How do I keep my external nvme drive cool?

i am using an externalm memory nvme m.2 on usb. I am wondering if during the plotting is better keep the box of memory opened.
The box is made of aluminium.
what do you think what is better to dissipate the heat?

Thank you

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i doubt your utilizing your m.2 through usb, anyway use hdsentinel to see if there’s any point, you can monitor your hdd, ssd.

this is the memory: with an external box usb.
Maybe it is not correct but that is not the point, however I ll follow your suggestion

@zEeTv he means an external USB drive! Make sure it is USB 10gbps (superspeed) or USB 20gbps (superspeed latest gen) if you can.

To keep it cool I continue to recommend these very very nifty external 120mm USB fans… so handy, they can be daisy-chained and have a speed controller and even an integrated power adapter if you want higher speeds from being plugged into a wall socket!


What, you don’t put ice cubes on it?

(This is actually something I did for my iPhone 5s long time ago :laughing: )

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the memory is gen 3 but the box not it is gen 2.
So do you think it is better to keep closed the container?

to be honest I was thinking something like that :rofl:

oooh now looking into external ssd’s this case looks tempting ICY BOX IB-1922MF-C32

Well there is usually a silicone pad that transmits heat from the drive to the aluminum case… it’s hard to say unless you show the specific model. I recommend this Orico which is 20gbps and the newest, fastest ASM2364:

Equipped with ORICO’s latest USB3.2 Gen2 main control chip ASM2364, which supports up to 20Gbps transmission bandwidth,uses PCIe 3.0 x4 interface with a theoretical bandwidth of 4GB/s, fully meets the bandwidth requirements of USB 3.2 20Gbps (2.5GB/s) and support NVMe

As you can see in the photo here it comes with a silicone pad which touches the aluminum case and the NVME drive to transmit heat from the NVME drive through the case… I’ll take a picture I have one here hold on…

Please note that the silicone pads usually have a thin clear plastic film on them that you must remove before application! It should be a little “sticky”, not shiny and smooth… so be careful.


my model is this one

In the packet there is a termal past 3m to put on the memory

Oh I have some bad news for you, that SSK enclosure is not the best… I believe it is a JMicron chipset :frowning:

I could not complete any Chia plots on that controller, but maybe you will be able to… I tested a bunch before arriving at the Orico.

Important and matches my experience so I will quote in full

I know a ton about these adapters and the chipsets they use, after having gone through a bunch of them to find which were reliable and which were garbage.

DO NOT BUY the JMicron adapters, like this one.

There are four chips on the market: JMicron JMS562, JMicron JMS583, Asmedia ASM2362, and Realtek RTL9210.

The vast majority of adapters on the market are JMicrons and they all have the same problems. There are only a handful of adapters which have the Asmedia and Realtek chips.

The JMicron chips are garbage. They make the SSD run super hot all the time and when doing large transfers they can actually hit the thermal limits on the SSD and it will start throttling. They obviously are pulling a ton of power from the USB port: so much that sometimes the USB port can’t handle it and the drive drops off the USB bus. They have a ton of problems if you want to try and use one as a boot drive, and all manner of stability problems such as the drives suddenly not working for no apparent reason or falling off the USB port entirely. I went through multiple JMicron adapters and they all had these problems.

I don’t know a whole lot about the Asmedia chip because I don’t have one, but I get the impression they are better than the JMicron chips. UGreen makes one which I hear is pretty good.

I have two Realtek RTL9210 adapters. They “just work”. Orico makes two based on this chip, Jeyi has two, Pluggable has actually switched their adapter from using a JMicron chip to Realtek because of these issues, and there’s a bunch of cheap no-name chinese adapters.

The Realtek adapters don’t get hot at all and I’ve not witnessed any thermal issues like the JMicron adapters had. I can’t hit thermal limits on the NVME drives if I try, and performance is very similar (better in a few places, worse in a few others).

All of the chips have similar performance characteristics as far as I know.

Price-wise, the Pluggable is probably the most expensive Realtek-based adapter available in the USA at $50, but it’s good. You can also look for the Jeyi, Orico, or generic adapters on Amazon or Aliexpress and they run $18-$25. Sorry I don’t have exact model numbers off the top of my head.

I can confirm the Realtek (Plugable) controllers are pretty good and can complete a single plot, but failed on multiple simultaneous plots.

The Orico and the ASM2364 is what you want, if you are gonna be plotting on the drive.

If all you want to do is copy files on and off it’s no big deal you could use almost anything. I think that is why the market tolerates this nonsense. But plotting is INTENSE reading and writing to the drive… it is not casual copying of files back and forth…

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:cold_face: uuu I didnt know that
Today I just had some test, tomorrow I’ll put it to plot. I will let you know if it is able to finish :crossed_fingers:

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I got this sabrent one and it plots reasonably quickly

do you know its chipset?

I had to dig pretty deep but per Reddit it is Realtek RTL9210b, which is a decent one. I can complete a single plot on that chipset at least.

My Sabrent EC-NVME uses the JMicron JMS583 chipset and it’s working well on my old laptop plotting 5 k32s a day over USB 3.0 (limitation of the laptop).

I have not tested it at the full USB 3.1 speed but the most beneficial thing you can do is update the firmware to 2.0.9 which fixes a lot of bugs. Enclosure manufacturers often don’t supply updated firmware but fortunately they all share the same firmware binaries.


Hi, do you know if it supports m.2 PCIe 2280 4.0?
How has it worked so far?

It’s 20gbps, so that’s the throughput limit of the interface.

Would you recomend the Large one:

ORICO 20Gbps M.2 NVMe SSD Enclosure Adapter, USB3.2 Gen2 X2 Type-C to NVMe PCI-E M-Key Solid State Drive Built-in Fan Aluminum External Case for SSD Size 2230/2242/2260/2280(M2PVC3-G20, Grey)

Or just de medium one, the difference I see is the built in fan. Maybe the fan will fail at some point by working too many straight hours and cause the whole case to shut down?