right now its below red but thats because i shut down everything. PC is older should i upgrade or is there an easy fix?

Operating System
Windows 10 Pro 64-bit
CPU
Intel Core i5 4670K @ 3.40GHz 76 °C
Haswell 22nm Technology
RAM
16.0GB Dual-Channel DDR3 @ 665MHz (9-9-9-24)
Motherboard
Gigabyte Technology Co. Ltd. Z87X-UD3H-CF (SOCKET 0) 34 °C
Graphics
S200HL (1600x900@60Hz)
LG IPS FULLHD (1920x1080@60Hz)
Intel HD Graphics 4600 (Gigabyte)
4095MB NVIDIA GeForce GTX 1050 Ti (EVGA) 45 °C
ForceWare version: 391.35
SLI Disabled
Storage
931GB Western Digital WDC WD10EZEX-22MFCA0 (SATA ) 30 °C
Optical Drives
ASUS DRW-24B3ST i
Audio
NVIDIA Virtual Audio Device (Wave Extensible) (WDM)

apply new thermal compound and remove dust from the system.
If it continues post back here.

What do you have for a CPU cooler?

stock which what i think my overall problem is

i have dusted it and probably do need to reapply thermal paste

Thermal paste may help a bit, but I would recommend just getting a tower cooler for like $25.

a bit? hard to say that when you don't know the status of the paste, the cpu is like what 5 years old now?
Do the paste first, the stock cooler is enough if your not over clocking it.

if u alrdy have a paste, remove ur old one completely and apply a little bit of the paste and install the CPU cooler correctly. If you unevenly install it, it's gonna be worse.
also if u dont have a paste and its like $10 one, might as well just spend the extra 15-20 for a cheap cryorig/evo212 cooler, as it alrdy comes with a tube or preapplied paste.

I guess I always assume people with a K sku chip and unlocked board are overclocking (otherwise why spend the premium on them).

how do you tell which cooler you need? isnt there like different pins or something?

socket type.
evo 212 and cryorig h7 both support your cpu socket.