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PCIe SSD in New rMBP 13" Not Fast?

G

greenglue

macrumors regular
Original poster
Sep 11, 2010
109
0
QC, Canada
Hi!

I got my new rMBP 13" (2.4GHz i5, 128GB SSD, 4GB RAM) last Friday and have been running the BlackMagic Speed Test on my disk with a 5GB default file setting only to notice that the WRITE speed is the speed I used to get on a non-PCIe SSD on my older MBA (mid-2011).
I also think the READ speeds could be faster, this person who has a 1TB SSD got super fast speeds: http://i.imgur.com/1lxvYk7.jpg while I am getting about 670-720MB/s.

Any ideas on what could be happening and why the write speed is well...so slow? And also don't know why I don't get ad many check marks as the other speed test from the 1TB SSD guy

Current speed test: http://i.imgur.com/xp3axqV.jpg

Thanks,
Mike


EDIT: SSD model is: APPLE SSD SD0128F (SanDisk I think...)
 
First, thats far from slow.

Second, those speeds are normal as higher capacity SSDs are faster.

Third, you wouldn't notice the speed difference and make use of it anyway, so enjoy.
 
greenglue said:
Hi!

I got my new rMBP 13" (2.4GHz i5, 128GB SSD, 4GB RAM)...
I also think the READ speeds could be faster, this person who has a 1TB SSD got super fast speeds: http://i.imgur.com/1lxvYk7.jpg while I am getting about 670-720MB/s.

Any ideas on what could be happening and why the write speed is well...so slow? And also don't know why I don't get ad many check marks as the other speed test from the 1TB SSD guy
Click to expand...

So, when you stop running benchmarks, how much longer does it take you to open safari?
 
greenglue said:
Hi!

I got my new rMBP 13" (2.4GHz i5, 128GB SSD, 4GB RAM) last Friday and have been running the BlackMagic Speed Test on my disk with a 5GB default file setting only to notice that the WRITE speed is the speed I used to get on a non-PCIe SSD on my older MBA (mid-2011).
I also think the READ speeds could be faster, this person who has a 1TB SSD got super fast speeds: http://i.imgur.com/1lxvYk7.jpg while I am getting about 670-720MB/s.

Any ideas on what could be happening and why the write speed is well...so slow? And also don't know why I don't get ad many check marks as the other speed test from the 1TB SSD guy

Current speed test: http://i.imgur.com/xp3axqV.jpg

Thanks,
Mike


EDIT: SSD model is: APPLE SSD SD0128F (SanDisk I think...)
Click to expand...

I guess that's that. Better return it to apple and spend your money on a brand new Dell XPS 15 with an SSD that only has writes speeds of about 400mb/s.

But then again you can upgrade the components!

I am not serious at all. ;)
 
A 256GB SSD module has more capacitors hence you will get able to get faster write speeds and a little increase in read, expect around 330 read/700 write with a 128GB.

Expect around 650 write and 730 read with 256GB. Hence higher capacities will also be a bit better, but in real performance, you won't notice a huge difference.
 
Lunfai said:
A 256GB SSD module has more capacitors hence you will get able to get faster write speeds and a little increase in read, expect around 330 read/700 write with a 128GB.

Expect around 650 write and 730 read with 256GB. Hence higher capacities will also be a bit better, but in real performance, you won't notice a huge difference.
Click to expand...

Uh... do you know what a capacitor is?
 
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