You can get a lot more value from a self-built PC, if that’s a possibility? Big brands will probably be offering something in the i3/8Gb/500Gb HDD range for that kind of money, my self build would look more like:
– AMD FX / Ryzen
– Asus mobo
– 8Gb+ RAM (Lightroom benefits from 16Gb?)
– 128Gb SSD OS Disk
– 1Tb+ SSHD/HD for storage
– Decent brand PSU circa 500W
– Antec case (they are brilliant and cheap)
Check out some video encoding benchmarks, for value I can recommend the AMD FX w/ 6 cores, or you could even look into the new Ryzen CPU for that budget. I put together a budget water-cooled AMD FX gaming PC for about £400 last month 🙂