View Full Version : Performance worse than expected

10-10-2013, 10:56 AM
I have a RAIDR SSD and an ASUS P9 X79 E-WS.
I only reach the following numbers with CrystalDiskMark, even after a secure erase:
SEQ: read: 682; Write: 468 (!)
512K. Read: 611; write: 450
4K: read: 34; write: 74
4K QD32: read: 192; write: 258

Shouldn`t I get about 700-800MB for read and write, especially with SEQ? What`s going wrong?
The SSD is plugged in the second blue PCI-E.
I`ve already tried one of the black ones, but it did not help in any way.

Any ideas, how to get the SSD to ist advertised speed?

10-10-2013, 11:45 AM
Did you install the RAIDr as per the guide? (sticky post at the top of this section)

10-10-2013, 12:15 PM
The Installation guide seems to be only important, if you use the SSD for the OS. It only explains, when to use UEFI etc.
I don`t have my OS on the RAIDR. It is only for cache files of some programs etc.

10-10-2013, 01:12 PM
Ah thank you.

What mode of SATA do you have your system set up, I think it would be best if you listed all your hardware and how you have set the RAIDr up.

10-10-2013, 01:24 PM
AHCI mode.
My setup: Core I7 4930K, 32GB RAM, GTX770, 2HDDs, 1RaidR in PCI-E 16x
What else do you want to know?

10-10-2013, 01:45 PM
How you set up your RAIDr card the very first time you installed it :)

10-10-2013, 01:49 PM
One more thing that could be of interest: I had set up Hybridisk and wanted to disable it, because you don`t have access to the RAIDR anymore, if it uses Hybridisk. To get the Raidr back to its normal mode, I ha to to a secure erase and format it in Windows. There are various Options to format it. I just used the GPT Option.
Anyway, the speed was the same as the first time I used the RAIDR, which is slower than I`d expect.

10-10-2013, 01:51 PM
The first time, I just put it in the PCI_e slot and that was it. Nothing else. It`s in non UEFI mode, because I don`t have my OS on it.
BTW., in the RAIDR bios you can also set it up as raid 1. I don`t know, wether this will work, because the manual doesn`t say anything about it.

10-10-2013, 02:12 PM
Currently it will be default RAID 0 with the speed benefits that a stripped array brings, RAID 1 will offer data redundancy (protection) but will be slower.

OK do your have Intel IRST installed at all?

10-10-2013, 02:17 PM
Intel Rapid Storage Technology ist installed, but the RAIDR doesn´t show up there.

10-10-2013, 02:34 PM
Are there any drivers that should be installed for my mainboard for best performance? Before I reinstall any drivers, can you tell me for which ones to look?

10-10-2013, 03:26 PM
The only drivers that I would install are the Intel chipset drivers and those drivers needed for LAN, USB3 and so on.

Your numbers are very close to what you can expect, not sure what the reviewers used when they benched the drive I would suspect ATTO or something similar to that.

10-10-2013, 08:12 PM
I used CrystalDiskMArk as did many testers to test drive speed. Even Asus used it for advertising the speed.

10-11-2013, 08:08 AM
If you use atto you will get the speeds that are listed in the box. because it uses other files than as ssd benchmark etc. Atto gives in most cases the best write/read speeds and because of that these speeds are used for advertising.

Bench the drive with atto and you will see.

"Intel Rapid Storage Technology ist installed, but the RAIDR doesn´t show up there."

Yes. The inteldriver is for the sata ports on the board and has nothing to do with the pcie slots. The only driver for the raidr is "Marvell Magni driver" . Can be found on the cd or wthe website. But i havent seen a difference.

10-11-2013, 08:40 AM
Thanks for the the advice to use ATTO. It shows 815MB/sec write and 824MB/sec read speed. Asus should put this software on the CD instead of Crystal diskmark, if they want their users to get the advertised results.
Anyway, I also saw CrystalDiskMArk to give high numbers in several tests on the web.

10-11-2013, 06:02 PM
What stripe size did you set for the RAID-0 array? A balanced one is 64. Smaller than that favors 4K I/O and higher favors Seq I/O.

10-11-2013, 09:44 PM

where do you set that? In the RAIDR bios?

10-12-2013, 11:20 AM
That gets set up when you configure your RAID originally.

10-26-2013, 12:41 AM
I think the biggest thing people are missing is this. They don't know if the benchmark was using Incompressible or Compressible Data. So this throws the end user in a loop when the specs are not seen when they bench a ssd. As "stevenskl" seen when he used Atto instead of Crystalmark. There is also a few more benchmarks for a ssd out.

AS SSD benchmark 1.7.4739

Anvil Storage Utilities SSD Benchmark