MacBook Pro Retina PCIe 1TB SSD

jps24

macrumors member
Original poster
Jul 16, 2012
32
0
Hey guys so I have been reading a lot about the SSD in the new MBPr and I heard the 15 model with 1TB SSD is getting 1Gbps speeds. If anyone has one can you verify this for me before I buy one? I also read that the 13in model with 1TB may or may not have 1Gbps speeds anyone with one that can check? The reason I ask is I want a 13in if they have the same speed but if the SSD in the 13in is slower I will get the 15in. Thanks guys !
 

raptor402

macrumors 6502
Jun 30, 2011
399
2
Hey guys so I have been reading a lot about the SSD in the new MBPr and I heard the 15 model with 1TB SSD is getting 1Gbps speeds. If anyone has one can you verify this for me before I buy one? I also read that the 13in model with 1TB may or may not have 1Gbps speeds anyone with one that can check? The reason I ask is I want a 13in if they have the same speed but if the SSD in the 13in is slower I will get the 15in. Thanks guys !
Hi, JPS

Well, both the laptops have the same SSD(s) and the same controller. Theoretically, you should get the same, or at least similar, speeds. However, while some people have been able to push it to 1GB/s, you will get average speeds of around 700MB/s. Furthermore, during normal use, you won't really notice any difference between this PCIe SSD and the older SATA III SSD(s). But if your use involves copying large files from one directory to another regularly, the performance on both laptops (13" and 15") will be more or less the same.

Regards
Raptor
 

jps24

macrumors member
Original poster
Jul 16, 2012
32
0
Thanks for the quick response the reason I ask is because I thought I heard the 15in was a four channel connection and the 13in and the airs was only a dual channel connection.
 

luffytubby

macrumors 6502a
Jan 22, 2008
684
0
Hi, JPS

Well, both the laptops have the same SSD(s) and the same controller. Theoretically, you should get the same, or at least similar, speeds. However, while some people have been able to push it to 1GB/s, you will get average speeds of around 700MB/s. Furthermore, during normal use, you won't really notice any difference between this PCIe SSD and the older SATA III SSD(s). But if your use involves copying large files from one directory to another regularly, the performance on both laptops (13" and 15") will be more or less the same.

Regards
Raptor
I dont understand this. Could you explain why in some benchmark the 1TB seems faster in reads/writes, when its the same controller?
 

raptor402

macrumors 6502
Jun 30, 2011
399
2
I dont understand this. Could you explain why in some benchmark the 1TB seems faster in reads/writes, when its the same controller?
Well, as far as I know, you get these speeds in sequential benchmarks, which work better on larger devices.

OP, all PCIe MacBook drives use a single PCIe lane. This has a theoretical maximum bandwidth of 985 MB/s. I may be mistaken, though. However, I'm quite sure that it's the same across all models.

Regards
Raptor
 

mac8867

macrumors 6502
Apr 5, 2010
457
22
Saint Augustine, FL
1 Gbps --- yes it does. Just ran an XBench on it:


System Info
Xbench Version 1.3
System Version 10.9.1 (13B3116)
Physical RAM 16384 MB
Model MacBookPro11,1
Drive Type APPLE SSD SM1024F
Disk Test 1057.92
Sequential 714.50
Uncached Write 1494.23 917.44 MB/sec [4K blocks]
Uncached Write 1040.44 588.68 MB/sec [256K blocks]
Uncached Read 304.22 89.03 MB/sec [4K blocks]
Uncached Read 1468.79 738.20 MB/sec [256K blocks]
Random 2036.96
Uncached Write 1622.07 171.72 MB/sec [4K blocks]
Uncached Write 1940.73 621.30 MB/sec [256K blocks]
Uncached Read 3563.10 25.25 MB/sec [4K blocks]
Uncached Read 1813.92 336.59 MB/sec [256K blocks]
 

macachia

macrumors regular
Sep 25, 2007
213
8
Thanks for the quick response the reason I ask is because I thought I heard the 15in was a four channel connection and the 13in and the airs was only a dual channel connection.
on the 15'' version, the 512gb sad uses a 2 channel connection, whereas the 1tb uses a 4 channel connection. Speeds are roughly 800mb/s & 1tb/s respectively
 

Lenortic577

macrumors member
Jun 29, 2007
38
27
Generally speaking larger capacity SSD's have higher performance numbers than the same model in a lower capacity. e.g. 256GB vs 1TB - the 1TB will have slightly higher numbers.

This is because the larger capacity SSD have more NAND chips, therefor slightly increased performance.
 

blackreplica

macrumors regular
Sep 28, 2010
105
48
Here's a bench from my 13 with 1TB SSD which should answer your question

Taken when laptop was new and less than 10% space used


I benched it again now that I'm using about 70% of the drive

 

whitedragon101

macrumors 65816
Sep 11, 2008
1,275
289
1 Gbps --- yes it does. Just ran an XBench on it:


System Info
Xbench Version 1.3
System Version 10.9.1 (13B3116)
Physical RAM 16384 MB
Model MacBookPro11,1
Drive Type APPLE SSD SM1024F
Disk Test 1057.92
Sequential 714.50
Uncached Write 1494.23 917.44 MB/sec [4K blocks]
Uncached Write 1040.44 588.68 MB/sec [256K blocks]
Uncached Read 304.22 89.03 MB/sec [4K blocks]
Uncached Read 1468.79 738.20 MB/sec [256K blocks]
Random 2036.96
Uncached Write 1622.07 171.72 MB/sec [4K blocks]
Uncached Write 1940.73 621.30 MB/sec [256K blocks]
Uncached Read 3563.10 25.25 MB/sec [4K blocks]
Uncached Read 1813.92 336.59 MB/sec [256K blocks]
Great numbers.

Now if they can concentrate on getting the random 4k read numbers into triple digits that would be awesome.
 

Holoshed

macrumors regular
Mar 24, 2011
126
0
North Carolina
I have a brand new late 2013 15" rMBP with literally everything maxed out. I ran xbench for the drive test and here was my result.

Results 945.29
System Info
Xbench Version 1.3
System Version 10.9 (13A3028)
Physical RAM 16384 MB
Model MacBookPro11,3
Drive Type APPLE SSD SM1024F
Disk Test 945.29
Sequential 642.81
Uncached Write 1402.31 861.00 MB/sec [4K blocks]
Uncached Write 934.26 528.61 MB/sec [256K blocks]
Uncached Read 290.12 84.90 MB/sec [4K blocks]
Uncached Read 1007.68 506.45 MB/sec [256K blocks]
Random 1785.47
Uncached Write 1660.41 175.77 MB/sec [4K blocks]
Uncached Write 1474.86 472.16 MB/sec [256K blocks]
Uncached Read 3522.07 24.96 MB/sec [4K blocks]
Uncached Read 1479.10 274.46 MB/sec [256K blocks]
 
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