| Netyaroze said: 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 ???? |
Sigh....
An R9 290x has 40 compute units, each compute unit is made up of 64 shader cores, as I'm sure you know. The PS4 has 20 CUs. A "good" 290x chip will have all 40 of those compute units working. A "good" PS4 chip requires only 18 of its 20 cores working.
If AMD/Nvidia pay let's just say $10k for a wafer that has 100 chips on it, and expect that 1 in every 10 chips is probably defective, then they are efeectively paying for just 90. And if 3 in every 10 are bad then they are paying the same $10k but now for only 70 chips. Sony circumvents this problem because out of those 100 chips on that wafer, Sony will be able to use practically every single one, cause even if a chip is defective that defect will most likely not affect more than one CU or at worst two of them. simply meaning they can meet a higher yield. And also that they can move onto new fabrication processes faster. Don't know how else to explain his to you.
But let's just agree to disagree and see what happens in 12-18 months.
