Generally no.
PC hardware falls into two categories:
Already selling well- If something is very popular and sells well (current gen i5/i7, Ryzen, RX/10xx series GPUs, storage, etc) will not see discounts, why discount something thats going to sell anyway?
Not selling well- If something isnt selling well (peripherals, etc) the prices are most likely lower already.
This isnt saying you wont find good deals, but there arent any sure fire, general discounts. Most new PC hardware (CPU, GPU, RAM, etc) will see zero discounts.