3rd Party SSD read/write speeds ok?

[Emiljabo]

Hi all,

I upgraded the fusion drive of my late-2014 iMac with a 2TB 3rd party SSD at a local Mac repair place.

My Mac seemed really sluggish lately, so I did a disk speed test and the results were really slow, like 160mbps range. I checked and noticed TRIM was not enabled on the drive, I enabled it and the speeds increased somewhat. I'm not very tech-savvy with SSDs, but what do you make of the following speeds? Are they any good or should I be getting faster?



Cheers!

 

[Emiljabo]

It fluctuates, sometimes it still seems quite slow:

 

[Bigwaff]

My Mac seemed really sluggish lately, so I did a disk speed test and the results were really slow, like 160mbps range.

First, what is the exact model identifier of your 2014 iMac? Does it have a 21.5" or 27" display? Second, find out exactly what brand, model, and storage capacity SSD the repair place used. If the SSD is SATA, the SSD should be a 6Gbps SATA SSD. If your iMac had a Fusion Drive, then the repair place should have used a NVME PCIe SSD. Lots of questions before any answers can be given.

 

[Emiljabo]

Hi Bigwaff,

Until I hear back from the repair place on the SSD specs., here are my iMac specs:

Apple iMac "Core i7" 4.0 27" (5K, Late 2014)
Retina 5K, Late 2014 - BTO/CTO - iMac15,1 - A1419 - 2806

It did have a Fusion Drive.

It is this model here.

 

[Fishrrman]

Those speeds aren't so good at all.

You could have done better by buying an EXTERNAL USB3 SSD, plugging it in, and making it the "new boot drive". Doing this would give you read speeds up in the 410-430MBps range.

 

[chown33]

Run "System Information" in Applications/Utilities, and see what it says about any NVMExpress or SATA drives.