Test system and test preparation
It’s the same as always: I use the usual suspects such as CrystalDiskMark and Atto to check the theoretical data from the specs. Let’s see what remains of the theory in everyday life after the first wear and tear in the workstation run. The SSDs to be tested are located in the first PCIe 5.0 NVMe slot of the motherboard and are not used as system disks.
I also use AJA as an everyday test to simulate the encoding of larger Ultra HD video streams and the SPECwpc storage test, which contains a lot of real applications and it will be interesting to see what performance remains with the large workloads. However, I picked out the applications with the biggest differences and loads as examples. I have also summarized the individual components of the test system in a table:
| Test System and Equipment |
|
|---|---|
| Hardware: |
AMD Ryzen 9 7950X |
| Cooling: |
Alphacool Eisblock XPX Pro Alphacool Eiswolf (modified) |
| Case: |
Raijintek Paean |
| Monitor: | BenQ PD3220U |
| Thermal Imager: |
1x Optris PI640 2x Xi400 Thermal Imagers Pix Connect Software Type K Class 1 thermal sensors (up to 4 channels) |
| OS: | Windows 11 Pro (all updates, current certified drivers) |
Sequential performance of the used SSDs
The synthetics are a good way to really run out the big numbers. We will see later how well this works in reality with the real application benchmarks. That’s why I’m starting with CrystalDiskMark and four different file sizes. The SSDs were no longer brand new at the time of testing (I always do these tests at the end for certain reasons) and I had already had fill levels of around 50% before deleting the data several times.
This certainly explains why you can still achieve impressive figures, but perhaps not quite reach the maximum. Hence the wording with the “up to”. If we now compare the Corsair MP700 Pro SE and MSI SPATIUM M580 Frozr, we can hardly see any difference. Corsair advertises the 4TB version with over 14000 MB/s for reading, which I achieve pretty much exactly on my AMD test system. The same applies to writing.
| Corsair MP700 PRO SE 4TB |
MSI SPATIUM M580 Frozr 4 TB |
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You can see very clearly that the dynamic pSLC does exactly what it is supposed to do, mind you with an empty (albeit not virgin) SSD. The nice thing about the 4 TB SSD is that there is plenty of space left and you should therefore never fill it more than 2/3 full with data. A higher load does not affect reading, but the dynamic SLC will certainly reach its limits when writing. And if you do it over and over again, it will eventually no longer be possible to switch the memory modules between the two methods.
ATTO works in a very similar way, although I only work with two sizes here, which ultimately results in the same thing. The limit of 14000 MB/s is clearly missed, but it is still enough for an impressive result.
| Corsair MP700 PRO SE 4TB | MSI SPATIUM M580 Frozr 4TB |
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But what happens when you stream a video? The industry uses the AJA benchmark for this, which is effectively an interface between synthetic benchmarks and practical applications. The drop in the write rate differs significantly, the M580 Frozr “pumps” a little less and even shows the more constant image.
| Corsair MP700 PRO SE 4TB | MSI SPATIUM M580 Frozr 4TB |
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Reading is also quite fast, although the theoretically possible speed is not reached here either.
| Corsair MP700 PRO SE 4TB | MSI SPATIUM M580 Frozr 4TB |
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I have attached a detailed AJA protocol for you:
BENCHMARK-TABLE
We can see that the comments made on the previous page about the dynamic pSLC cache and the behavior with larger file blocks are completely correct. Smaller file movements would be even faster if the overhead of the file system is omitted.
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