New 256GB Mac Mini and 512GB MacBook Pro Have Slower SSD Speeds Than Previous Models

While the new Mac mini with the M2 chip has a lower $599 starting price, the base model with 256GB of storage has slower SSD read and write speeds compared to the previous-generation model with the M1 chip and 256GB of storage.

Mac mini M2 2023
A teardown of the new Mac mini shared by YouTube channel Brandon Geekabit reveals that the 256GB model is equipped with only a single 256GB storage chip, while the same configuration with the M1 chip has two 128GB chips. This difference explains why the new model has a slower SSD, as multiple NAND chips allow for faster speeds.

We have confirmed with the Blackmagic Disk Speed Test benchmarking app that SSD read and write speeds for the new 256GB Mac mini are each around 1,500 MB/s, which is anywhere from 30% to 50% slower than read and write speeds for the equivalent previous-generation model, although benchmark results and real-world performance can vary.


Customers who are looking for the fastest SSD speeds should ensure they configure their M2 Mac mini with at least 512GB of storage to avoid this issue. A slower SSD can impact file transfer speeds, and overall performance can also take a slight hit since Macs temporarily use SSD space as virtual memory when physical RAM is fully used.

As for the higher-end Mac mini with the M2 Pro chip, the base model with 512GB of storage appears to have two fewer NAND chips than the Intel-based model it replaced, according to a teardown shared by MacStadium's Brian Stucki.

13-inch MacBook Pro and MacBook Air models with the M2 chip and 256GB of storage also have slower SSD speeds due to a single NAND chip, and evidently Apple has not decided to change course with the new Mac mini.

In a statement shared with The Verge last year, Apple claimed that M2-based Macs have "even faster" performance for real-world activities, but it's unclear if the statement was referring to SSD performance or overall system performance:

Thanks to the performance increases of M2, the new MacBook Air and the 13-inch MacBook Pro are incredibly fast, even compared to Mac laptops with the powerful M1 chip. These new systems use a new higher density NAND that delivers 256GB storage using a single chip. While benchmarks of the 256GB SSD may show a difference compared to the previous generation, the performance of these M2 based systems for real world activities are even faster.

We have reached out to an Apple spokesperson for additional comment on the matter and will update this story if we hear back.

Update: As noted by 9to5Mac, the new MacBook Pro also has slower SSD speeds when configured with 512GB of storage due to a reduction in NAND chips.

Related Roundup: Mac mini
Buyer's Guide: Mac Mini (Neutral)
Related Forum: Mac mini

Popular Stories

Home Hub Command Center with Dome Base Feature

Apple Working on All-New Operating System

Thursday September 25, 2025 1:11 pm PDT by
Apple is developing an all-new operating system codenamed "Charismatic," according to Bloomberg's Mark Gurman. Apple smart home hub concept based on rumors This is likely Apple's long-rumored "homeOS" operating system. In a report last month, Gurman said both Apple's rumored smart home hub in 2026 and tabletop robot in 2027 will run the new operating system. He said the software platform ...
iOS 26 Battery Glass Feature

iPhone 16 Pro Max 80% Charge Limit: One Year Later, Was It Worth It?

Wednesday September 24, 2025 3:58 pm PDT by
With the iPhone 15 series, I did an experiment and kept my iPhone's Charge Limit set at 80 percent for an entire year. It provided an interesting look at the impact of charge limits on battery longevity, so I decided to repeat it for the iPhone 16 line. Since September 2024, my iPhone 16 Pro Max has been limited to an 80 percent charge, with no cheating. As of today, my battery's maximum...
iOS 26

Apple Continues to Prepare iOS 26.0.1 With Multiple Bug Fixes Expected

Sunday September 28, 2025 1:30 pm PDT by
Apple is preparing to release iOS 26.0.1, according to a private account on X with a proven track record of sharing information about future iOS versions. The account initially said iOS 26.0.1 would have a build number of 23A350, but they now expect the update to have a build number of 23A355. This suggests that the software update will include more bug fixes or changes than initially...
Apple MacBook Pro M4 hero

