I’m still skeptical. At the time of the original Pentium (the last 586 from Intel, the fastest of which was 300 MHz), the usual amount of RAM was something like 16 or 32 MB. A 586 with 1 GB of RAM is extremely weird and probably impossible unless it’s some sort of high-end server. This does not check out.
Oh and DDR is also from around the time of the Pentium 4. I don’t think there exists a machine that has both DDR and an original Pentium (aka 586). Again, this does not check out and is probably impossible.