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SSD Random Read/Write Speed Survey

Hi again all. The posts have been great! Thanks to everyone for pitching in. Given all the responses, I've decided to make a quick summary of what we have so far. Here are the averages, by brand, of SSDs for which we have at least two samples. Only data for the 4k random read/write is shown. I hope this helps!
 

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Hello MR,

Just weighing in with my scores for a mid-2010 base 13" with an intel x25v (dont see many of them around these parts) installed to my optibay.

I did find that the xbench results fluctuated quite a bit. But this one seemed to be about right.

xbenchcopy.jpg
 
Well, it seems Intel G2 rocks :)

Here you go, mine:

Results 313.24
System Info
Xbench Version 1.3
System Version 10.6.3 (10D2094)
Physical RAM 4096 MB
Model MacBookPro6,2
Drive Type INTEL SSDSA2M160G2GC
Disk Test 313.24
Sequential 204.14
Uncached Write 183.85 112.88 MB/sec [4K blocks]
Uncached Write 173.33 98.07 MB/sec [256K blocks]
Uncached Read 169.06 49.48 MB/sec [4K blocks]
Uncached Read 404.74 203.42 MB/sec [256K blocks]
Random 672.79
Uncached Write 758.39 80.28 MB/sec [4K blocks]
Uncached Write 319.38 102.25 MB/sec [256K blocks]
Uncached Read 2317.30 16.42 MB/sec [4K blocks]
Uncached Read 939.62 174.35 MB/sec [256K blocks]
 
MacBook Pro 15" i7, 6 GB of RAM

Intel X25-M G2 80 GB in optibay:

Results 280.37
System Info
Xbench Version 1.3
System Version 10.6.3 (10D2094)
Physical RAM 6144 MB
Model MacBookPro6,2
Drive Type INTEL SSDSA2M080G2GC
Disk Test 280.37
Sequential 182.56
Uncached Write 145.36 89.25 MB/sec [4K blocks]
Uncached Write 143.56 81.23 MB/sec [256K blocks]
Uncached Read 175.42 51.34 MB/sec [4K blocks]
Uncached Read 422.88 212.54 MB/sec [256K blocks]
Random 603.90
Uncached Write 708.29 74.98 MB/sec [4K blocks]
Uncached Write 263.20 84.26 MB/sec [256K blocks]
Uncached Read 2405.14 17.04 MB/sec [4K blocks]
Uncached Read 1003.42 186.19 MB/sec [256K blocks]



Hitachi 500 GB 7200 RPM:

Results 54.40
System Info
Xbench Version 1.3
System Version 10.6.3 (10D2094)
Physical RAM 6144 MB
Model MacBookPro6,2
Drive Type Hitachi HTS725050A9A364
Disk Test 54.40
Sequential 142.78
Uncached Write 160.81 98.74 MB/sec [4K blocks]
Uncached Write 157.50 89.11 MB/sec [256K blocks]
Uncached Read 101.53 29.71 MB/sec [4K blocks]
Uncached Read 178.65 89.79 MB/sec [256K blocks]
Random 33.60
Uncached Write 11.06 1.17 MB/sec [4K blocks]
Uncached Write 111.47 35.69 MB/sec [256K blocks]
Uncached Read 80.26 0.57 MB/sec [4K blocks]
Uncached Read 138.91 25.78 MB/sec [256K blocks]
 
I have a G.Skill Titan, which started off in an Asus C90S and was transferred to my Mid 2009 Unibody (5,5). This is the machine in my signature. This has been in use for about 14 months now. 128GB.

Not bad at all...
 

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John Kotches said:
I have a G.Skill Titan, which started off in an Asus C90S and was transferred to my Mid 2009 Unibody (5,5). This is the machine in my signature. This has been in use for about 14 months now. 128GB.

Not bad at all...
Click to expand...

Actually, that's pretty bad for an SSD.

Have you thought about running a secure erase on the drive to bring it back to its original performance?
 
Apple 512GB SSD:

Disk Test 323.10
Sequential 223.41
Uncached Write 339.92 208.71 MB/sec [4K blocks]
Uncached Write 309.77 175.27 MB/sec [256K blocks]
Uncached Read 107.42 31.44 MB/sec [4K blocks]
Uncached Read 412.39 207.26 MB/sec [256K blocks]
Random 583.48
Uncached Write 386.86 40.95 MB/sec [4K blocks]
Uncached Write 420.01 134.46 MB/sec [256K blocks]
Uncached Read 1993.39 14.13 MB/sec [4K blocks]
Uncached Read 720.49 133.69 MB/sec [256K blocks]

Didn't bother to kill Safari, etc. while running. Interestingly, I notice that sometimes when I access a directory in finder, it pauses for a second or three before giving a listing... common?
 
Intenost said:
Hi,

2010 i7 "15 MBP

Crucial C300 256MB SSD (52gb free).
I've been using the SSD for about one week now.
Click to expand...


I dunno how you do it :(, I have a C300 as well on a i7 15" with 8GB and my results look really poor. I use the disk a lot though and have only 32Gb free.
Wish there was a way to speed it up again

macbookproc300.jpg
 
If your SSD is too slow it might be too full.
The firmware tries keeping performance up and that is more and more difficult the less free space is available. I would guess filling it up more than 75% is not a good idea and less is better.
Sandforce drives keep aside a quite huge space you cannot use so performance is good and also reliability. Most consumer drives do not do that.

That is why I won't buy one until the 256GB are cheap enough.

Also running some garbage collection tool might help, if the SSD has no special firmware that takes care of this.
 
I just ordered a G2 Intel X25-M 160GB, and I'm very happy to see that the overall disk scores for xbench are so high. I've been reading reviews for a long time and finally decided to bite the bullet and order one. Should be here in the next couple days or so. :D
 
For all the C300 owners in the list, Crucial just released a new Firmware:

0002 256GB Crucial RealSSD C300 Part #:CTFDDAC256MAG-1G1 Release Notes guide — firmware[X] Release Date: 5/4/2010

Change Log:

* Improved Power Consumption
* Improved TRIM performance
* Enabled the Drive Activity Pin (Pin 11)
* Improved Robustness due to unexpected power loss
* Improved data management to reduce maximum write latency
* Improved Performance of SSD as it fills up with data
* Improved Data Integrity

Note: This requires a Low Level Format to the SSD which will erase any data on the drive.
Please ensure that your data is backed up prior to performing the Firmware Update. We are hopeful that future Firmware revisions/updates will not be destructive.

http://www.crucial.com/firmware/0002/C300_FW0002.zip

I never did an SSD firmware upgrade on a MacbookPro, it seems like we need to format the drive.
 
Specs in signature. Toshiba/Apple 256GB SSD

Go Apple!
 

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