MacBook Pro + Samsung Evo 840 SSD = Slow read/write speeds?

[Jholder112233]

Hi everyone,

Just looking for some advice. I installed a 256GB Samsung Evo 840 SSD in my 2010 MacBook Pro yesterday and did a clean install of OS X Mavericks.

I've just done a read/write test using the Blackmagic disk utility and I've realised my speeds are much slower than expected.

Read tops out at around 260MB/s and write at around 255MB/S.

Any tips on what I can try to up them? I've enabled trim.

 

[berker]

Nope the SSD speed on your device is correct. Since you are using SATA 3 Gbps connection there is a speed off.

If you would have SATA 6 Gbps bus then you would have full speed that the SSD offers.

 

[yjchua95]

Hi everyone,

Just looking for some advice. I installed a 256GB Samsung Evo 840 SSD in my 2010 MacBook Pro yesterday and did a clean install of OS X Mavericks.

I've just done a read/write test using the Blackmagic disk utility and I've realised my speeds are much slower than expected.

Read tops out at around 260MB/s and write at around 255MB/S.

Any tips on what I can try to up them? I've enabled trim.

Image

No you can't. Your MBP has a SATA2 3Gb/s connection, so you can only get around 250-300MB/s.

 

[bobcan]

You have effectively made an older, slower, computer 'faster' I should hope, but not nearly at speeds the new component could be used at..

 

[Marty62]

That's SATA II speeds BUT you have increased your data transfer speeds
by at least 3 X what a normal HDD can do !!

Still was a great move so be happy 🙂

M.

 

[maxwell5050]

Never used an Evo but I had a single 840 Pro 512 in my Mac Mini and would average about 400 MB/s.

I recently got a second drive and put them in a RAID 0 (after some serious resistance from Mavericks).

Now this is what I'm getting......