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orpheus1120

macrumors 65816
Jan 23, 2008
1,432
59
Malaysia
Yes the 1.5mm will work. You want full contact between the sandwich of ssd-thermal pad-top cover. 1.5mm will make sure of that. The imprint of the pad adhesive on the top cover suggested its 100% contact. The pad can be easily removed, provided if you follow some simple rules.

The strength of a thermal pad adhesive depends not only on the quality of the pad, but also on its temperature. I will not explain too much over here. But in short it becomes soft and elastic at higher temperature. This allows it to better fill gaps. At lower temperature, it's rather hard and brittle. Hence you may find it easier to remove the thermal pad if you leave the ssd powered on for a short period of time (circa 15-30mins) before you do so, making sure the thermal pad is hot enough.

But do not remove and reuse the thermal pad too often and be very careful about peeling it off. It loses adhesion over time if you do so repeatedly. Most thermal pads regardless of their quality may break most often than not during the peeling off. The trick is to ensure the pad is soft and hot.

But even if the pad breaks into sections it's fine. Just stick them back on the ssd and reuse. Use a fresh piece if you have been removing it many times.

I find it more economical if I buy thermal pads in larger size. I bought mine in 120mm x 120mm for $18. A typical SSD will need about a 68mm x 17mm (sorry metric guy here. Convert to inch on your own) section of thermal pad, at least for the SN850X. So I can get about 10-12 sections. That roughly translates to $1.50-$1.80 per thermal pad. Not bad.

The one I use is from ThermalRight, a Taiwan manufacturer who provide PC cooling components like heatsinks, fans and thermal pads etc etc. They are highly regarded as the top brands but definitely not expensive despite their reputation.

One thing to note is quality thermal pads have some heft to them. If you get to buy them physically, this is something you should be aware of.
 
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VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
Yes the 1.5mm will work. You want full contact between the sandwich of ssd-thermal pad-top cover. 1.5mm will make sure of that. The imprint of the pad adhesive on the top cover suggested its 100% contact. The pad can be easily removed, provided if you follow some simple rules.

The strength of a thermal pad adhesive depends not only on the quality of the pad, but also on its temperature. I will not explain too much over here. But in short it becomes soft and elastic at higher temperature. This allows it to better fill gaps. At lower temperature, it's rather hard and brittle. Hence you may find it easier to remove the thermal pad if you leave the ssd powered on for a short period of time (circa 15-30mins) before you do so, making sure the thermal pad is hot enough.

But do not remove and reuse the thermal pad too often and be very careful about peeling it off. It loses adhesion over time if you do so repeatedly. Most thermal pads regardless of their quality may break most often than not during the peeling off. The trick is to ensure the pad is soft and hot.

But even if the pad breaks into sections it's fine. Just stick them back on the ssd and reuse. Use a fresh piece if you have been removing it many times.

I find it more economical if I buy thermal pads in larger size. I bought mine in 120mm x 120mm for $18. A typical SSD will need about a 68mm x 17mm (sorry metric guy here. Convert to inch on your own) section of thermal pad, at least for the SN850X. So I can get about 10-12 sections. That roughly translates to $1.50-$1.80 per thermal pad. Not bad.

The one I use is from ThermalRight, a Taiwan manufacturer who provide PC cooling components like heatsinks, fans and thermal pads etc etc. They are highly regarded as the top brands but definitely not expensive despite their reputation.

One thing to note is quality thermal pads have some heft to them. If you get to buy them physically, this is something you should be aware of.

Then I'll order the thermal pads too, thanks for the advice. I can't find the ThermalRight ones on Amazon.de. Would you have a min to check which ones are available there and recommending one? Thanks!
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
Yes the 1.5mm will work. You want full contact between the sandwich of ssd-thermal pad-top cover. 1.5mm will make sure of that. The imprint of the pad adhesive on the top cover suggested its 100% contact. The pad can be easily removed, provided if you follow some simple rules.

The strength of a thermal pad adhesive depends not only on the quality of the pad, but also on its temperature. I will not explain too much over here. But in short it becomes soft and elastic at higher temperature. This allows it to better fill gaps. At lower temperature, it's rather hard and brittle. Hence you may find it easier to remove the thermal pad if you leave the ssd powered on for a short period of time (circa 15-30mins) before you do so, making sure the thermal pad is hot enough.

But do not remove and reuse the thermal pad too often and be very careful about peeling it off. It loses adhesion over time if you do so repeatedly. Most thermal pads regardless of their quality may break most often than not during the peeling off. The trick is to ensure the pad is soft and hot.

But even if the pad breaks into sections it's fine. Just stick them back on the ssd and reuse. Use a fresh piece if you have been removing it many times.

I find it more economical if I buy thermal pads in larger size. I bought mine in 120mm x 120mm for $18. A typical SSD will need about a 68mm x 17mm (sorry metric guy here. Convert to inch on your own) section of thermal pad, at least for the SN850X. So I can get about 10-12 sections. That roughly translates to $1.50-$1.80 per thermal pad. Not bad.

