slow ssd speeds?

steelwolf

steelwolf

steelwolf

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10 Sep 2008
Posts
169
Hi,

I recently upgraded top my first ssd (crucial mx100) Its the 256gb version but when i test with crystalmark im onl;y getting read and write speeds of around 250mb/s . Is this normal? i was expecting 500.

I installed windows 7 on a fresh install and enabled ahci before the instalation.

Edit:- I only have sata 2 in my prehistoric rig, that would explain why i have slow speeds :(

thanks in advance.

Also since swapping to ahci, i get a consistancy error on 1 of my drives during boot up and once in windows i cant see that drive at all. Im assuming its the one plugged into my 5th sata port? Can this be enabled under ahci?
 
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Not sure about the consistency error, but even on SATA2 you'll still get 90%+ of the benefit of an SSD due to super low latency.
 
steelwolf said:
Hi,


Also since swapping to ahci, i get a consistancy error on 1 of my drives during boot up and once in windows i cant see that drive at all. Im assuming its the one plugged into my 5th sata port? Can this be enabled under ahci?
Click to expand...

Depends on the motherboard bios. There should be a setting to make each of the SATA ports to AHCI. May be in peripheral settings if it is an additional controller.

As above, you will still benefit from the SSD as it's access times will be much lower than a mech drive.
 
This is something I've been wondering about as well as I bought a Crucual MX100 not long ago.

I did a test on it the other day and got these figures:

8yagSmY.jpg


Is that something to be expected or is it bit slow?

I can't check if the SATA is on AHCI at the moment as I'm having a problem where the screen doesn't engage until Windows loads...that's a different problem I'm trying to sort out. :rolleyes:


Thanks!
 
I've run that now and I've found the controller, it is running on a Marvell SATA 6G controller.

I'll have to see if I can replumb the drives and put it onto an Intel controller...there are seven drives in there so it might be a bit of a challenge!

PgyoMcD.jpg


Will changing it to an Intel port make a huge amount of different or will it be a lot of effort for not much gain? I use it for easy searching and checking for duplicates of my photos and it's the games loading drive for Steam.
 
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TheBigCheese said:
Will changing it to an Intel port make a huge amount of different or will it be a lot of effort for not much gain? I use it for easy searching and checking for duplicates of my photos and it's the games loading drive for Steam.
Click to expand...

Intel will give you better benchmark results if it's SATA 3, likely worse if SATA 2.

If you have Intel SATA 3 you may not particularly notice an improvement in real world usage but at least you'll know the SSD is running at it's best possible speeds.
 
Thanks for your replies, this is really helpful! :)

It's a Gigabyte Z77X-D3H, the motherboard manual says this:

Chipset:
- 2 x SATA 6Gb/s connectors (SATA3 0/SATA3 1) supporting up to 2 SATA
6Gb/s devices

- 4 x SATA 3Gb/s connectors (SATA2 2~SATA2 5) supporting up to 4 SATA
3Gb/s devices

- 1 x mSATA connector
* The SATA2 5 connector will become unavailable when the mSATA connector is installed with a solid state drive.

Marvell 88SE9172 chip:
- 2 x SATA 6Gb/s connectors (GSATA3 6/GSATA3 7) supporting up to 2 SATA
6Gb/s devices


So looking at that I should make sure that the MX100 is on SATA 1.


Oooh, this is interesting, I've just done a test with my 128GB M4, and got these readings. It's the boot drive so should be on SATA 0 already.

sUaKloB.jpg


If that's the read speeds I can get with an older drive I really do need to be swapping the ports over, that's a lot better!
 
TheBigCheese said:
It's a Gigabyte Z77X-D3H, the motherboard manual says this:

Chipset:
- 2 x SATA 6Gb/s connectors (SATA3 0/SATA3 1) supporting up to 2 SATA
6Gb/s devices

So looking at that I should make sure that the MX100 is on SATA 1.
Click to expand...

Those are the ports you need to use, they're the white ones.

It looks like you have the M4 plugged into one of them.
 
Well...aren't I pleased I jumped in on this thread.

Thanks very much for the help and advice Surveyor, with a couple of cable changes these are the new readings I've got:

6JjoKNG.jpg


I'm rather pleased with that! :D:D:D
 
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