When it comes to processors clock speed is king! More cores doesn’t help Sketchup performance so look at a faster CPU even if it has less cores. My last machine purchased 11/18 was an Xotic PC running the following:
Intel i7 8086 overclocked running at over 4ghz topping out over 5.5ghz (6 cores, 12 mb cache 4-5ghz clock speed)
Gigabyte RTX 2070 with 8gb
2-Samsung EVO 970’s running stripped (raid 0).Gives me a full TB with faster search read/write speeds
32gb 3200 mHz ram
There were newer CPU’s but that was the fastest hing Intel had at the time