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Mid-2012 15" MBP: SATA II SSD Quesiton

Reg88

Reg88

macrumors regular
Original poster
Jun 8, 2010
107
3
Hi,
I've read that my MPB won't take full advantage of SSD b/c of the SATA II limitations.

That being said, is there any advantage of getting the Samsung 850 PRO vs. the 850 EVO? It's my limited understanding that the PRO advantage is the reliability, and not so much the speed difference.

Thank you!
 
If you have a mid-2012 non-Retina MBP, it will run SATA3 on both ports, provided there are no cable issues (sometimes the cable will need to be replaced). Your assumption about the Evo vs. Pro is the correct one. I think the Pro has a 10-year warranty vs. 5 for the Evo.
 
The machine has SATA III and can take full advantage of all SATA SSDs.

In addition to the increased durability and warranty of the 850 Pro over the EVO, the Pro also is able to sustain greater performance by a factor of up to 3 under extremely intensive workloads.
For most people, the EVO is quite sufficient.
 
Awesome - thank you everyone!!
Now the question is whether or not to pull out the optical drive and run an SSD-RAID stripe
(just kidding)
[doublepost=1461804383][/doublepost]Actually I do have one more question -- do I need to do anything special re: TRIM? Or does El Capitan handle that for me.
This would be my first SSD.
Thanks!
 
Re Trim, in Terminal, use the command, "sudo trimforce enable" and then follow the directions. It's pretty simple.
 
MacInTO said:
Re Trim, in Terminal, use the command, "sudo trimforce enable" and then follow the directions. It's pretty simple.
Click to expand...

Thank you!
1) Is running Trim necessary? I've read back and forth about yes and no, etc.

2) I've also read here that you want Trim on before you clone the original HDD to the SSD (or risk heavy wear on the SSD early on). How do you turn on Trim before the SSD is even connected?

Do I:
a) connect the SSD via USB, etc.
b) enable Trim in terminal
b) clone the HDD to the SSD with CCC?

Thank you again!!
 
I think trim is necessary. Here is an article about trim,

http://www.buildcomputers.net/trim-support.html

I try to enable trim as soon as possible after installing in my Mac. I'm not sure it's possible to do it before loading the OS, but you can run terminal after you format the drive. I've never run one from USB so I'm not sure about that. I also never clone drives. I load everything from scratch.
 
MacInTO said:
I think trim is necessary. Here is an article about trim,

http://www.buildcomputers.net/trim-support.html

I try to enable trim as soon as possible after installing in my Mac. I'm not sure it's possible to do it before loading the OS, but you can run terminal after you format the drive. I've never run one from USB so I'm not sure about that. I also never clone drives. I load everything from scratch.
Click to expand...

Ok I'll check that out! Thanks.

Also, can you point me to a reference to where I can simply put OS X on the SSD so I can boot in to OSX and then add all of my apps, etc.? Thank you!
 
Reg88 said:
Ok I'll check that out! Thanks.

Also, can you point me to a reference to where I can simply put OS X on the SSD so I can boot in to OSX and then add all of my apps, etc.? Thank you!
Click to expand...
If you have the SSD in an enclosure, you can download El Capitan or whatever OS and then load it onto the target drive. You can also load it onto a USB memory stick and load it from there if you have installed the new drive in your Mac.

https://support.apple.com/en-ca/HT201372
 
JTToft said:
- It's better than not running it and it has no disadvantages.


- TRIM doesn't function over USB, so you couldn't do exactly this.
Click to expand...

So would it be best to install the Unformatted SSD, put the old HDD into an external enclosure and then boot up from the externaL?

I'm still confused about enabling TRIM on an Unformatted internal SSD. Seems a shame to waste a write cycle to install OSX just to enable TRIM and then completely write over the drive.

Does TRIM require a complete install of OSX on the drive in order to work? Or does it only need to be formatted?
 
Mac 128 said:
So would it be best to install the Unformatted SSD, put the old HDD into an external enclosure and then boot up from the externaL?

I'm still confused about enabling TRIM on an Unformatted internal SSD. Seems a shame to waste a write cycle to install OSX just to enable TRIM and then completely write over the drive.

Does TRIM require a complete install of OSX on the drive in order to work? Or does it only need to be formatted?
Click to expand...
When I get new drives, I install the unformatted one and then boot from a USB stick with the OS loaded and install from that.

You can turn on TRIM at any time on an installed drive formatted and with the OS loaded.
 
MacInTO said:
When I get new drives, I install the unformatted one and then boot from a USB stick with the OS loaded and install from that.

You can turn on TRIM at any time on an installed drive formatted and with the OS loaded.
Click to expand...

Thanks. That's more or less how I would do it. I was just trying to get to the bottom of the recommendation to turn on TRIM before copying over your original files.

So it sounds like the only way to do it, is to waste a write cycle installing MacOS, then copying over the original drive -- I use CCC.
 
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