Unboxing, Heatsink installation, and Temperatures Under Load

The Sabrent Rocket 4 Plus comes in a small box that advertises it as an advanced performance M.2 PCIe Gen4 x4 NVMe SSD.  Sabrent also sent us an aluminum heatsink for the PS5 console as well a copper/aluminum NVMe heatsink for the PC.  As it turns out, we don’t have a PS5 nor do we need a NVMe heatsink – although we tested it – since the ASUS ROG Maximus Apex has a heavy duty heatsink integrated into the motherboard.

The back of the Rocket 4 Plus box doesn’t give any further details except to recommend visiting www.sabrent.com/rocket.   In contrast, the PS5 heatsink details are spelled out on the back of the box.

 Here is the Rocket 4 Plus box again next to the PC heatsink box which spells out its details.  

The presentation of the Rocket 4 Plus is outstanding as the SSD comes in an aluminum jewel box style container with the installation instructions.

Pictured below are both sides of the Rocket 4 Plus.  

Of course, the end user is not supposed to remove the heatsink or the paper on the back with a warning that the warranty is voided.  We did it anyway to show the ICs below the heatsink and under the paper.

ICs are on both sides of the PCB unlike the single-sided Cardea A440 Pro Special Series.  A Phison PS5018-E18 controller is coupled with Micron B47R NANAD and SK Hynix DDR4 DRAM to achieve its blazing fast 7,000MB/s specifications.

It is very unwise to operate the Rocket 4 Plus with only the foil heatsink as the heat generated by the ICs will throttle performance as temperatures will easily exceed 80C.   The $24.99 Rocket NVMe heatsink – purchased separately – is a complete easy-to-install kit that will securely lock down using an M.2 screw to the motherboard following the simple instructions.

Unfortunately, we were unable to install the Rocket 4 NVMe heatsink into our Apex motherboard as its twist locks could not hold it down.  So for the following picture, we installed it in our i9-10900K PC.  It’s a very good-looking heatsink and quite effective also.

We benchmarked the Rocket 4 Plus in our Apex motherboard using its included 5.6oz (159g) heatsink.  In comparison, the Rocket NVMe heatsink weighs in at 4oz (115g) which also makes it a very solid cooling solution.

Above are the Apex MB and Rocket NVMe heatsinks compared.  

If you have a PS5, the Rocket 4 Plus is an ideal fast SSD and a $19.99 heatsink is also available for it.


Do not operate your Rocket 4 Plus SSD without a heatsink unless you are only going to use it for light duty or you will get temperatures approaching 80C with performance throttling. 

Using the massive NVMe heatsink included with the ASUS ROG Maximus Apex motherboard, we never saw temperatures rise above 40C.  Using the Rocket NVMe heatsink, the highest temperatures we observed was 46C under the most demanding conditions.

After installing the Rocket 4 Plus, the user may need to format it before use.  If you are planning to clone it, make sure both disks are GUID or convert one of them first. You can use the free Acronis True Image cloning software for Sabrent included with every Sabrent SSD purchase.

Lets look at our test configuration next.