A few days ago Samsung officially released a new generation of flagship SSD hard drive 990 Pro, however, people are surprised that the previous certification said PCIe 5.0 hard drive, the result is still PCIe 4.0, sequential read speed 7450MB / s, sequential write speed up to 6900MB / s. Compared to other SSD brands of flagship products mainly push PCIe 5.0, speed up to 10- 14GB/s, Samsung 990 Pro this wave is a squeeze upgrade, refused to PCIe 5.0, stick to PCIe 4.0.
Samsung already has several PCIe 5.0 drives, especially for enterprise products, so there is no problem with PCIe 5.0 technology on the 990 Pro. The active toothpaste squeeze is more likely to be due to other factors, such as heat generation from PCIe 5.0 drives.
Due to the doubling of performance compared to PCIe 4.0 drives, the heat of PCIe 5.0 is also a problem. Previously, main control chip maker Qunlian has talked about this issue and believes that PCIe 5.0 and the future PCIe 6.0 will require active cooling.
We have done a lot of work to ensure that SSD power consumption is within reasonable limits, but there is no doubt that SSDs will get hotter and hotter, just like CPUs and GPUs started getting hotter in the 1990s,” said Qunlian. By the time we get to the PCIe 5.0/6.0 era, we’ll have to consider active cooling.”
In Gunlink’s view, PCIe 5.0 SSDs had to be paired with large heatsinks but eventually had to rely on active fans to get the heat out quickly.
On the 990 Pro, Samsung also launched two versions, one without a heatsink and one with a 990 Pro with heatsink, that is a version with a cooling vest. To ensure that the heat can be controlled without a fan, the 990 Pro did not choose a PCIe 5.0 master this time.
