SSD speeds on mid 2014 rmbp?


Rbk23

macrumors regular
Jul 8, 2014
120
8
Generally, the larger the faster.

The 256 is around 700 MB/S and the 1TB is close to 1000
 

yjchua95

macrumors 604
Apr 23, 2011
6,725
230
GVA, KUL, MEL (current), ZQN
Any differences between the 256GB, 512GB, 1TB versions?
All speeds in MB/s, written as read/write:

256GB:
SanDisk SD0256DF - 700/550
Samsung SM0256F - 720/670
256GB is a lottery between these two brands.

512GB Samsung SM0512F - 750/720
1TB Samsung SM1024F - 1031/990

512GB and 1TB are Samsung-only.

1TB is the fastest, because it uses a 4-lane PCIe channel. All other capacities only use a 2-lane PCIe channel.
 

joecool99

Suspended
Aug 20, 2008
726
65
USA
All speeds in MB/s, written as read/write:

256GB:
SanDisk SD0256DF - 700/550
Samsung SM0256F - 720/670
256GB is a lottery between these two brands.

512GB Samsung SM0512F - 750/720
1TB Samsung SM1024F - 1031/990

512GB and 1TB are Samsung-only.

1TB is the fastest, because it uses a 4-lane PCIe channel. All other capacities only use a 2-lane PCIe channel.
Awesome, 1TB a sec - very impressive. Where did you get this info, any video speed test to show it in action.
 

kfmfe04

macrumors member
Original poster
Jun 19, 2010
69
1
All speeds in MB/s, written as read/write:

256GB:
SanDisk SD0256DF - 700/550
Samsung SM0256F - 720/670
256GB is a lottery between these two brands.

512GB Samsung SM0512F - 750/720
1TB Samsung SM1024F - 1031/990

512GB and 1TB are Samsung-only.

1TB is the fastest, because it uses a 4-lane PCIe channel. All other capacities only use a 2-lane PCIe channel.
ty for the info - as Apple charges quite a lot for the 1TB upgrade, I think I may go for the 256GB and upgrade to a 4-lane 1TB 2-3 years down the line.

Maybe by then, >1TB PCIe will be available (at a reasonable price).
 

yjchua95

macrumors 604
Apr 23, 2011
6,725
230
GVA, KUL, MEL (current), ZQN
ty for the info - as Apple charges quite a lot for the 1TB upgrade, I think I may go for the 256GB and upgrade to a 4-lane 1TB 2-3 years down the line.

Maybe by then, >1TB PCIe will be available (at a reasonable price).
How about a 512GB?

I have a 512GB in my late-2013 27" iMac and have not noticed any difference with the 1TB in my late-2013 15" rMBP.
 

Jeff Flowerday

macrumors regular
Aug 23, 2007
240
44
Calgary, AB
ty for the info - as Apple charges quite a lot for the 1TB upgrade, I think I may go for the 256GB and upgrade to a 4-lane 1TB 2-3 years down the line.

Maybe by then, >1TB PCIe will be available (at a reasonable price).
Someone would have to make an SSD that worked in the new rMBP. Currently there is no upgrade path, you should buy what you will need for as long as you plan on owning the computer.
 

kfmfe04

macrumors member
Original poster
Jun 19, 2010
69
1
Someone would have to make an SSD that worked in the new rMBP. Currently there is no upgrade path, you should buy what you will need for as long as you plan on owning the computer.
I agree that there is a small probability that for the next five years no one will manufacture a PCIe SSD upgrade which will be compatible with the rmbp, but I'm willing to make the bet that they will come out, and prices per capacity will continue to fall.

In fact, I think it is more than likely that within the next five years, we'll see >1TB PCIe SSDs in a form factor that will fit inside a rmbp.

What if I'm wrong? Then I will have to live with 256GB and stream the rest of ac WIFI or buy an external SSD and go through USB3 or perhaps FW. No biggie.

The alternative is to pay an extra $300/$800 + tax now for a 500GB or 1TB upgrade. Note that $800 is almost the price of a mba!

Others may follow your suggestion, but I think I will bet on having the option to upgrade more cheaply in the future, as I have no immediate needs for that much capacity - it's a luxury, not a necessity (right now) for me.
 

benz1ne

macrumors newbie
May 5, 2015
1
0
Dramatic Drop in Write Speed!

