So it is worth it to buy the sabrent 2tb rocket 4 plus?
As
@TheLostSwede mentioned, it's really dependent on your use-case for the system.
I ask if the difference is worth it
The difference between PCIe 3.0 and PCIe 4.0? See the second line in my quote from Swede's post below:
It kind of comes down to what you use your system for, but apart from the additional cost, there are no downsides.
You wouldn't really notice it in most instances. It's not like moving from spinning rust to an SSD, that's for sure.
The price difference seem to be more like $150, which is a lot of money for the same amount of storage (PCIe 3.0 vs the latest 4.0 one).
Given that your main use is gaming and you
might do some video editing in the future, personally I'd be hesitant to shell out for a PCIe 4.0 drive right out of the gate. At this time, NVMe SSDs (let alone PCIe 4.0 NVMe drives) don't really offer a significant performance improvement over SATA SSDs when it comes to game load times. Microsoft's Direct Storage implementation on Windows may change that, but until then, we don't really know if it will or by how much. It also has to be specifically supported by the games themselves.
If you're dead set on video editing that'll make use of the high sequential read and write speeds NVMe has to offer, then sure, opting for an NVMe drive isn't a terrible idea. But to me, if you're unsure that you're going to be doing a lot of video editing like your initial post makes it seem, I would opt for a cheaper (maybe even SATA) SSD now and then spring for a better one if you find you really need it. Personally, I'm still rocking SATA SSDs only. All I do is game and occasionally trim down a recorded clip. I have no need for NVMe speeds at this point in time. Maybe that will change come Direct Storage's arrival on PC, but I'll cross that bridge when I come to it.
TL;DR: If you're set on NVMe, I would go for a Gen 3 drive now and add a Gen 4 one later if you find you're doing a lot of video editing. At this point though, with gaming being your main focus, you likely don't even need a Gen 3 NVMe drive and could make so just fine with SATA. It really depends how much money you want to throw around.