Sep 15 2020, 04:24 PM
QUOTE(SSJBen @ Sep 15 2020, 03:44 PM)
I don't know why you guys are paranoid over early units.
Simply saying SoC doesn't mean jack shit. The console has several SoCs in it. The CPU, GPU and memory controller is on its own SoC. The audio and video output is on another, the network is on another, the I/O is also on another. This is basic 101 embedded system design that they teach you on the first year of computer science.
So the report saying "SoC", okay which one lol?
50% yield may sound low. But you gotta understand the scale of manufacturing before you put that number into perspective. 50% of what?
As for chances of getting a "lemon" is pretty high, that's... putting it in a very simplistic manner. If the part is passed under QC, it'll work. An SoC in its own doesn't just stop working. If it stops working, the problem would be related to the internal circuits connecting the SoC to another part of the system. The SoC doesn't just fail, which is to say the problem would be elsewhere and has almost nothing to do with low yield rate.
People get paranoid when they hear about low yields and then jump to conclusion thinking Sony would just pass all parts even though they borderline passed the QC. Let's put it this way, majority of consumer CPUs and GPUs are actually flawed yields since the dawn of microprocessors. This is more so in consoles as their production is massive. There is no "fresh cut" off the wafer, it's always the flawed ones that gets cut, then partly disabled for further headroom of success.
That gematsu article is click bait as far as I'm concern. Nevermind, gematsu article is indeed stupid.
EDIT Welp, I went and actually read proper report from Bloomberg which took their source from TSMC. So the SoC yield problem in question is for the CPU and GPU.
This is normal because TSMC hasn't had very high yield rates for 7nm since Zen 2 launch. Do you see people complaining about Ryzen 3000 CPUs failing? Do you see people complaining about the Navi, 5000 series GPUs killing themselves?
Quick short answer - No.
Stop worrying over nothing.
Lesser people buy, higher chances for other people like me to get one unit Simply saying SoC doesn't mean jack shit. The console has several SoCs in it. The CPU, GPU and memory controller is on its own SoC. The audio and video output is on another, the network is on another, the I/O is also on another. This is basic 101 embedded system design that they teach you on the first year of computer science.
50% yield may sound low. But you gotta understand the scale of manufacturing before you put that number into perspective. 50% of what?
As for chances of getting a "lemon" is pretty high, that's... putting it in a very simplistic manner. If the part is passed under QC, it'll work. An SoC in its own doesn't just stop working. If it stops working, the problem would be related to the internal circuits connecting the SoC to another part of the system. The SoC doesn't just fail, which is to say the problem would be elsewhere and has almost nothing to do with low yield rate.
People get paranoid when they hear about low yields and then jump to conclusion thinking Sony would just pass all parts even though they borderline passed the QC. Let's put it this way, majority of consumer CPUs and GPUs are actually flawed yields since the dawn of microprocessors. This is more so in consoles as their production is massive. There is no "fresh cut" off the wafer, it's always the flawed ones that gets cut, then partly disabled for further headroom of success.
EDIT Welp, I went and actually read proper report from Bloomberg which took their source from TSMC. So the SoC yield problem in question is for the CPU and GPU.
This is normal because TSMC hasn't had very high yield rates for 7nm since Zen 2 launch. Do you see people complaining about Ryzen 3000 CPUs failing? Do you see people complaining about the Navi, 5000 series GPUs killing themselves?
Quick short answer - No.
Stop worrying over nothing.
Been using PS4 first gen since it launched. Didn't have any major issue considering I performed proper maintenance on the unit.
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