The one I use is from ThermalRight, a Taiwan manufacturer who provide PC cooling components like heatsinks, fans and thermal pads etc etc. They are highly regarded as the top brands but definitely not expensive despite their reputation.

One thing to note is quality thermal pads have some heft to them. If you get to buy them physically, this is something you should be aware of.
Actually I was wrong, they have them :)


Shall I order 1.5mm or even thicker?

Edit: there's more of them from searching properly https://www.amazon.de/s?k=thermal+p...ads++thermalright+1.5mm,aps,98&ref=nb_sb_noss
 
Last edited:

FilterJoe

macrumors member
Apr 10, 2023
31
20
I find it more economical if I buy thermal pads in larger size. I bought mine in 120mm x 120mm for $18. A typical SSD will need about a 68mm x 17mm (sorry metric guy here. Convert to inch on your own) section of thermal pad, at least for the SN850X. So I can get about 10-12 sections. That roughly translates to $1.50-$1.80 per thermal pad. Not bad.

Amazon (US) has the Thermalright Thermal pads, and includes a version called Extreme Odyssey II which costs less. It cost so much less that I'm wondering if it's as good as the original Extreme Odyssey.

Do you have an opinion?
 

orpheus1120

macrumors 65816
Jan 23, 2008
1,432
59
Malaysia
Don't overthink thermal pads. Get the best you are willing to afford. It makes no sense to me to save a few bucks at this stage. They don't cost much compared to the ssd and enclosure you have.

1.5mm is good enough. It's a snug fit. You want sufficient thermal layer but not excessive.
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
Don't overthink thermal pads. Get the best you are willing to afford. It makes no sense to me to save a few bucks at this stage. They don't cost much compared to the ssd and enclosure you have.

1.5mm is good enough. It's a snug fit. You want sufficient thermal layer but not excessive.

I literally just got the Samsung 980 Pro delivered, and the case should arrive soon as well. If I order the pads it may take a few more days. Is it possible/ok to install the pads that come with the case and then later replace them with other pads? or are they difficult to remove?
 

orpheus1120

macrumors 65816
Jan 23, 2008
1,432
59
Malaysia
To be honest, if it is me, I'll leave the top cover off without attaching any thermal pad. The cover is just to prevent liquid entry. For a few days your ssd will be fine without the top cover and it provides better airflow. That's what I did since my pad came in last too!

It's easy to remove, 4 screws.
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
To be honest, if it is me, I'll leave the top cover off without attaching any thermal pad. The cover is just to prevent liquid entry. For a few days your ssd will be fine without the top cover and it provides better airflow. That's what I did since my pad came in last too!

It's easy to remove, 4 screws.
But if I add the pads that come with the enclosure are they easy to remove later? Since I would have to wait anyway I think I am gonna try with the pads by Acasis first
 

orpheus1120

macrumors 65816
Jan 23, 2008
1,432
59
Malaysia
But if I add the pads that come with the enclosure are they easy to remove later? Since I would have to wait anyway I think I am gonna try with the pads by Acasis first

If you read all the posts in this thread, then you will find a member commenting on a design flaw of the Acasis TBU405, where there is no easy way to remove the top cover once the thermal pad is installed. Basically, the pad is stuck onto the cover. He managed to get the top cover off by repeatedly shaking the enclosure, with the screws out of course. In my opinion it is not really an issue that should cause any concern. I believe screw-in enclosure allows one to appropriate the tightness of the top cover with the thermal pad, something other design do not offer.

That said, there is a much simpler solution to removing the top cover actually. Find the smallest flat head screwdriver you have lying around or get one from the hardware store, or something made of steel and is tiny and slim, whatever. Below is mine.

IMG_0371.jpg


Remove the 4 screws securing the top cover to the chassis. Poke the flathead screwdriver into one of the holes like this (mere illustration, I removed only 1 screw to show what I meant):-

IMG_0368 2.jpg


Hold the base of the enclosure in one hand, and pry the screwdriver into the screw hole gently with the other, in a gentle rocking motion. The top cover will come loose. What you are essentially doing is slowly detaching the thermal pad from the top cover.

There, you crossed your first hurdle. Now remove the thermal pad. You won't have too much of a problem removing it. It is not as sticky as you think it is. If you follow my recommendation early, you may still be able to reuse the pad. If you gonna replace it with a new one, then ignore everything I said in my previous post and rip the pad off.
 
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VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
If you read all the posts in this thread, then you will find a member commenting on a design flaw of the Acasis TBU405, where there is no easy way to remove the top cover once the thermal pad is installed. Basically, the pad is stuck onto the cover. He managed to get the top cover off by repeatedly shaking the enclosure, with the screws out of course. In my opinion it is not really an issue that should cause any concern. I believe screw-in enclosure allows one to appropriate the tightness of the top cover with the thermal pad, something other design do not offer.