New MacBook Pro Nears Mass Production, But Four Bigger Upgrades Expected Next Year

Sunday September 28, 2025 2:08 pm PDT by
Apple's next MacBook Pro models will enter mass production soon, according to the latest information shared by Bloomberg's Mark Gurman. In his Power On newsletter today, Gurman said he continues to believe the new MacBook Pro models will be released at some point between late 2025 and the first quarter of 2026, meaning they should be available to order by March at the latest. Apple often...
AirPods Pro 3 Newsroom

Apple's 'Back to School' Offer Ends Soon, Now Applies to AirPods Pro 3

Wednesday September 24, 2025 7:20 am PDT by
Apple's annual "Back to School" promotion for students ends soon, so act fast if you want to score free AirPods with the purchase of an eligible new Mac or iPad. Until Tuesday, September 30, college students and qualifying educational staff in the U.S. can receive free AirPods 4 with Active Noise Cancellation when they purchase an eligible new Mac or iPad from Apple. This is a $179 value. ...
iPhone 17 Pro Colors

Skipped the iPhone 17 Pro? Here's What is Rumored for iPhone 18 Pro

Tuesday September 23, 2025 8:55 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are still a year away, there are already a few rumors about the devices that offer an early look ahead. Below, we have recapped some of the early iPhone 18 Pro rumors so far. This story was published previously, and it has been updated to reflect the latest rumors. Many early rumors prove to be true, but nothing is confirmed yet, and Apple's...
iphone 17 ceramic shield

Regular iPhone 17's USB-C Charging Speeds Tested With Apple Chargers

Friday September 26, 2025 9:01 am PDT by
The website ChargerLAB has tested the standard iPhone 17 model's USB-C charging speeds with a variety of Apple's chargers, from 18W to 140W. The device reached a peak charging speed of around 27W to 28W with these Apple chargers:29W USB-C Power Adapter 30W USB-C Power Adapter 35W Dual USB-C Port Power Adapter 35W Dual USB-C Port Compact Power Adapter 40W Dynamic Power Adapter with 60W Max...
Apple More Personal Siri Ad

Apple Responds to U.S. Class Action Lawsuit Over Delayed Siri Features

Friday September 26, 2025 6:57 am PDT by
In March, Apple delayed the launch of its personalized Siri features, and soon after the company was hit with multiple class action lawsuits over the situation. The plaintiffs said they never would have purchased an iPhone 16, or would have paid less, had they known Apple's marketing about the Siri features was false. In the U.S., all of the complaints were consolidated into one class...
maxresdefault

Review: A Week With the iPhone 17 Pro

Friday September 26, 2025 12:51 pm PDT by
Apple's iPhone 17 models have been out for a week now, so we thought we'd do a longer-term review of the flagship iPhone 17 Pro and Pro Max now that we've been able to spend more time with them. Subscribe to the MacRumors YouTube channel for more videos. MacRumors videographer Dan Barbera has a Silver iPhone 17 Pro and a Cosmic Orange iPhone 17 Pro Max, and despite a lot of concern over...

Top Rated Comments

techno-Zen Avatar
35 months ago
Rene Ritchie rebuttal in 3, 2, 1 about how it doesn't matter.
Score: 61 Votes (Like | Disagree)
dantracht Avatar
35 months ago
Same as the air. Excuse me while I go praise my base M1.
Score: 59 Votes (Like | Disagree)
oofio2461 Avatar
35 months ago
Apple should outright say the SSD speed on Macs, this is so anti-consumer. At least say that the base Macs come with slower speeds, and the more expensive versions come with a fast SSD.
Score: 59 Votes (Like | Disagree)
GizmoDVD Avatar
35 months ago
Gonna get my popcorn out for this one!
Score: 55 Votes (Like | Disagree)
k1121j Avatar
35 months ago
It’s so weird to have specs go in reverse. One would think Apple would not do that.
Score: 45 Votes (Like | Disagree)
Turribeach Avatar
35 months ago
Disgusting really but totally expected. No newer machine should have lower specs than an older machine. It shoiuld be the same or better.
Score: 43 Votes (Like | Disagree)