I'm also a British English speaker, and I almost always hear "D-RAM". It's been a while since I'm encountered someone using "Dram". On the other hand, I've alw

I'm also a British English speaker, and I almost always hear "D-RAM". It's been a while since I'm encountered someone using "Dram". On the other hand, I've always said "Prom" instead of "P-ROM" (for programmable ROM). I've never considered why there is a difference.