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Which SSD do I will buy for a hard drive remplacement?

Hello everyone,

I have a little problem about a iFixit's product description.

Indeed, the description of the upgrade kit 256 GB SSD for Unibody Macbook Pro mid-2012 saying that the SSD is "a Super fast, SanDisk's top of the line X300 256 GB SSD.", so a X300, but in a post note if you want to only buy the drive, the SSD model is "Sandisk X400 Model #: SD8SB8U-256G-1122", and the item model number correspond to a X400 sandisk.

Also, in the first photo, the SSD is a X300 but in the second and third photo its a X400. Which SSD do I'll buy and which one will working on my Macbook pro Mid-2012 ?

Thanks, Hugo.

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SSD Drives are still relatively new and they still have life-span issues. I would recommend just getting a faster regular Hard disk drive. But that is just a recommendation.

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@hugobeldame I do not see that the OP intended to solicit an opinion from anyone on which SSD is preferred (which in itself is most likely personal preference). It appears as if the question is related to a discrepancy found it the description (x300 vs. X400) of the SSD the OP is interested in. The only ones that could answer this question is the ifixit staff. For that you want to contact them on here.

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Well the iFixit staff seems to be on spring break.

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Hence the email address. I bet they are reading that while on the beach in Cabo :-)

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The non Retina models use SATA and are proprietary. What Apple and OWC offers is going to be your only source that's viable. There are others but these are usually in China or require a minimum order of more then one.

For the non Retina Macs, they use SATA. For consumer drives I like Samsung, Intel and SanDisk.

The one brand I do not know about on the consumer end is Kingston. I hear mixed things, and have not tested them so I can't validate the truth to these claims. However, I do know their business SSD's use Phison SATA controllers. Consumer drives are not known. It looks like some of them even use LSI controllers.

Also, it's better if you outright avoid SSD's you do not know the model for like KingSpec. Those are very much hit or miss.

I also have another favorite but it's a server grade SSD; this is going to be Phison. The advantage of Phison is it's server class but the downside is you're going to pay a lot more for it then you would pay for a "consumer grade" SSD. You have to figure out if the extra cost is worth it for you.

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@nick I really think we need some kind of review page on these drives as they are becoming more affordable and more in demand. I disagree vehemently with your recommendation of the 850 EVO. 50% of the ones I'm seen have failed.

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They seem reliable for what they are. Yes, they are cheaper and will almost certainly have a higher failure rate then the PRO variant because of the binning process but you would think that would be negligible. I've had bad luck with a M500 in a personal system corrupting a system file preventing it from booting. The PRO isn't bad, but it's higher price never made economic sense to me.

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@nick - how would we go about discussing the pros and cons of these various drives and get input on personal experiences? Some kind of guide to SSD drives?

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One option could be that we make a thread here on Meta, but the problem is unless someone doesn't chime in for 30 days the post owner would have to add some fluff to the post just so someone could add another SSD to the post just so someone can add new SSD's. If my rMBP threads are still active, we might be able to do it. Those are over 30 days old, so they would have went no answers a long time ago, seeing as it was criticism to the machine from the repair perspective rather then a question. I have some theories on why it crashed, but I have not tested them (it crashed in a machine I can't have that happen again!) but maybe my theories will help someone. I did read online that TRIM support for Linux is terrible for the M500 (crashed in Windows, but it has problems because of bad TRIM support in some of the Linux kernels apparently. I'm thinking it could extend to Windows 7 when you enable TRIM too, and that potentially crashed it.) I also think it could have just been a one-off corruption, which is more likely. I also didn't think to delete the Dell recovery partition to recover it at first, but eventually wiping all of the partitions did it. I'm leaning more towards corruption or the Dell recovery partition crashing and not getting wiped, since Dell's tool only deletes the data partition.

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@Mayer - We use Samsung 850 EVO's (100's) in MacBooks Pro's. I can tell you we have only had 1 failure! I suspect you maybe facing 'Smallitis' when someone buys too small a SSD (loads it up with stuff with very little free space). So they overwear a section of the SSD which will kill it much sooner than it should. This is were I stress the 1/4 to 1/3 (on smaller units) free space point over and over again. It does make a big difference no matter who's drive you use.

Other systems have their own set of issues and you're right! OS issues (Linux & Windows) compound things as well.

FYI: The EVO & the Pro are very different SSD designs, it's not a bin issue which is marked as a Pro unit.

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Beldame Hugo will be eternally grateful.