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Finding a CPU Design Bug in the Xbox 360 (2018)

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Re: Finding a CPU Design Bug in the Xbox 360 (2018)

#12
post #9

Earlier quoted context omitted.

And there was the same problem with early PS3s, on Nvidia's GPU package...it was a fairly widespread problem at the time.

And Apple iBook G3s too. There's a whole thing with owners reflowing the GPU: https://www.instructables.com/Fixing-the-infamous-iBook-scre...

I seem to recall baking PC nvidia GPU boards in your oven was a reasonably common out-of-warranty fix around that era.

Re: Finding a CPU Design Bug in the Xbox 360 (2018)

#14
post #7

Earlier quoted context omitted.

Sounds like the 2012(?) Macbook Pro after the switch to leadless solder (?). I had to cook my motherboard 3 times in the oven to revive it.

Funny! I've heard that flash memory can also be revived with heat, either long duration or high intensity. https://www.extremetech.com/science/142096-self-healing-self...

Some macbook hacks involved disabling sleepmode, running a benchmark and putting it in a pile of blankets for a few hours

Re: Finding a CPU Design Bug in the Xbox 360 (2018)

#15
post #10

Earlier quoted context omitted.

And there was the same problem with early PS3s, on Nvidia's GPU package...it was a fairly widespread problem at the time.

I don't have any solid numbers on me, but I believe early 360s failing wasn't just widespread; it was straight up most of them dying within the first couple years. It's honestly insane they more or less got away with that. And I guess also speaks to how much Microsoft was killing it in that era that people were willing to go through multiple console RMAs (which I heard was a terrible, slow, and unreliable process) to…

Family got first gen 360. Still works to this day. We hit the jackpot with that console. It out lasted 2 wiis and a ps2

Re: Finding a CPU Design Bug in the Xbox 360 (2018)

#16
post #3

It is interesting that IBM dominated this generation of consoles, and was vanquished in the next. The high failure rates of the Xbox 360 did not help. https://en.wikipedia.org/wiki/Xbox_360_technical_problems

> It is interesting that IBM dominated this generation of consoles, and was vanquished in the next.

IBM's Power was the only logical option at the time.

These consoles were being designed around 2000. Intel and AMD weren't partnering on bespoke CPUs at that time. I don't even think AMD would have been considered a viable partner. Neither had viable 64 bit options and part of console marketing at the time was the ever increasing bit depths.

Prior console generations had use MIPS which wasn't keeping up with ever increasing performance expectations and players like Toshiba and Sony were looking for a higher performance CPU architecture. IBM's Power architecture was really the only option. Sony, Toshiba, and IBM partnered to develop their a new 64 bit microarchitecture called Cell.

Microsoft's first console was basically a PC and that's how everyone saw it. The 360 was an opportunity for Microsoft to show that it could compete with the big boys. It was also an opportunity to keep a toe dipped in RISC, because it had dropped support for RISC CPUs with Windows 2000.

Re: Finding a CPU Design Bug in the Xbox 360 (2018)

#18
post #10

Earlier quoted context omitted.

And there was the same problem with early PS3s, on Nvidia's GPU package...it was a fairly widespread problem at the time.

I don't have any solid numbers on me, but I believe early 360s failing wasn't just widespread; it was straight up most of them dying within the first couple years. It's honestly insane they more or less got away with that. And I guess also speaks to how much Microsoft was killing it in that era that people were willing to go through multiple console RMAs (which I heard was a terrible, slow, and unreliable process) to…

Whenever we lost a 360 we got a pre owned 360 from gamestop. I think they went for like $70 for one without any hdd.

Re: Finding a CPU Design Bug in the Xbox 360 (2018)

#20
post #3

It is interesting that IBM dominated this generation of consoles, and was vanquished in the next. The high failure rates of the Xbox 360 did not help. https://en.wikipedia.org/wiki/Xbox_360_technical_problems

> It is interesting that IBM dominated this generation of consoles, and was vanquished in the next. IBM's Power was the only logical option at the time. These consoles were being designed around 2000. Intel and AMD weren't partnering on bespoke CPUs at that time. I don't even think AMD would have been considered a viable partner. Neither had viable 64 bit options and part of console marketing at the time was the ever…

By the way, the AMD athlon 64-bit launched 2003. The PS3 launched in 2006. I had an AMD64 bit process in my laptop in 2005.

What wasn't viable?

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