(Update) Rumor: PlayStation 5 will be using Navi 9 (more powerful than Navi 10), new update Jason Schreier said Sony aim more then 10,7 Teraflop

[Bofferbrauer2]

HollyGamer said:

Bofferbrauer2 said:

GCN is limited to 64 CU, so the only way to get Navi faster than that is to clock it faster. To reach 14TFlops almost 2Ghz would be needed, way too much for GCN.

Radeon VII is able to beat the Vega 64, but for this you would need a chip that beats Vega VII while just consuming less then half of it. That's just not feasible short of a wonder on Navi.

And don't worry, I took chip prices in the next year into account when I said it's going to cost twice those 500$ in production. CPU/GPU ( possibly combined in an APU, but I doubt it) alone will not come cheap as their footprint is much higher than on this Gen. The larger the chip, the higher the price, exponentially so in fact. An APU with Zen2 and Navi with 64 CU will be at least around 500mm² in 7nm, way too expensive to sell for under 400$ a chip (in 2 separate chips a somewhat lower price is possible to get). The APU in the PS4 and the Pro is only around 250mm2, so just one quarter of the size (don't forget it's squared) that the chip in the leak would take, in fact the GPU alone would be larger than that.

Add to this 24GB not-yet-released (and thus more expensive, at least early on) GDDR6 Memory (GDDR6 is based on DDR4 btw), even with the dropping memory prices that will be around another 100$ for sure early on. Add all the other components, assembly and shipping, and you're getting close to 1000$ even without paying consumer prices.

GCN  CU are not limited to 64, but Stream processor does (current one is 64 rop's) and it might change (double it in Navi ) or even if it's not they can just  added more CU (scalability ). 

GCN CU are depend on how much chip size they want to put on it while keep it cost and TDP down. Remember with 7nm node it will double down the amount of nodes on the same chip size (PS4 to PS4 pro able to double size the amount of CU) 

So PS5 might able to have double the amount of CU on the same size as PS4 pro chip (polaris) or double the amount clock speed of the maximum clock speed of polaris chip.

The price of APU i want you watch Jim from Adored TV channel on Youtube https://www.youtube.com/watch?v=qgvVXGWJSiE&t=810s

GDDR 6 base price will be different, depend on how much Sony ordered , ( we are talking about a sum size amount of GDDR 6 unit not just a thousand unit) for 5 to 6 years PS5 production . The same thing happen with GDDR5 , it's very expensive but the price is more cheaper because it's a different kind price and deal. 

Not that I'm aware of.

A Vega 64 has 64 ROPs that's true, along with 4096 Unified Shaders, 256 TMU and organized into 64 CU. I think remembering the actual limit comes from the Shader logic limiting those to 4096, but due to how it's organized that results into 64 CU, while the ROPs could be increased. Hence why there are rumors about an increased number of ROPs in Navi but no increase in CU.

14nm to 7nm doesn't half the size, even though the naming scheme implies it. But those names are decoupled from the actual sized since over 15 years now (since they got smaller than the wavelength of the visible light, which is around 300nm in fact). Vega VII has almost the same amount of transistors as a Vega 64 but is actually only 32% smaller. I calculated the 500mm² by taking the Vega VII plus 65% of the size of a Zen Cpu, which would be 456mm². But to reach those 14TFlops, Navi would need quite a few extra functions, so I added 10% to give space for those, which results in 500mm².

PS4 Pro chip is about the same size as the original PS4 chip, which is about 350mm². A Vega VII, which is produced in 7nm, is already is 331mm². How do you want to reach that power in a ~350mm² package if 95% is already occupied by the GPU - and that GPU isn't even strong enough for the leak. While Navi could be more powerful, it will need more transistors, and thus die space, for that. Getting that much power out of such a small chip is pretty much impossible with the 7nm process.

I do often watch AdoredTV (I love AMD and all my desktop PCs had AMD CPU except one (the original Pentium MMX, as AMD had nothing to counter that. I had an AM286, AM486 DX-40, K6-II, Athlon 64 3000+ (sadly only on 754 board, so I couldn't upgrade without a new board) and finally an Athlon X4 635), but I don't believe his prices. They would not unly undercut Intel's CPUs by an unreasonable large margin, but also undercut their own chips by a large margin, which doesn't make sense. They wouldn't be able to sell any of their older chips anymore unless they cut the prices by over 60% in some cases, which is insane. AMD would ruin themselves with those prices, so don't expect AMD to practically give their chips away.