We took note of the drive’s temperature during some of our benchmarking runs.
Crucial's P310 2280 drive doesn't come with a heatsink (versions fitted with a heatsink aren't too far away) but it performs well enough without one. The hottest the drive got was during a CrystalDiskMark 8 test run (Sequential QD1 – 32 T1 Write) which is a hard-hitting test when it reached 61° C. It averaged 44° for the non-4K-based tests.
For the 4K-based tests, the drive averaged 41.5° C.