Which one feels better for you?
Daily work, school, and light video editing
Both chips can handle word‑processing, spreadsheets, and streaming without a hitch.
The Intel i7 11700 is a little quicker when you open a few tabs or run a single program, so it feels a touch snappier.
If you’re building a normal home computer or a gaming rig, the i7 is the easier, lower‑power choice.
Gaming
Video games love the fastest single‑core speed.
The i7 11700 can push its clock higher (up to 4.9 GHz) than the AMD RT3945WX (4.3 GHz), so it gives a smoother, higher frame‑rate experience on most titles.
For a typical gaming PC, the Intel chip is the safer bet.
Heavy video editing or 3‑D work
Both CPUs can edit a 4K clip in a reasonable time, but the AMD RT3945WX has 12 cores and 24 threads, a huge 64 MB cache, and eight memory channels.
When you’re rendering a long, complex project or running several editing programs at once, those extra cores and memory lanes let the AMD chip finish the job faster.
The Intel chip is still fine for smaller projects, but it won’t keep up as well when the workload grows.
Workstation or server‑style tasks
The AMD RT3945WX is built for multitasking.
It can hold a lot of RAM (up to 2 TB), uses ECC memory that protects data from corruption, and offers many more PCI‑Express lanes for extra GPUs, SSDs, or other expansion cards.
It also lets you tweak the clock speed for extra power if you have good cooling.
All of this comes with a higher power draw and the need for a beefier power supply and cooler.
Simplicity and power efficiency
The Intel i7 11700 runs on a 65‑W socket, so it’s easier to cool and works with most mainstream motherboards.
It’s a straightforward, efficient choice for a compact desktop or a gaming tower.
Bottom line