I’m not familiar with HP. But with dell optiplex 3xxx, 5xxx, 7xxx tell you the class. Bigger number means more features, more premium build. The second to last digit tells you the generation. It’s 0-9 and then repeats. So 7020 is 1 year newer than 3010. 3040 is going to be the newest.
if you have the service tags just look them up on dell and you can see the detailed specs
I’m not familiar with HP. But with dell optiplex 3xxx, 5xxx, 7xxx tell you the class. Bigger number means more features, more premium build. The second to last digit tells you the generation. It’s 0-9 and then repeats. So 7020 is 1 year newer than 3010. 3040 is going to be the newest.
if you have the service tags just look them up on dell and you can see the detailed specs