Probably because some of them are terribly designed, e.g. almost every lower-end ASRock board has what are little more than aluminum slabs, with few or any cuts, making them more heattraps than heatsinks due to almost no additional surface area. I guess it also comes down to the quality of the included thermal pad and how much case airflow there is, but in general most factory sinks are ok and not really any worse than leaving the drive bare. I think this mattered a bit more back before mfgs started including those integrated heatspreader-like labels that have foil in them to help greatly increase heat dissipation with even the slightest bit of airflow pointed at them.I use them.
Why would they do more bad than good?
This has been tested, as long as your flash basically isn't actively chilled (far below ambient) it won't make a difference.Yes I use the heatsinks on my x570 board.
Ironically, the flash memory actually prefers higher temperatures. The main reason for using a heatsink is the SSD controller, which is basically like any other processor in that it generates heat and will throttle if it gets too hot. If using a heatsink means the difference between your SSD controller throttling or not, then that would make it more than worth it.
So you want to make sure that the heatsink is pulling heat from the SSD controller, but it's actually counter-productive to cool the flash modules. Usually you don't have that much granular control over what the heatsink cools, but it might be a consideration regarding where you put the thermal pads. If your SSD controller is staying cool even without a heatsink, then you might consider leaving the heatsink off and allowing the flash to run at hotter temperatures (again, the flash itself prefers higher temperatures).
Ok, so the reason I asked this is because my daughters SSD has failed after two years. She brought it to me earlier today (she lives in a different state) and I am replacing it and fixing her computer. Her board is an Rog Maximus XI, and I used the heatsink supplied with the motherboard on the drive. When I removed the heatsink, the thermal pad was kind of gooey, and I wonder if this is what caused the drive to fail.
I've got a question, since the thread is somewhat active:Yes. I always have. I do it on all the boards I review as well.
Temperature Sensor 1: 64 Celsius Temperature Sensor 2: 79 Celsius
Temperature Sensor 1: 48 Celsius Temperature Sensor 2: 53 Celsius
Right, I get you. I know my 2nd slot is running warm. No doubt about it, its one of the downsides to that particular model. Are the heatsinks actually worth a damn, or would I be better served with a directed airflow option ?85C is pretty damn hot for an nvme drive, my PCIE Gen 4 SSDs directly under the exhaust of my super hot 1080Ti don't get that hot. They max out, in summer, around 62C.
I'm running a Fractal Define 7 XL, so I have similar, but less airflow than you. I'm also using the built in heatsink on 3 of these drives, the 4th one (the SPCC) is using a PCI-E to M.2 expansion slot with a heatsink so it gets way more airflow than the other 3 drives.
I've used the super cheap $5 aluminum slab heatsinks and they made a noticeable difference for my early PCI-E ADATA SX8200. I think that a $10 heatsink would be more than enough to cool things down, and there's no way that it could make things any worse.
The closest I have to a direct airflow on my nvme drives is my GPU exhausting on them (usually air way hotter than ambient.) and the fact that I have a 120mm slim fan underneath my GPU.
You can see what I mean here, honestly, if you have space under your GPU, (and with a Mesh 2 XL, you might have the exact same clearance that I have.) that one little 120mm exhaust fan did more for my temps than any other fan in the system. Didn't change the nvme drives all that much though, but it did stop the gpu from recirculating the hot air that it create
Feb 22 22:56:29 is smartd: Device: /dev/sdc [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 113 to 112
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 194 Temperature_Celsius 0x0022 112 102 000 Old_age Always - 38
Temperature Sensor 1: 64 Celsius Temperature Sensor 2: 80 Celsius
Temperature Sensor 1: 49 Celsius Temperature Sensor 2: 54 Celsius
I use the included AsRock heatsinks on their ITX line and the temps are better than I've seen generally reported by other ITX users. Via HWInfo: idles at 29C and have seen it go to 52C while gaming with Cyberpunk.Probably because some of them are terribly designed, e.g. almost every lower-end ASRock board has what are little more than aluminum slabs, with few or any cuts, making them more heattraps than heatsinks due to almost no additional surface area.