Spencer suggests Scorpio will cost not more than $600 USD

[Pemalite]

shikamaru317 said:

1. That is guessing on my part, based on the 6 teraflop specs. Only other thing it could be is the lowest end Vega chip which is set to replace RX 480 next year in the mid $200 range, but I can't see MS using it, it'll be practically brand new when Scorpio begins manufacturing and therefore probably pretty expensive. Considering they can hit 6 teraflops by overclocking the cheaper RX 480 I'm sure they'll go that route instead. But if they do decide to use the lowest end Vega chip it should mean better performance, RX 480 overclocking gains aren't exactly huge.

Graphics Core Next is extremely modular, it might not be any of them.
AMD builds their GPU's in "Blocks" and Microsoft can choose how many blocks it wants.

And just because you can take a smaller chip and scale up the clocks, doesn't mean it's cheaper than building a larger chip at a lower clock, for one you need more voltages so you can have more workable chips, which means electromigration can become an issue.
There is so much more to fabrication you haven't even bothered to touch upon.

And really, no one has any idea what the chip is or how fast it is.

shikamaru317 said:

2. Guess you're right there, it could use something other than Jaguar or Zen, there are other options. It's rumored that it's not using Zen in fact, and I doubt they'll use Jaguar because there will be CPU bottlenecks if they do (we've already seen some CPU bottlenecks on PS4 Pro and Scorpio is designed to run native 4K unlike PS4 Pro). Some low power Excavator cores such as the type used in Bristol Ridge E APU's would be the perfect middle ground between PS4 Pro's overclocked Jaguar and Zen imo. 8 low power Excavator cores at say 2.6 ghz should offer a significant CPU improvement over the 2.1ghz Jaguar cores in PS4 Pro, while offering up a fairly low TDP.

You are forgetting the successors to Jaguar. Aka. Puma and Puma+
Excavator will not happen, it will drive up the chips die-size far to much.

shikamaru317 said:

3. Just guessing on my part again. I'm fairly sure that you can't hit 320 GB/s on GDDR5, but I could be wrong about that. I was under the impression that Samsung only managed to hit 256 GB/s on GDDR5 by dropping to 20 nm last year and that there haven't been any further GDDR5 improvements since then. If they can manage 320 GB/s on GDDR5 thoug, they should because GDDR5 is cheaper.

Bandwidth in this instance is derived from Memory Clock x Memory Interface / 8 x 2.

You can achieve 320GB/s of bandwidth even with DDR1 Ram, you just need a wider bus which means you use more memory chips.

shikamaru317 said:

4. If they can manage to do 4K bluray with a firmware update on a PC blu-ray drive that would be amazing.. I think they could get some PC blu-ray drives for like $30 since they buy in bulk.

They can and they have on the PC. I have already provided links to the firmware and various whitepapers in another thread. (If you feel like looking through my posting history, go right ahead.)