That said, there is a much simpler solution to removing the top cover actually. Find the smallest flat head screwdriver you have lying around or get one from the hardware store, or something made of steel and is tiny and slim, whatever. Below is mine.

View attachment 2187914

Remove the 4 screws securing the top cover to the chassis. Poke the flathead screwdriver into one of the holes like this:-

View attachment 2187915

Hold the base of the enclosure in one hand, and pry the screwdriver into the screw hole gently with the other, in a gentle rocking motion. The top cover will come loose. What you are essentially doing is slowly detaching the thermal pad from the top cover.

Gotcha. I watched a few reviews of this enclosure and they said that the enclosure comes with two thermal pads, one of 0.5mm and the other of 1.0mm. So I guess I can just use both like the did instead of buying other pads?
 

orpheus1120

macrumors 65816
Jan 23, 2008
1,432
59
Malaysia
Yes you can. But I won't stack both together personally.

There is still gaps between the 2 pads no matter how well you stick them together. Air is not a good thermal conductor. Therefore I would strongly recommend using a single 1.5mm pad instead. If you don't mind by all means go for it.
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
Yes you can. But I won't stack both together personally.

There is still gaps between the 2 pads no matter how well you stick them together. Air is not a good thermal conductor. Therefore I would strongly recommend using a single 1.5mm pad instead. If you don't mind by all means go for it.

Understood. I prefer following your advice to be sure. From the page I linked above (https://www.amazon.de/s?k=thermal+p...ght+1.5mm,aps,98&tag=macr05-21&ref=nb_sb_noss) which one do you recommend? I will order right away hoping it arrives at the same time as the case
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
Yes you can. But I won't stack both together personally.

There is still gaps between the 2 pads no matter how well you stick them together. Air is not a good thermal conductor. Therefore I would strongly recommend using a single 1.5mm pad instead. If you don't mind by all means go for it.

Just checked the picture you posted and it seems Amazon Germany has the same https://www.amazon.de/-/en/Thermalr...ight+1.5mm+extreme+odissey,aps,95&sr=8-9&th=1

Shall I order this one or do yo use something better in the list?
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
I got the case and the thermal pad finally. Reads are awesome at over 3100 MB/sec, but writes are at around 1340 MB/sec. Spotlight is currently indexing the drive but how much can it impact? I hope that's the reason because at the moment write speeds are a bit disappointing and below the Samsung X5.
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
I used the `sudo trimforce enable` command and now got almost 3000 MB/sec writes! :D Why do I still need to do this these days? I checked System Information prior to running this command and it showed "TRiM support: yes". Does it mean that it's supported but was not enabled?
 

orpheus1120

macrumors 65816
Jan 23, 2008
1,432
59
Malaysia
Which ssd did you get? Did you attach it to the mac's thunderbolt port or via a thunderbolt dock?

The drive is empty and I doubt spotlight indexing will be long. Did you format the drive to APFS?
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
Which ssd did you get? Did you attach it to the mac's thunderbolt port or via a thunderbolt dock?

The drive is empty and I doubt spotlight indexing will be long. Did you format the drive to APFS?

Samsung 980 Pro 2 TB with the Acasis TBU405. I applied the ThermalRight Odyssey 2 thermal pad as you recommended (it was a perfect fit btw!).

345 GB of space used after restoring from Time Machine and it's formatted as APFS. I have not turned FileVault yet. Can Spotlight affect the benchmark a lot? After a few mins from rebooting it's showing again just 1500 writes.
 

orpheus1120

macrumors 65816
Jan 23, 2008
1,432
59
Malaysia
Yes spotlight indexing will matter. You can wait for it to finish. There will be a dot on the magnifying glass icon on the top right of the menu bar if spotlight is indexing. Just wait for it to complete and retry your benchmark.

Is the write speed consistent with this ssd in Mac OS? Have you checked in this thread?

Found something not sure if it has been fixed.
 
Last edited:

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
Yes spotlight indexing will matter. You can wait for it to finish. There will be a dot on the magnifying glass icon on the top right of the menu bar if spotlight is indexing. Just wait for it to complete and retry your benchmark.

Is the write speed consistent with this ssd in Mac OS? Have you checked in this thread?

Found something not sure if it has been fixed.
No I wasn't aware of that thread and I am extremely disappointed now to have followed the recommendations by some people here and other places as well as the Acasis website :( I first ordered the Firecuda and then stupidly changed to the 980 Pro. I hate this.

I tried several ways to boot from a Samsung firmware update iso on both M1 and Intel macs and I couldn't get it to work. Now I am going to install Windows with Bootcamp on the Intel mac so I can use Samsung Magician to update the firmware. It's also ridiculous than Samsung doesn't offer this software for macOS yet. Unbelievable.
 

VitoBotta

macrumors 6502a
Dec 2, 2020
899
349
Espoo, Finland
I managed to update the firmware with Windows on the Intel MBP. I hope I dodged a bullet. Now I am hoping Spotlight doesn't take too long because I want to see the write speed.
 
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