M.2 vs 2.5 Inch SSD

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Johnseph

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Aug 1, 2016
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I'm considering buying an auxiliary drive for my new Lenovo P50. I ordered the base SSD, a 256GB one that was supposed to be 2.5 inch, but they put an M.2 drive in.

However, this leaves open the possibility of putting another M2 in, or a 2.5" drive. I'm just torn on which to do.

What are the benefits and drawbacks of each? Power consumption, durability, longevity, etc? Also, can I put an M.2 in bigger than the 256GB my P50 came with? My storage kit is coming, and I wanna install as soon as it arrives. Will either be obsolete before the other? Both are SATA-I'm not gonna spend 300 on NVMe.
 
Solution
geofelt
M.2 will be smaller and lighter. A good thing for a portable laptop.
Past that, the conventional m.2(not x4 NVME) and 2.5" are comparable in performance.
I do not think any power differences are of importance.
I think you will find that a quality m.2 drive like Samsung will be a bit more expensive than 2.5". And, M.2 will not come in very large capacities compared to 2.5"
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geofelt

geofelt

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Oct 9, 2006
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M.2 will be smaller and lighter. A good thing for a portable laptop.
Past that, the conventional m.2(not x4 NVME) and 2.5" are comparable in performance.
I do not think any power differences are of importance.
I think you will find that a quality m.2 drive like Samsung will be a bit more expensive than 2.5". And, M.2 will not come in very large capacities compared to 2.5"
 
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Solution
Flying-Q

Flying-Q

Distinguished
Feb 20, 2006
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Tom's has done many reviews now of M2 drives and have noted power usage and heat issues when they are mounted in the cramped airless confines of laptop enclosures. The consequences seen usually include throttling leading to lower performance compared with the same brand 2.5" drive, though this is only under heavy use. It depends upon how hard you are going to use your drive as to whether you encounter this behaviour. Given the situation you are in, I would choose the 2.5" format.
 
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