High speed with ASCII.jp PCIe 4.0!Try the M.2 SSD "WD_BLACK SN750 SE" that emphasizes cospa

　Until just a few years ago, SSD was the mainstream SATA connection was.In terms of performance, PCI Express (PCIe) connection compatible with NVME M.2 SSDs are overwhelmingly fast, but the price is high, and the high -end models were limited to the high -end models.

　However, as the PCIE connection SSD is low, the share gradually increases.Most PCs are now using PCIE -connected SSDs.What I want to be aware of here is that there are various speed products even if you say "PCIE connection".

　What is particularly complicated is that there is a difference in the interface.When the PCIe connection SSD appeared, Rivision 3.0 ... "PCIE 3.There was only 0 (PCIe Gen 3) ", but now the speed has been doubled..A product of 0 (PCIe Gen 4) has also appeared.

　Also, PCIE can be accelerated by bundling multiple lanes, so it is usually specified."X 4" using four lanes is common, but some cheap products use only two lanes.The table below is that the theoretical value of the transfer speed is briefly summarized how many differences in the interface speed.

　However, this transfer speed is just the theoretical value.Since 100%is not always used, about 80 to 90%is a substantial upper limit of the transfer speed.

　Of course, the speed of the SSD is not determined only by the transfer speed of the PCIE connection.This is because the speed changes greatly depending on the flash memory and controller to be used.

　"WD BLUE SN550" (PCIe 3), which is currently popular in Western Digital SSD.0 × 4), "WD_BLACK SN750 SE" (PCIe 4.0 × 4), "WD_BLACK SN850" (PCIe 4.Let's take a look at the difference between the interface and the speed, using three), 0 × 4).Here, each 1TB model is compared with specifications.

　The WD Blue SN550 and the WD_BLACK SN750 SE have about 2 times the interface transfer speed, but the difference between reading/writing is about 1..5 times.Also, the same PCIE 4.The 0 × 4 WD_BLACK SN750 SE and WD_BLACK SN850 can be seen that the speed is nearly twice as the interface speed is the same.

　If you actually want to buy an SSD, if you pay attention to this speed, it will be correct to choose WD_BLACK SN850.However, please look at the actual selling price.No matter how fast, the WD_BLACK SN850 is more than twice as high as others.

　Looking at WD_BLACK SN750 SE, the performance is more than half of the WD_BLACK SN850, but the price is about half price.Also, even though it is not 20 % higher than the WD Blue SN550, the performance is about 1..It is 5 times.In other words, it is a cost -effective model that can enhance the maximum speed with a small additional investment.

　If you think about it in this way, PCIe 4.Although it is not that fast as a 0x4 SSD, it is a very interesting product.Let's check how much the performance of this WD_BLACK SN750 SE is.

"WD_BLACK SN750 SE" has a speed of 3600MB/s at the sequential lead.It is a model with excellent cost performance that balance high speed and low prices.

Right speed comparison using three SSDs!How far will it change from the nominal speed?

　This time, the comparison of the "WD_BLACK SN750 SE" was prepared for the "WD Blue SN550" and "WD_BLACK SN850", which were mentioned earlier in the nominal speed.Let's take a look at how the actual speed is in these three SSDs.

1TB model of "WD_BLACK SN750 SE" which is the main target this time.PCIe 4.The feature is that it is excellent in cospa while corresponding to 0.

1TB model of "WD Blue SN550" which is popular as a low -priced model.PCIe 3.Although it will be 0, it is recommended for those who have a low capacity unit price and focus on storage capacity.

A 1TB model of a super -fast "WD_BLACK SN850" with a maximum of 7000MB/s.Popular with people who value performance rather than prices

　First, "CrystalDiskMark" is a standard.It is a benchmark software that allows you to measure four types of speeds with different conditions (each of the leads and lights for a total of eight types).The condition is the default (data is 1GIB, the maximum value measured 5 times) is performed three or more times, and the result of the value in the center is adopted.

　PCIe 4 for testing.Uses 0 x 4 compatible Intel small PC "NUC11PAHI5".A small barebone kit that uses Core i5-1135G7 for the CPU, and was used after installing a 8GB x 2 memory (DDR4-2666).

As a result of measuring the speed of WD_BLACK SN750 SE with "CrystalDiskMark"

Compare maximum speed by focusing on sequential access.All of them had almost the same speed as the nominal value

　If you compare it in a graph, you can see how fast the WD_BLACK SN850 is.Despite the inferior to this, the WD_BLACK SN750 SE is clearly fast and the price difference is definitely a very attractive option.

　This is a speed comparison by storage alone, but what happens when you use the app?To examine this, I compared the "App Start-Up Score" contained in "Essentials" using "PCMark 10", a comprehensive benchmark software.

　As the name implies, this value is a score calculated from the start time of the app, and the higher the number, the higher the speed.

Compare with "App Start-Up Score" of "PCMark 10".There is a slight difference in the numbers, but there was no big difference in the range of the error.

　Unlike sequential access, which is the maximum speed, it is harder to make a difference than expected at the application startup speed, which increases access to detailed data.Although there are some differences, the difference is the range of the error.Every time I measured it, the score went up and down, and the victory was replaced.Of course, there is no speed difference that you can clearly experience.

　Let's check the loading time of the game as another real speed."Final Fantasy XIV: Akatsuki's Final Benchmark" (hereinafter, FF XIV bench) can record not only 3D graphic performance but also data loading at the start of each scene.I used this feature to find out if there is a change in the loading time in total.

　The loading time seemed to be effective, and it was shortened for continuous execution.Therefore, the PC is restarted every time, the first first time is measured three times, and the average value is compared.In addition, the setting of the benchmark is "highest quality" and the resolution is "1920 x 1080".

FF XIV bench loading time.The unit is second.The time difference was small, but surprisingly varied.

　Although there is almost no difference between WD_BLACK SN750 SE and WD_BLACK SN850, about 1 from WD Blue SN550.It was confirmed that it was speeding up for about 5 seconds.In a short time, unlike PCMark 10 scores, it is certain that the blur is small and the waiting time is definitely reduced.

　The larger the data you handle, the longer the loading time tends to be.If you play a large title well, the higher the speed of SSD, the shorter the waiting time.