Start saving your money folks for that GeForce RTX 2080 Ti for Halo Reach at 4K 60FPS... I mean, wait -- 343 industries has just released the official PC specs for Halo Reach and they are recommending just a GeForce GTX 770 for 4K 60FPS.
343 Industries official PC requirements for Halo Reach see you needing a mix of low-end CPUs in the 1080p 60FPS range with an AMD FX-4100 or Intel i7-870 processor, 8GB of RAM and either an AMD Radeon R7 360 or NVIDIA GeForce GTX 560 Ti graphics card. Yeah, that's not a typo -- an AMD Radeon R7 360 or GeForce GTX 560 Ti.
If you want to crank things up to 4K 60FPS then 343i recommends only modest PC specs as well, with an older and very much previous-gen AMD FX-6350 or Intel Core i5-3450 processor, the same 8GB of RAM, and either an AMD Radeon RX 480 or GeForce GTX 770. Once again, that's not a typo -- you need only a Radeon RX 480 or GeForce GTX 770 to run Halo Reach at 4K 60FPS.