Question UX3405 upgrade 1TB to 2TB

[avb2]

Hi,

I would like to upgrade my 1TB NVME with 2TB
How do I know if I should get WD_BLACK 2TB SN850X with heatsink or not? is it even supported?

I am not a gamer but I open many tabs at once

WD heatsink is better than buying https://www.aliexpress.com/item/1005006751948717.html ?

I use ASUS UX3405 Core Ultra i9/32gb:
https://www.ultrabookreview.com/wp-content/uploads/2025/12/internals.jpg

Thank you.

 

[Bob.B]

Hi,

I would like to upgrade my 1TB NVME with 2TB
How do I know if I should get WD_BLACK 2TB SN850X with heatsink or not? is it even supported?

I am not a gamer but I open many tabs at once

WD heatsink is better than buying https://www.aliexpress.com/item/1005006751948717.html ?

I use ASUS UX3405 Core Ultra i9/32gb:
https://www.ultrabookreview.com/wp-content/uploads/2025/12/internals.jpg

Thank you.

Does the orig disk have a heat sink?

If not I would try without on the new disk and monitor the temps.

 

[avb2]

Does the orig disk have a heat sink?

If not I would try without on the new disk and monitor the temps.

I don't know... Have you seen the photo I found?
https://www.ultrabookreview.com/wp-content/uploads/2025/12/internals.jpg

 

[Bob.B]

I don't know... Have you seen the photo I found?
https://www.ultrabookreview.com/wp-content/uploads/2025/12/internals.jpg

That link gives an error.

Open up the pc and look.

 

[avb2]

That link gives an error.

Open up the pc and look.

it works...

I took it from ultrabookreview review of the UX3405

 

[Bob.B]

it works...

I took it from ultrabookreview review of the UX3405

There may not be enough space to fit a proper sized heat sink.

Your call if you want to get the new disk with a heat sink.

I suppose you can always remove the heat sink if there is a space problem.

 

[USAFRet]

it works...

I took it from ultrabookreview review of the UX3405

This is what we out here see with your link:

 

[avb2]

This is what we out here see with your link:

That's odd. it works for me even in incognito mode.
How about https://www.ultrabookreview.com/66513-asus-zenbook-14-ux3405-review/ ? the photo is part of this article.

 

[USAFRet]

The inside of your laptop.

No, the existing drive does not have a heatsink on it.

 

[avb2]

The inside of your laptop.

No, the existing drive does not have a heatsink on it.

How can I know if the heatsink will actually fit in? Do I need it?
Is it better than adding thermal pad sticker on the drive?

 

[USAFRet]

How can I know if the heatsink will actually fit in? Do I need it?
Is it better than adding thermal pad sticker on the drive?

A "thermal pad sticker" is only that which goes between the drive and some big cooling thing.
It provides no cooling of its own.

Would a heatsink fit?
Completely unknown.