.T. Post #2528 > http://www.xtremesystems.org/forums/...s-34nm/page102

This was my last result update.
m4
768.5687 TiB
2749 hours
Avg speed 88.43 MiB/s.
AD gone from 171 to 169.
P/E 13330.
Value 01 (raw read error rate) has changed from 43 to 46.
MD5 OK.
Reallocated sectors : 00

The M4 passed MWI-1 at 170.8 TiB.

There were no problems before I turned my rig off the 28th oct. It just didn't like 9 days without power.

Received my OCZ Vertex 2 SATA II SSD today, did clean installation of windows. Downloaded and executed benchmark and here is the result



something doesn't seem right, the result is quite low compared to what says on the box - Read 285 MB/s Write 275MB/s

Devilz said:

Received my OCZ Vertex 2 SATA II SSD today, did clean installation of windows. Downloaded and executed benchmark and here is the result
something doesn't seem right, the result is quite low compared to what says on the box - Read 285 MB/s Write 275MB/s

I hate to be the bearer of bad news, but.. You are in IDE mode. You need to be in AHCI mode. This tutorial on how to change to AHCI will show you how to do it.

Essenbe beat me to it, but he is correct.

SSD Alignment

You can enable ACHI after installation:

AHCI : Enable in Windows 7 / Vista

A Guy


Ooops, I see he has edited his post and added the tute

The guys are right - you will get better nums in AHCI mode. That, however, may not translate into a big difference in real (OS) life. Just to warn you in case your performance does not change significantly and you wonder why. Reason is because the access time is not going to change.

carwiz said:

I'm pretty sure it will increase significantly. The access time shown is a measurement of how long it takes to address the first block. After that, sequential transfers are measured in nano-seconds. The OS makes frequent use of sequential reads and writes, especially when loading programs or paging memory. The limitation will fall on SATAII.

The theory is right. But in practice we are talking about very little data that the OS manipulates at each time - and that mostly in 4K blocks. So the real impact of a slow data transfer speed should be minimal.

Devilz said:

Received my OCZ Vertex 2 SATA II SSD today, did clean installation of windows. Downloaded and executed benchmark and here is the result



something doesn't seem right, the result is quite low compared to what says on the box - Read 285 MB/s Write 275MB/s

I agree there is a benefit when using AHCI or RAID (same benefit for both, they are basically the same).

The red font letters "pciide - BAD" indicates you are in IDE mode, as already mentioned.

The "BAD" indicates your SSD is not correctly aligned, this will cause poor performance.

The best way to ensure proper alignment is to point the Windows 7 installer to a unformatted SSD, it will align and format the drive for you.
Cloning or using a backup from a HDD will not have the right alignment.

Here is a good tutorial that will help you with alignment.
SSD Alignment