Not enough of the variables are known to answer this. But I want to mansplain it for other people that come to this thread who may not know as much as you…
IF your system is properly spec’d and IF you’re using the correct slots for the correct things, you will net a pretty significant increase in IOPS (load times, cut scenes, etc.) by having your Game AND collateral running from an NVME drive. (the SSD drives that look like a Borg stick of gum)
The variables are.
1.) How many PCI Express Lanes do you have on your CPU.
*determine this by google fu. eg. An intel i7 10700k has 16 total lanes. A Ryzen 7 3700x has 20. (16 reserved for GPU slots, and 4 for storage devices)
These are “literally traffic lanes” like on a highway, between the bus, where things connect, and the CPU. So, More lanes = greater bandwidth.
The remaining PCIe capacity is managed by the Chipset itself. (like the x490, etc. in the case of intel)
2.) How many PCI Express lanes is your GPU Using ?
*it’s almost certainly x16, but it is important to note that if you decide to pop another PCIe card like a WLAN adapter or something in one of those slots, you can potentially starve your Storage devices for bandwidth, and even potentially halve the 16x for GPU, to 8x. (see your motherboard documentation)
3.) Insure your GPU is in an x16 and not an x8 slot. (yes, some boards still have different slots.)
Some board autodetect and some boards require the GPU to be in a specific x16 slot (even if there are 2 x16 PCIe slots, for instance.) again, That Motherboard manual we never read, is handy for this.
4.) If you have a pure SSD SATA disk (not an NVME drive, which is PCI express, not SATA) but the little credit card sized drives, these are ALL SATA connected, just like your typical Spinny Disk.
So, insure that you have the SSD SATA cable plugged into the correct port on the Mobo so that it has full bandwidth. (some motherboards have the Sata ports mapped to different controllers. Some even have Sata 3.0 and Sata 6.0 slots separate.
// For instance, if the board has hardware RAID capability, the ports that have RAID ability, are sometimes mapped to that chip and not to a Sata 6GB controller. The rest of them usually do RAID in software, and thus, map ALL ports to the same Chipset controller. It’s important to know tho.
5.) if you have an NVME drive, make sure you have the drive in a REAL NVME PCIexpress port, not just a regular M.2 slot. Some board took the guess work out for the end user and just made the m.2 slots keyed such that a standard M.2 drive (non NVME disk) would pop right in.
NOTE: M.2 is a physical standard, not a Drive Type. It’s just the name for the connector. So you can have 2 drives side by side, where one is a Sata M.2 and one is an NVME M.2. Yes They SHOULD be keyed slightly differently, but they aren’t always easy to tell the difference.
Last but not least, it NEVER hurts to download a free copy of Crystal Disk Info and run a performance check with your drive plugged into different ports JUST to see if there is a difference. It will also give you information about errors stored in the drives controller, and provide info such as temperatures, etc.
We don’t tend to worry about temps on Hard Drives, because the modern Flash drives don’t have moving parts, however, smaller mass means less heat dissipation so they are facing greater extremes and temp swings. You may even find that by moving airflow around you gain performance by keeping your SSD / NVME drives cooler.
Hope this info helps you optimize your PC to get the best performance out of your Sim Experience!