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kofman13

macrumors 6502a
Original poster
May 6, 2009
547
165
I was about to get base model 14 inch m2 pro macbook pro with 512gb. and i am reading now that the m2 pro 512GB ssd has slower read/write speeds than the 512GB did in the m1 Pro.
about "30% slower read/write speeds" according to some articles. would this be something i would really notice in real world usage? i do professional audio production but 95% of my samples/instruments run off of an external usb C samsung ssd
 

ArkSingularity

macrumors 6502a
Mar 5, 2022
928
1,130
But what about ram intensive tasks that require hard drive SWAP? i read that slower read write will make those tasks slow down?
If performance is your concern, you should definitely get more RAM rather than paying to upgrade the SSD solely for swap performance. Even the fastest SSDs are many orders of magnitude slower than RAM (access latency), so your best bet would be to have more RAM to reduce how often the system has to swap to begin with.

I don't think you'll have any issue though. The read/write speeds are around 4GB/sec or so even on the 512GB models, which is still quite fast.
 

mcnallym

macrumors 65816
Oct 28, 2008
1,210
938
But what about ram intensive tasks that require hard drive SWAP? i read that slower read write will make those tasks slow down?
If worried about swap why didn't you upgrade the Memory. Memory is still way, way faster then any of the fastest Apple SSD.

Outside of Youtubers screaming for hits or people that seem to buy based on how fast a benchmark is then people when running actual real world software have found that the M2 systems are faster then the previous M1 systems.

Also that you only notice the difference when running the clock as opposed to actually just working.

Especially if working off external SSD's anyway rather then the Internal.
 

ArkSingularity

macrumors 6502a
Mar 5, 2022
928
1,130
The issue I think you are referring to is with the base 256GB SSD which is not in the 14" or 16" MBPs.
It is on the M2 14" ones as well, just to a lesser extent. The 1TB+ ones use 4 NAND chips and are able to reach about 6.5GB/sec or so. The 512GB models use only 2 NAND chips and top out around 4GB/sec.

This does not apply to the M1 512GB models, only for the M2 models.
 

MacCheetah3

macrumors 68020
Nov 14, 2003
2,283
1,219
Central MN
The 1TB+ ones use 4 NAND chips and are able to reach about 6.5GB/sec or so. The 512GB models use only 2 NAND chips and top out around 4GB/sec.

This does not apply to the M1 512GB models, only for the M2 models.

M1 Mac mini:

AmorphousDiskMark_M1_AppleSSD_5pass-256MB.png
AmorphousDiskMark_M1_AppleSSD_9pass-1GB.png
AmorphousDiskMark_M1_AppleSSD_5pass-4GB.png
Blackmagic-Disk-Speed-Test_5pass-4GB.png

Oh dear! How can I dare go on?!
😉🤣
 
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