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Forums - Sony Discussion - PS5: Evidence Points To Backward Compatibility [RUMOUR]

As others wrote, using again x86 architecture, BC is a lot easier to achieve. Using it the first time this gen gave a mix of pros and cons, easier to implement overall architecture, easy ports to and from PC, wider range of engines and dev tools, with probably the only con of larger die size compared to a RISC CPU or APU with the same performances using the same production process, using again x86 adds the aforementioned pro almost automatically, even without patents about it.
Choosing again x86 is a natural coice, as PS4 and XBOne used lightweight Jaguar CPU cores, so Zen2, or even better Zen3, will be able to offer a performance boost big enough for a new gen even in their lightweight implementations, while unless something changes, scaling up ARM architecture above performances and consumption mobile market typically requires would be probably more expensive, maybe it will become the viable choice if and when PC market will drop x86 and adopt it, it could happen later, but it's very unlikely it do it by the time MS and Sony start their next gen.



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thismeintiel said:
Bofferbrauer2 said:

Pretty well actually, all it needed was an emulator from a competent team (RPCS3), not what was available before. Most games actually run alot better than on the PS3 now

Maybe on a nice PC. But, you are not running a PS3 emulator on the PS4. The Jaguar CPU is just not powerful enough to emulate the Cell. 

I did on an Athlon II X4 630 with an R9 280X Graphichs card, so not very much above a PS4 in terms of power



From WSJ:

Speaking to a small group of reporters, Mr. Kodera said the network-services side of PlayStation is changing the way Sony thinks about product introductions.

“We need to depart from the traditional way of looking at the console life cycle,” he said. “We’re no longer in a time when you can think just about the console or just about the network like they’re two different things.”

What I take from Kodera's quote is that PSN is too big to be ignored and for the PS5 to not have BC. Resetting all the way from 0 won't be a good idea considering how important digital sales and subscriptions have become.



Aura7541 said:

From WSJ:

Speaking to a small group of reporters, Mr. Kodera said the network-services side of PlayStation is changing the way Sony thinks about product introductions.

“We need to depart from the traditional way of looking at the console life cycle,” he said. “We’re no longer in a time when you can think just about the console or just about the network like they’re two different things.”

What I take from Kodera's quote is that PSN is too big to be ignored and for the PS5 to not have BC. Resetting all the way from 0 won't be a good idea considering how important digital sales and subscriptions have become.

Good catch.  I think this makes PS1-PS3 B/C more plausible, since they are basically saying they have a ton of that stuff on the store, so it would be foolish to ignore it.



GribbleGrunger said:

I think it's the wise decision to make and so the most likely even without this evidence:

....

the one that is working on AMD Ryzen LLVM Compiler Improvements at Sony is also developing cross platform libraries.

https://www.phoronix.com/scan.php?page=news_item&px=Sony-LLVM-Ryzen-Improvements



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Not special
Sony talk about ps3 and ps2 bc and then we can talk



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thismeintiel said:
Bofferbrauer2 said:

Pretty well actually, all it needed was an emulator from a competent team (RPCS3), not what was available before. Most games actually run alot better than on the PS3 now

Maybe on a nice PC. But, you are not running a PS3 emulator on the PS4. The Jaguar CPU is just not powerful enough to emulate the Cell. 

I do agree with Pemalite when he says that Sony could make a SW emulation on PS4 for PS3, because they know the HW perfectly and would be able to make it happen but the cost to develop and lost sales of remasters aren't interesting for Sony.



duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"

http://gamrconnect.vgchartz.com/post.php?id=8808363

Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"

http://gamrconnect.vgchartz.com/post.php?id=9008994

Azzanation: "PS5 wouldn't sold out at launch without scalpers."

DonFerrari said:
thismeintiel said:

Maybe on a nice PC. But, you are not running a PS3 emulator on the PS4. The Jaguar CPU is just not powerful enough to emulate the Cell. 

I do agree with Pemalite when he says that Sony could make a SW emulation on PS4 for PS3, because they know the HW perfectly and would be able to make it happen but the cost to develop and lost sales of remasters aren't interesting for Sony.

I don't. I just have a hard time believing that the Jaguar CPU can effectively emulate the Cell. And definitely not well enough for all games to run as well as on the OG HW. Now, Ryzen? Sure. That should have no problem doing it. 



Heavenly_King said:
GribbleGrunger said:

I think it's the wise decision to make and so the most likely even without this evidence:

....

the one that is working on AMD Ryzen LLVM Compiler Improvements at Sony is also developing cross platform libraries.

https://www.phoronix.com/scan.php?page=news_item&px=Sony-LLVM-Ryzen-Improvements

Yep, could mean unified library, but I don't think that will be "free BC"



duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"

http://gamrconnect.vgchartz.com/post.php?id=8808363

Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"

http://gamrconnect.vgchartz.com/post.php?id=9008994

Azzanation: "PS5 wouldn't sold out at launch without scalpers."

thismeintiel said:
DonFerrari said:

I do agree with Pemalite when he says that Sony could make a SW emulation on PS4 for PS3, because they know the HW perfectly and would be able to make it happen but the cost to develop and lost sales of remasters aren't interesting for Sony.

I don't. I just have a hard time believing that the Jaguar CPU can effectively emulate the Cell. And definitely not well enough for all games to run as well as on the OG HW. Now, Ryzen? Sure. That should have no problem doing it. 

It isn't really Jaguar emulating Cell, but ok.



duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"

http://gamrconnect.vgchartz.com/post.php?id=8808363

Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"

http://gamrconnect.vgchartz.com/post.php?id=9008994

Azzanation: "PS5 wouldn't sold out at launch without scalpers."