I've just got my Retina 2014 15" with 1TB... I ran the Blackmagic Speed Test before I migrated my data from my old machine and it was fine, Write Speed in excess of 1,000MB/s but now (with 400GB in use) it's dropped and seems capped at 465-480 - It's not going any faster but the Read Speed seems fine....

Has anyone experienced this? Or know what the cause could be?

Thanks.
 

Samuelsan2001

macrumors 604
Oct 24, 2013
7,682
2,103
Not giving TRIM

I've just got my Retina 2014 15" with 1TB... I ran the Blackmagic Speed Test before I migrated my data from my old machine and it was fine, Write Speed in excess of 1,000MB/s but now (with 400GB in use) it's dropped and seems capped at 465-480 - It's not going any faster but the Read Speed seems fine....

Has anyone experienced this? Or know what the cause could be?

Thanks.
a chance to clean things up. Leave it for a few hours on overnight and check in the morning...
 

stylinexpat

macrumors 68000
Mar 6, 2009
1,587
2,462
All speeds in MB/s, written as read/write:

256GB:
SanDisk SD0256DF - 700/550
Samsung SM0256F - 720/670
256GB is a lottery between these two brands.

512GB Samsung SM0512F - 750/720
1TB Samsung SM1024F - 1031/990

512GB and 1TB are Samsung-only.

1TB is the fastest, because it uses a 4-lane PCIe channel. All other capacities only use a 2-lane PCIe channel.
I am thinking of upgrading my SM0512F to the new 960 from Samsung. Anyone here done this?
 

stylinexpat

macrumors 68000
Mar 6, 2009
1,587
2,462
All speeds in MB/s, written as read/write:

256GB:
SanDisk SD0256DF - 700/550
Samsung SM0256F - 720/670
256GB is a lottery between these two brands.

512GB Samsung SM0512F - 750/720
1TB Samsung SM1024F - 1031/990

512GB and 1TB are Samsung-only.

1TB is the fastest, because it uses a 4-lane PCIe channel. All other capacities only use a 2-lane PCIe channel.
Was just looking back at my old 2014 MacBook Pro specs to see the performance gains I will see on the new 2018 15” MBP. Looks like 3-4 times the performance speeds from read/write and roughly 3 times from multi core on 8th gen i7 processor. Will also have double the RAM. New MBP looks like it will be beast Compared to my old MBP
 

goslowjoe

Suspended
Dec 22, 2017
125
88
I purchased a pre-owned 2015 15" MacBook Pro for my son and was just totally impressed how much faster it is compared to the 2014 model (SSUAX SSD). It someone feels just miles better than mine in every way.

I took the plunge and ordered a SSUBX I am looking forward to my upgrade. A new 500GB SSUBX will replace the 500GB SSUAX in my 2014 MacBook Pro. I have a clearly mapped upgrade path in mind here to benefit more than one unit with one purchase - the SSUBX goes in my MacBook Pro, the SSUAX from the MacBook Pro goes into the Significant Other's 2014 Mac Mini, replacing the 256GB SSD in the Mac Mini, the 256GB SSD goes into an external bracket for backups and general use. The 256GB SSD replaces a 500GB Crucial SATA SSD used for backups that will now go into her 2012 non-Retina MacBook Pro, replacing the 250GB Crucial SSD that is in there at the moment. The latter goes into a bracket for backups and general storage. Everyone benefits. SO is happy. Life is good.

Will post speed test results showing the 2014 SSUAX vs SSUBX differences.
 

Earl Urley

macrumors 6502
Nov 10, 2014
400
157
The 15-inch Mid-2015 Retina MacBook Pro supports PCIe 3.0x4 while the mid-2014 supports PCIe 2.0x4, not surprising about how it feels (2015 vs. 2014) as many reviewers at the time said they were impressed at the speed increase between the two.
 

goslowjoe

Suspended
Dec 22, 2017
125
88
OK, my previous post refers. I got the SSUBX today. Time Machine's restore to the new flash storage did not work (maybe a mistake I made in my haste to get it going) but Carbon Copy Cloner came to the rescue. The difference in the write and read speeds is what others have claimed - more than double: 700/721 MB/s (for the SSUAX) and 1340/1483 MB/s (for the SSUBX). While the link speed remains 5GT/s due to the fact that this is PCIe 2.0 architecture whereas the 2015 MacBook Pro has PCIe 3.0 and 8GT/s, on the 2014 with the SSUBX the link width now changes from the stock flash storage's x2 to the faster SSUBX's x4. I am super chuffed. The attached screenshots show the difference, before and after the upgrade.
 

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