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October 9, 2021 at 8:37 am #3937651
Very slow Macbook Pro Retina mid 2015
Lockedby trail71 · about 3 years, 1 month ago
I have a mid 2015 Macbook Pro retina – has suddenly become ultra slow! And I mean unusably slow.
Have done all the usual things – SMC and PRAM reset – reinstalled the OS
The Mac is even slow and laggy when in recovery mode so I’m guessing hardware?
Blackmagic read/write speeds are around 150-200mpbs – Memtest checks out fine as does Drive DX
Could this be a logic board issue?
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October 9, 2021 at 1:23 pm #3940647
First suggestion was going to be
by mrmacfixit · about 3 years, 1 month ago
In reply to Very slow Macbook Pro Retina mid 2015
a dying hard drive but I see that the mid 2015 MBP uses flash storage.
If those Black Magic results are real, then you have an extremely slow Flash drive there. Typical readings would be in MB/s
Flash storage has a limited life span and when they go, they tend to go fast.
While the processor could be at fault, it cannot be changed out. Replacing that mean replacing the enter logic board which will cost about as much as a new MBP. Flash Storage, on the other hand, can be replaced but Apple is very proud of it, which is reflected in the price.
You mentioned reinstalling the OS. with just the OS installed and no 3rd part stuff, was there any difference in the speed?
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October 9, 2021 at 1:41 pm #3940646
Slow what ever state it is in
by trail71 · about 3 years, 1 month ago
In reply to First suggestion was going to be
Hi there
Yes – a vanilla install is exactly the same – have also booted from a USB into a ubuntu live install and that is the same
Do you think that it could be the SSD even when running from in Recovery mode?
I’ve seen a used one on ebay for about 20 quid which might make it worth a punt
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October 9, 2021 at 2:11 pm #3940645
At ÂŁ20 it’s certainly worth a try
by mrmacfixit · about 3 years, 1 month ago
In reply to Slow what ever state it is in
ensure that it is exactly the same type as the one installed, there are a number of variations.
Just had another theory shot down. Removing RAM and rebooting but I see there are no RAM slots in that MBP.
Try the drive replacement, it’s a cheap enough attempt even if it fails.
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October 9, 2021 at 3:32 pm #3940644
If you do decide to get it repaired.
by rproffitt · about 3 years, 1 month ago
In reply to Very slow Macbook Pro Retina mid 2015
Look up Louis Rossmann. In fact you should call them and see what they think as some models should never be repaired.
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October 9, 2021 at 3:37 pm #3940643
Unfortunately the OP is not in the US
by mrmacfixit · about 3 years, 1 month ago
In reply to If you do decide to get it repaired.
The use of “Quid” would indicate UK.
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October 9, 2021 at 4:08 pm #3940642
Still would call.
by rproffitt · about 3 years, 1 month ago
In reply to Unfortunately the OP is not in the US
Louis knows folk around the world but still would ask if this model has known issues. At least they got 5 or more years out of it.
-> And yes, do try another drive as it’s cheap.
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October 9, 2021 at 9:15 pm #3940639
In the news. 2015 Macbook Pro.
by rproffitt · about 3 years, 1 month ago
In reply to Unfortunately the OP is not in the US
Not the problem you noted but we do know that many laptops clock down if there are hardware issues. Just this week someone discussed this issue with me. But hey, let’s hear what Louis says next:
[youtube]QCYgGuZZ34Y[/youtube]Takeaways: This failure is very rare. Also, Louis gets machines from all over the world.
-> Notice Ifixit calls out the battery as well as heatsink compound at https://www.ifixit.com/Answers/View/582349/Boot+problems,+slow+and+lagging+MacBook
There’s a lot of possible issues on Trail71’s laptop. So which would I attempt first? [b]The cheapest one.[/b]
This advice was given to me decades ago. It applies to just about any repair job where you’re not sure what part it is.
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October 19, 2021 at 7:04 pm #3939656
Final outcome
by trail71 · about 3 years ago
In reply to Very slow Macbook Pro Retina mid 2015
Hi all
So I’ve got my Macbook back from Apple – long story short, they say they tried a new NVME drive and it worked fine but at ÂŁ220 it’s not cost-effective to replace it in my eyes
I purchased a used original apple nvme from ebay and have just installed it – sadly the Macbook is exactly the same.
I know it could be that this drive is also faulty, but I find that too much of a coincidence.
My question is, as the Macbook is now going to sell for spares, is there an adapter that lets me convert the Apple NVME drive to a more convention connector? I can at least change the drive into a portable disk at the very least.
Thanks
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October 19, 2021 at 7:26 pm #3939652
Let’s find out?
by rproffitt · about 3 years ago
In reply to Final outcome
I did the usual Google and find this:
https://appleinsider.com/articles/20/08/23/how-to-use-an-nvme-drive-to-upgrade-your-macs-ssdI see the adapter for 17USD at https://www.amazon.com/Sintech-Adapter-Upgrade-2013-2015-MacBook/dp/B01CWWAENG
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October 19, 2021 at 7:32 pm #3939651
Not quite what I want
by trail71 · about 3 years ago
In reply to Let’s find out?
That’s not what I’m after
I want to be able to covert it the other way around – make the apple nvme connector fit into a standard drive enclosure
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October 19, 2021 at 8:10 pm #3939649
Sorry but what size is that drive?
by rproffitt · about 3 years ago
In reply to Not quite what I want
There are NGFF drive cases. Example:
And NGFF to SATA adapters.
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October 19, 2021 at 11:42 pm #3939644
Disregard this
by mrmacfixit · about 3 years ago
In reply to Not quite what I want
I deleted this earlier.
Basically the same post as Bob’s but before I noticed the two pages of this thread.P
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October 19, 2021 at 11:57 pm #3939643
Sorry but I was unclear as to my size question.
by rproffitt · about 3 years ago
In reply to Disregard this
My referral was about the storage capacity since Apple did have some 120 or 128GB NGFF drives in some models. For many that’s just not worth salvaging into an external case.
Example: 21 USD gets me a very small in physical dimensions 128GB USB 3.1 flash drive.
Link: https://smile.amazon.com/Samsung-MUF-128AB-AM-Plus-128GB/dp/B07D7PDLXC/
That’s about the cost for a generic NGFF case. -
October 29, 2021 at 4:00 pm #3939530
Randomly fixed
by trail71 · about 3 years ago
In reply to Sorry but I was unclear as to my size question.
So I turned the Macbook on just as a last attempt – and it is now working completely fine :S
Thanks for everyone’s help – although I don’t know why it seems to have a melt down every so often
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