Anyone use Black Magic Disk Speed test from the App Store?

[KPOM]

Originally Posted by MacShopper

Wow, I thought mine was fast, but it's slower than everyone else's above.

But mine is BIGGER!

512 GB SSD
Model: Apple SSD TS512C
Mfgr: Toshiba


Image

That seems a bit slow, even for the Toshiba. It is on a 6Gbps controller now, and that should give you speeds in the 350-400 Mbps range. In any case, you might try another benchmark, since sometimes a controller can give a benchmark a fit, and thus it won't generate a reliable result. Sandforce controllers in particular seem prone to this. I think it has something to do with how the controller treats compressed data vs. uncompressed data. I've read that the Toshiba is a customized Sandforce.

[robvas]

FWIW here is the 128GB Toshiba SSD in my 2011 Air

[BenClement1978]

250 read 250 write 3 WD Black drives. for some reason not letting itself run on the ssd.

[iBookG4user]

Mine isn't a MacBook Air, but I have a 3 SSD RAID 0 in my Mac Pro and it gets stellar results in Aja but lackluster results in Black Magic. It is also due to the compression issue as I am using OCZ Vertex 2's.

[MacRuler]

2012 Macbook Air 13" 128gb toshiba

[oymd]

little late to the party...but happy with results...

MBA 2012 with 256GB SSD, I think its a Samsung..

[beigelightning]

on a 64GB Toshiba 11" i5 mid 2012.

[kbmb]

Also to note for the 2012 models...there are both Toshiba and Samsung SSDs being used. The Toshiba tends to be used more in the 64/128 GB models while the Samsung is for the 256/512 GB models. This is all per this review:

http://www.anandtech.com/show/6063/m...-2012-review/4

Another thing to note is....like the OWC drives, which are Sandforce drives, the Toshiba drives in the 2012 models are also Sandforce. So with Compressed data, you will get slower speeds.

Also, if you are using Filevault (which with a laptop you should be), the Samsung drive is going to perform better because of the compressed data.

Interestingly, I got the i7/256/8GB model....it came with the Samsung drive. Using the Black Magic speed test:

Before Filevault:

Write avg: 403.5 MB/s
Read avg: 446.8 MB/s

After Filevault was interesting....speeds went up:

Write avg: 422.8 MB/s
Read avg: 449.0 MB/s

I was happy with that.

As for Black Magic......it's definitely going to show slower speeds with the Sandforce drives. I have an old OWC 3G drive in my Mac Pro......with AJA I get speeds in the 200's....with Black Magic I get pathetic speeds....on par with traditional drives.

I think the Sandforce drives used to be the best....but I think others have caught up.

-Kevin