Possible PS4 slim leaked (Fake)

[Netyaroze]

Intrinsic said:

Netyaroze said:

I read that ages ago and I think you are accusing me of not knowing but you have no clue yourself.

The problem with high powered GPUs is that the electron leakage is a bigger problem because more electrons have to be go through the thin circuitry, and they are bigger meaning a bigger piece of the waver has to be perfect. With lower performing smaller chips its more forgiving. The yields for 20nm high performance chips were abysmal and offered no costadvantage. Which is why Nvidia was disatsified with the Node. TSMC was incapable of delievering enough perfect big chips. making it too costly for Nvida and AMD to jump to 20nm. The phone industry doesnt need big chips so they could live with the process quality. before we dont see AMD and NVIDIA with 20nm gpus there is no way we see a shrink for PS4/Xbox one they have even less room to unload the additional costs to their  customers (exactly zero room) so they will be last on the 20nm Node. Its logical. Before there is no GTX 1080 we wont get a Slim PS4/Xbox one (atleast none with a 20nm APU).

 

You can read up about it on the known forums let someone that knows more then me explain you the difference between high and low performance chips and the consequences. I have googled for you http://techsoda.com/no-20nm-graphics-amd-nvidia/ you can read this first if you want. You are welcome.

ok, take two chips for instance. one is 28nm, and one is 20nm. there is about a 50% size reduction between the two. Now if the two chips, having the exact same number of transistors are fabbed on the exact same sized wafer, the you simply will be able to put more of the 20nm chips on the wafer, and be able to run at a higher clock because since the chip needs less power to run, it will generate less heat. 

Now these lower power chips you keep mentioning, the important thing about those chips are their size. The PS4 apu for instance is ~350mm/sq. A GPU like say the R9 290 is around 380mm/sq. All GPU. A smartphone processor is around 60mm/sq. mind you, that processor is a SOC. Remember, smaller the processor size, less power they need, less heat generated. 

Now back to the PS4. in any fabrication process, yields are always a problem, and the more mature the fabrication gets, the higher the yields. This is important cause OEMs don't pay for individual chips per say, they pay for a wafer. If yields are low, they get less for their money. With smart phones, this isn't a problem cause the chips are so small that its pretty hard to get faulty chips and of course the required volume is massive. With the PS4 certain steps were taken to ensure a rapid uptake to newer fabrication processes.

They disabled 2  of the 20 cores in the GPU. Bear in mind, they PS4 (and XB1 for that matter) was built on a very mature fabrication process (28nm) so yields for the PS4 in particular (since they don't have to worry about putting SRAM on die) are extremely high. Disabling 2 cores is a luxury they can afford to ensure that when the next fab process comes alomg , even with defective chips, they can still make the most out of their purchased wafers. 

Wafers are sold at a near fixed price, fabrication size determines how many chips you get on each wafer, fabrication maturity determines how many of those chips are actually good. GPUs growth is based on putting more and more transistors into a near fixed die size, the size of their dies don't get smaller, they fan process does and they just put more stuff in there. The PS4 circumvents all these fabrication issues by disabling some of its GPU cores. that is why they can jump onto a new fabrication process before it becomes mature. a lesson the learnt  from the ps3 time. 

No thats just false the PS4 is a high performance chip the APU is big and needs alot of power its wy bigger then phone chips. Just because they disabled 2 of the Compute Units doesnt mean the PS4 chips is not a high performance Chip. Which currently are ZERO on the 20nm node. All you told me I already knew. What exactly are you trying to argue here ? That miraculously the PS4 APU can be produced cost efficently on 20nm while all other Products can not ????