Expert rating
Professionals
- 40gbps USB4
- Decency
- Beautiful, rugged design
Shortcoming
- The fastest USB4 SSD Aaj Tak
- Sometimes connected to only 10GBPS or 5GBPS
Our decision
We love rugged, beautiful design and relative power. But the issue of connection and the lack of 40GBPS performance in comparatively left us inadvertently.
Price when reviewed
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Sandisk extreme supporters with USB4 are a beautiful, rugged, relatively inexpensive external SSD with SSD 40GBPS aspirations. We say that there are aspirations, as many times it is connected to our test bed only 10GBPS or 5GBPS. Even when connected on 40gbps, it was slower than the competition.
What are Sandisk Extreme Pro SSD with the characteristics of USB4?
Sandisk extreme supporters with USB4 are much larger than the SSD old extreme supporters SSDs, although it completely imitate them in size, style and color. The drive is one rather 5.4-inch long, 2.2-inch wide, 0.45 inches thick, and weighs about 5.4 ounces. It is not that you make a mistake with my intention, I like solid and huge in an external SSD.
As you can see below, this sandisk is a favorite dark gray that sheds light on copper to open extra large cords. It is largely covered in the textured silicon that provides a good, comfortable grip.
Apparently, Sandisk Extreme Pro with USB4 uses the SSD USB4 protocol and is of high-end 40GBPS variety. The USB4 allows 20GBPS implementation, although we have not seen anyone. The USB4 V2 will apply 80GBPS like Thunderbolt 5, but has SSDs feature which are far away. Thunderbolt 5 SSD can be counted with fingers on one side at this time.
Sandisk gave the warranty of extreme supporters SSD with USB4 for a full five years, although it has been reduced by TBW. The sandisk did not say so, but we are assuming that this is a situation, as well as leaving it from the skyscraper, dividing it with an ax, etc., etc., as the speed of writing as 550MBPS is dropped from secondary cash, we are assuming TLC, which is normally rated with a capacity of 600TBW per terrabite.
What is the Sandisk Extreme Pro SSD with USB4?
The Sandisk Extreme Pro SSD with the USB4 is available in 2TB model for $ 280 and 4TB model for $ 430. It corresponds to pre-infamous competition such as Adata’s Se920 and OwC 1M2, but almost not bargaining which is the CRSAIR EX400U.
You can play your own role for much less with something like Ugreen CM642. But of course, you have upset to open and install SSDs. Overall, the price is not an issue with the extreme SSD Pro SSD with USB4 (Geez, I am tired of typing!). But there were issues.
How fast is Sandisk Extreme Pro SSD with USB4?
When it is operated at full speed, extreme supporters with USB4 drive were sharp, although not as fast as competition – it was finalized between some very fast USB4 SSDs. In our actual world transfer tests, it also fell behind a couple of 20GBPS SSDs. Additionally, it contained our testing beds with full speed.
Extreme Pro SSD with USB4 using the supplied cable (40GBPS logo) operates on only 10GBPS of the Thunderbolt 4 ports of our test beds, and 5GBPS on the other. Windows also warned that the drive should not perform as USB4. Gave full 40GBPS using the same cable at Thunderbolt 5 port of an M4 Mac Studio.
Using a super high-quality Thunderbolt 5 cable, the extreme Pro with USB4 was able to perform on 40GBPS on SSD PCWORLD test beds and perform full tests. However, a second attempt with the same Thunderbolt 5 cable produced low speed.
Note that the USB4 (Thunderbolt 4 and a marriage of USB) is still in its early stages, so interpreting issues are not shocking, although they have already been experienced. The drive can perform much better and connect more firmly over other systems. It did this on my Mac Studio.
This can be incompatible with the thunderbolt 4 implementation of our test bed, but we have never seen it from any other USB4 product. This may be the sandisk’s hand shaking or thermal management that is Ames. I asked both sandisk and all Thunderbolt/USB4 Lok, which I know about the issue, but did not hear back as this writing.
When the full 40GBPS is connected, you can see that the Sandisk Extreme Pro with the USB4 was largely coordinated, if Crystaldskmark 8 did not even have a competition in sequential tests.
The major weakness was in single queue/thread writing, which is the way to operate Windows, these weaknesses were shown on other tests.
In random 4K tests of CrystaldiscMark 8, extreme Pro SSD with USB4 was again, to smell with a large extent to smell with competition, except for a very disappointing single thread right score. There is a subject here.
We repeated single queues, single thread test several times to ensure that it was not a disaster. This may have to do something with secondary cash management because when we run it on our own, the score doubles. However, 40Mbps is still quite slow compared to the competition.
Again, Windows uses only one queue and thread (NVME now despite being a decade old) to write data, so it is not surprising that the extreme supporters with USB were away from SSD speed. It was actually slower than many 20GBPS USB 3.2 × 2 SSD in this test.
While not sad, the Sandisk Extreme Pro was best with USB4’s 450GB writing performance. Slow three minutes compared to Se920 and again, many slower than 20GBPs SSDs.
We were a little surprised that Sandisk did not draw much speed from this unit. But the company is not quite good with external SSD as it is with internal people. And this is not the first sandisk SSD for connection issues.
Note that most SSDs are capable of their advertised speed on some systems. The Thunderbolt of AMD is faster than the 4 implementation of Intel. Our test bed is Intel, which we have kept stable in more than 100 external and internal SSD tests. All the drives we tested have the same “obstruction”.
Should I buy Sandisk Extreme Pro with USB4?
The extreme supporter with the USB4 is beautiful, the rugged, feels great in your mits, cheap to the USB4 is cheaper than that, and the USB 3.2 × 2 is faster than the majority of 20GBPS SSDs.
He said, the issues of connection are a red flag, and the 40GBPS competition is fast. Wait for another amendment on this. If the problem is solved, we will see this review again, or Sandisk sends us a replacement unit with a better behavior.
How do we test
Our storage test currently uses Windows 11 (22H2) 64-bit Z790 (PCIE 5.0) with two Kingston Fury 32GB DDR5 modules (64GB memory total) on Motherboard/i5-12400 CPU combo. Intel integrated graphics are used. The 48GB transfer tests use an imdisk RAM disc up to 58GB of 64GB total memory. The 450GB file has been transferred from Samsung 990 Pro 2TB, including the operating system.
Each test is performed on a new formatted and trim drive so that the results are optimal. Note that such as any drive fills, the performance will decrease due to low nanda for secondary cashing and other factors.
The display number shown applies only to the drive that we were sent as well as the capacity tested. SSD performance may vary from capacity due to more or less chips, for reading/writing and the amount of Nand available for secondary cashing (writing TLC/QLC in the form of SLC). The sellers also swap components sometimes. If you ever notice a large discrepancy between the performance you experience and which we report (the system is almost identical), then in every way – we know.
