Next button greyed out on creating striped volume 4.03GB

Having the pagefile on a separate partition is a bad idea that will impair performance. The ideas behind this are based on misconceptions. Having it on a separate local physical drive, if it is comparable in performance to the system drive, may be beneficial. But with the RAM you have I doubt it would be noticeable.

In most cases having a system managed pagefile on the system partition is as close to optimum as to make no difference.

Configuring RAID 0 with your current hardware configuration, even if possible, would impair performance. RAID 0 will improve performance (usually not worth the effort) but only if certain conditions are met. This is often overlooked.

you shouldn't put the pagefile on a raid volume ever.
neither 0, nor 5 or 6. os might wan't to initialize page file before raid is ready.
got that from an lsi manual.

i put pagefiles on seperate non raided ssds sometimes. but only in machines with insane amount of ram.

You can put the pagefile on a RAID 0 volume if there is a hardware RAID controller. But even then RAID 0 will do nothing for pagefile performance. RAID 0 benefits most for large sequential reads. Pagefile usage is typically small random reads mixed with access to other files, about the worst possible case for RAID 0. From a performance standpoint an SSD is virtually ideal for a pagefile.

I am not a big fan of RAID 0. Usually it is more trouble than it is worth.

I did that once on a proper lsi controller and was getting errors in event log.

then i read the manual for the controller and it said that wasn't a good idea to begin with.

so maybe even that is hit and miss.

even the cheapest SSD costs more than my computer. not the kind of money i have. i have like 0 cents to spend on computer upgrades unless i beg my mother for something for months and months and months.