2010 Mac Pro--Why is my SSD so slow?

[gusmahler]

I have a 2010 Mac Pro with a 2.8 GHz processor and 16 GB RAM. Each of the 4 drive bays have a regular hard drive in it. In the optical bay, I have a 120 GB Mercury 6G flash drive.

I got it because I had been reading so much about how much faster SSD drives are. Imagine my surprise when I don't notice a huge increase in performance from it.

I finally got Blackmagic disk tester and compared the SSD to one of my hard drives. Here is the hard drive:

Here is the SSD:

Why is the SSD so slow? Isn't it supposed to be many times faster than a hard drive?

 

[Jambalaya]

I believe you should be seeing 250 or better. EDIT: how did you set it up ?

 

[jenzjen]

Yes, in the optical bay, the SSD should be faster than what you see

 

[xcodeSyn]

Why is the SSD so slow? Isn't it supposed to be many times faster than a hard drive?

Simply put, Blackmagic test is quite meaningless for Sandforce-based SSDs as explained in this thread.

 

[Marty62]

Don't forget that you're on SATA II 3gb/s speeds in the cMP

However, with a Crucial M4 in my standard MP hard disk bay, I get around
230/250 write/read speeds.

So, something is not right about your setup !

M.

----------

Simply put, Blackmagic test is quite meaningless for Sandforce-based SSDs as explained in this thread.

Thanks for that - good to know

M.

 

[gusmahler]

I believe you should be seeing 250 or better. EDIT: how did you set it up ?

It's connected to the SATA connector in the optical bay.

Don't forget that you're on SATA II 3gb/s speeds in the cMP

However, with a Crucial M4 in my standard MP hard disk bay, I get around
230/250 write/read speeds.

So, something is not right about your setup !

Well, I figured that. I'm just wondering what it is that's wrong. I'm probably just going to repurpose the SDD for my next gaming PC build, so it's not a big deal, just wondering if I missed something obvious.

 

[OS6-OSX]

An older M4 64GB in the optical bay

 

[wetnap]

http://www.tomshardware.com/reviews/ssd-upgrade-sata-3gbps,3469.html
To show the real world difference.
Do not confuse the raw sequential speeds as important to os responsiveness, but it seems ich8 southbridge was gimped on many laptops to 1.5gbps for stability even on lenovos.

 

[Verdenshersker]

I have a 2010 Mac Pro with a 2.8 GHz processor and 16 GB RAM. Each of the 4 drive bays have a regular hard drive in it. In the optical bay, I have a 120 GB Mercury 6G flash drive.

I got it because I had been reading so much about how much faster SSD drives are. Imagine my surprise when I don't notice a huge increase in performance from it.

I finally got Blackmagic disk tester and compared the SSD to one of my hard drives. Here is the hard drive:

Image

Here is the SSD:

Image

Why is the SSD so slow? Isn't it supposed to be many times faster than a hard drive?

I get about 260 mb/sek in Read and 120 mb/sek in Write from my Intel X25M 160 GB disc in the hard drive bay.
That is just a comparison, so hope it can help a bit.

 

[iBuildMacs]

If your SSD is on a sled or in the optical bay, you are limited by the Mac Pro drive controller which is @ SATA2 3GB/s even if your SSD is 6GB/s.

You should get a Velocity Solo x2. This will maximize the speed of your SSD to SATA3. Your scores will most likely almost double.

 

[flowrider]

^^^^I have a Velocity Solo x2 here:

https://forums.macrumors.com/threads/1831780/

It's neat solution that actually works GREAT in a 3,1 to 5,1 Mac Pro. PM me if interested.

Lou

 

[Pardus]

why am i so much faster

I have an 840 Evo 1gb ssd in a Mac 3,1 using icy dock. I am getting 258MB/s write and 268MB/s read.