New WD Red, and new WD Black, what's the difference?

While I'm waiting to see if the noise coming from my new WD Black game drive is normal, I thought I'd ask another question I had.

I got two hard drives, both on cyber monday. A WD Black WD4005FZBX 4tb 256MB cache internal drive for my games, and a WD Easystore 8tb external USB 3.0 drive for media and backups. Now, I'm told that easystore is actually a white labeled red, very shuckable for yonder NAS setups. It was just a great deal for me.

But the more I compare the two, the more it looks like the Red beats out the Black. I ran crystaldiskmark tests and checked some comparison sites and they both kind of indicated that the Red was actually the quicker drive. Now I'm not that good at interpreting these numbers in real world values but I'm wondering why I don't just return the Black and slap in the Red, if it'll do the job just as good or not better? Is there something I'm missing about this Black that puts it above? I can't find many head-to-head comparisons of the two in real world situations. It's all just "if you do this, then use this one" kinda stuff.

Can anyone who knows more explain a bit?

Attachments

: My WD Red(?) external USB 3.0 Easystore drive; easystore 8t.PNG (21.13 KiB) Viewed 4972 times

: My WD Black 4tb internal; wd 4tb BLACK 2.PNG (21.53 KiB) Viewed 4972 times