About the impact of SSD performance on DAZ
in The Commons
Hello everyone in the forum! I am upgrading my personal computer recently, but I am a little confused about the choice of SSD. I urgently want to know whether it is necessary to upgrade to PCIE5.0 SSD.
Does PCIE5.0 SSD have a significant improvement in loading scenes compared to PCIE4.0 SSD?
Does anyone know about this? I hope someone can help me, thank you.

Comments
You won't notice any big differences between PCIE4.0 and PCIE5.0 SSDs. Look at size and price instead.
Yes, but I just care if the PCIE5.0 SSD allows me to load scenes faster.
It is really hard to say since there are other factors in scene loading outside of drive speed. Technically, yes, scenes will load faster as PCIE 5.0 drives can have read speeds that are up to twice as fast as PCIE 4.0 drives. Whether or not that translates into a "siginificant increase" is dependent on more than raw drive speed. When I switched from a 7200 RPM HDD to a PCIE 4.0 SSD, which provided a huge jump in raw drive performance, the scene loading time did not increase at the same proportion. I would say that scenes loaded about 15-20 percent faster after the switch due to the other factors involved (e.g. DAZ has to load all morph packages installed for a Genesis 8 character no matter which are used, which can add a lot of time depending on how many characters and morph packs you have installed).
If you're coming from a non-SSD, you'll probably see a notable performance increase with any SSD.
You might also see an impact going from a SATA SSD (looks more like a traditional hard drive) to PCIe NVMe (looks more like a flat circuitboard).
I recommend paying extra for quality (I swear by the Samsnug Pro NVMe ones)
ChatGPT notes that "on paper, PCIe 5.0 doubles the bandwidth" but then notes that when measured in real situations, other hardware usually becomes the bottleneck to the point the difference between PCIe 4.0 and 5.0 doesn't really matter.
Be sure to back up any important stuff periodically, SSDs fail without warning when they reach end of life.
-> See Richard's answer.
That depends on the content - a complext prop with detailed geometry will mainly be one big file and that may show a significant gain, but with characters the main bottleneck is in memory after loading the data (building the links between properties) so there will be little if any noticeable gain there.
OK, I got it, thanks!
Indeed, currently I'm using PCIe 4.0 and it doesn't look like upgrading to PCIe 5.0 is very important.
Indeed, it seems that I don't really need to upgrade to PCIe 5.0.