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JEMC said:
I don't like the fact that all X570 boards will come with a fan. Those small fans have traditionally failed sooner than most desired, plus tend to do a lot of noise.

I'm surprised by the lack of a 16-core part, but they'll probably save it for Threadripper. Also, that both 3700 and 3800 have the same number of cores and only differ in clocks and TDP probably means that overclockers should go with the later.

I like that the entry parts have 6 cores.

I'm also surprised that Navi turns out to be a new architecture (with a lame name), but maybe it's because it's such a big refinement or improvement over other GCN parts that they to differentiate is somehow. In any case, we'll see if the claims they make are real of just PR talk.

I think they left the 16 core out for several reasons:

1. Not needed yet to counter Intel in some way, and previous gen Threadripper fills that niche nicely right now.

2. Limited volume of the 7nm Production at TSMC limits the amount of chips AMD can receive. Imagine AMD also running headlong into supply constrains just like Intel...

3. The Mainboards. It's probable that the early Mainboards were not totally to the task for more than 8 cores, so they take it slow to give the mainboard partners time to adapt their boards, drivers, and bioses.

Yeah, Navi will get interesting. Hence why I'm eager to see that PC gaming show on E3, as they announced more information on Navi there.

vivster said:
Why the fuck would mainboards need fans? That's what the case fans are for.

JEMC said:
^Because, apparently, the X570 chip uses between 10-15 watts and runs hot.

To be precise, the PCI-E4 chip alone consumes over 10W all the time. Hence why active cooling is needed: You can do with passive cooling if it spikes to that amount, but not if it's always sustained.

In other words, unless they get a Die shrink, all boards with a certain amount of PCI-E 4 Lanes needs active cooling of that chip. I could imagine the ones in Threadripper and Epyc actually going for 25-50W TDP with all their lanes.