I have an idea, keep your PS4.

Rumors say the next Xbox and PS will be fully backwards compatible.

C'mon, in one hand they're suggesting people don't care BC. On the other hand they still sell old games.

Sony just released a device that plays PS1 games (badly). You can buy emulated PS2 games on PS4 and you can play PS3 games on PS Now. To be blunt, Sony is full of shit and downplayed BC because emulating PS3's CPU is difficult/impossible with the PS4's CPU. Emulating the 360 was easier because the CPU was more common tech and less capable.

MS and Nintendo say dumb shit as well. Simply try to decipher why they say it.

Microsoft, Sony and Nintendo all have differing agreements in place with games released on their platforms. - Agreements with potentially different stipulations.
Microsoft might not legally be able to provide backwards compatibility and thus require permission from each individual developer... Whilst Sony might have a different agreement in-place that sidesteps that entirely.

There might be different agreements in place.

Backwards compatibility can still break despite the hardware still being x86+AMD. - Lots has actually changed since 2013, especially on the CPU side.

Depends on console, depends on agreements in place.

People said it was impossible for the Xbox 360 to be emulated on the Xbox One and I always argued the opposite.
Same with the Playstation 3, I think it is entirely possible to emulate that console on the Playstation 4.

I think people need to go out and actually research all the fundamental ways that backwards compatibility can be achieved, Microsoft for instance takes a very interesting approach on the Xbox One.

I mean shit. On the PC, the Playstation 3 Emulator is better than the Xbox 360 Emulator, so much for Cell being a hindrance?

Besides, because of the core counts of the 7th gen consoles... It's actually made emulation easier as games tend to have less of a reliance on timing.

Well. No. The Architecture of the hardware will not be the same.

Well based on the Vita, Sony does need permission to give people access to games they already own digitally for PSP and PS1. Again, it seems to be the digital aspect that has complicated BC.

I dont know much about the PS3 emulator on PC, but I imagine it takes a CPU much capable than what PS4 has. Its the CPU where BC on X1 also struggles. Which is why Crysis nose dives in frame rate even on a X1X.

I think the impression is specs will be similar enough to just run natively kinda like how PC does. Except PC isnt 100% compatibility with new specs and you can run into even bigger problems by running a new version of Windows. Either way, I imagine these are obsticles they're currently looking at.

Don't quote me on this, but I believe the reason not all Xbox and Xbox 360 games are available is because they still need some work, and Microsoft simply doesn't have the legal rights to do so without the permission of the relevant parties.
With the PS5 and Scarlett this shouldn't be a problem, I fully expect that everything which runs on the PS4 (PS4 games, VR games and PS2 games) run on PS5 day one, and the same with the Scarlett and everything which runs on XB1 (XB1 games and the select Xbox and X360 games).

In the history of all Emulation efforts... You always need more CPU than the original hardware, goes for even the Xbox 360 Emulator.
The Playstation 3 Emulator tends to be superior than the Xbox 360 Emulator... Even in regards to hardware requirements, so much for the power of the Cell being a hindrance.

But Microsoft isn't doing 100% pure emulation anyway, so the issue is entirely moot.  - The Cell simply isn't a powerful CPU.

Crysis will get patched in time... Halo: Reach ran like a dogs breakfast for ages even on the Xbox One X before things were patched up... Takes them a few goes to get a hang of the idiosyncrasies of an engine.

Rarely happens.
And any modern PC can retain 100% backwards compatibility with all software made anyway.

I think you're comparing the PC emulators, which isn't a fair comparison because that isn't equal optimization. I'm simply pointing out you still need a powerful CPU to make PS3 emulator run well on a PC. Hence, I'm reluctant to believe PS4's CPU can emulate the PS3 well.

Xbox 360 BC started rough, improved significantly, but still has limitations likely due to the hardware. Not every game is a locked 30 or 60 fps. Halo: Reach was a fairly early BC release and the biggest issue was frame pacing. It really feels like BC performance has hit a wall and I don't believe Crysis is gonna see much improvement in performance.

Not sure you are understanding anything... So I will try another method.

Why do you think the PS4 is unable to emulate the PS3 well?

If they decreased accuracy they can increase performance.
A SNES Emulator with 100% accuracy can bring down even the fastest CPU's today.

I think you need to take look at how Microsoft is actually achieving backwards compatibility though. - It's not pure emulation.

Don't console makers give devs access to their systems below a given level only through their APIs and standard libraries? This should give them enough knowledge and instruments to make a translation layer. Anyhow, PC and Android show us that if a new architecture is an evolution of the previous one, BC becomes far easier.
I have Win 7 on my PC, and I often play much older games on it, sometimes I had problems with old, ill-behaved DRMs, other times I had to get, usually from GOG, a new, tweaked setup to install them properly, but I rarely had problems with graphics, and in this case, most of the times it was just that the game offered a limited selection of possible resolutions, none of which looking good on new monitors, and even in this case I always found tweaks that solved the problem.