4 ms·

Well, I may be wrong, but I was under the impression that the Unreal Engine will also work on the next XBOX (and any PC) and that the PS5 was less powerfull tha

Well, I may be wrong, but I was under the impression that the Unreal Engine will also work on the next XBOX (and any PC) and that the PS5 was less powerfull than the next XBOX.

ksec 6y ago
Yes, it isn't specific to PS5. I was only mentioning PS5 because it is not the most powerful machine of all and we are already capable of that.
skohan 6y ago
It remains to be seen how the PS5 and the new XBox compare in terms of performance. The specs of the new XBox are slightly higher on paper, but the PS5 is doing some really interesting things in terms of optimization. Basically the XBox is going for high constant clock speeds, and the PS5 is shifting priority between the CPU and GPU components of the SOC so each gets boosted performance when it's most relevant. Both consoles are doing very interesting things with asset streaming and decompression of assets directly from the SSD to video memory which are going to open up new opportunities not only in visual quality, but in terms of how flexibly game worlds can be designed. Probably we will have to wait and see how all of this plays out in terms of real-world performance.
- rowanG077 6y ago
  Highly dangerous of the PS people to build non-deterministic performance into their console. Developers who try to push every ounce of power out of it will hate it. edit: Maybe deterministic isn't the correct word. What I mean is that you can design a physics system that you can ensure runs on the PS5 CPU. But then the graphics boys make an upgrade and suddenly some power is diverted to the graphics and the physics system is no longer working correctly. This is still deterministic. But a nightmare to work with when optimizing for hard-real time requirements. The only way this can be done sanely is if the developers can fix this power budget and thus restore "determinism".
  - didibus 6y ago
    It sounded like they managed to make it deterministic by keeping the power draw always the same and fixing the cooling solution to handle max load. So developer can expect it to perform identical to whatever balance they've set between CPU/GPU. That's my understanding at least.
    - rowanG077 6y ago
      If the developer can control the balance then it's fine. If this balance cannot be controlled by the developers then it's a nightmare. It's not clear to me this is developer controlled.
  - iMark 6y ago
    Mark Cerny's tech talk emphasised that performance is determistic: 'So how does boost work in this case? Put simply, the PlayStation 5 is given a set power budget tied to the thermal limits of the cooling assembly. "It's a completely different paradigm," says Cerny. "Rather than running at constant frequency and letting the power vary based on the workload, we run at essentially constant power and let the frequency vary based on the workload."' https://www.eurogamer.net/articles/digitalfoundry-2020-playstation-5-specs-and-tech-that-deliver-sonys-next-gen-vision https://www.eurogamer.net/articles/digitalfoundry-2020-plays...
    - rowanG077 6y ago
      It's clear from the presentation that it's not possible to run the CPU at full power and the GPU at full power at once. This means the CPU will be stealing performance from the GPU or vice versa when the system is pushed to it's limits. This means the things you can graphically do are directly connected to how much the CPU is loaded. This will be very hard to optimize for. Since seemingly unconnected physical pieces of hardware are influencing eachother. The only way I can see this going well if this balance is fixed by the developer. E.g. the developer specifies I want 60% of the power budget to go to the GPU and 40% to the CPU. If this is handled dynamically by the PS5... oh boy.
deleted 6y ago
[deleted]
ingenieros 6y ago
"As for Microsoft’s Xbox Series X, Sweeney isn’t saying the new Xbox won’t be able to achieve something similar; both are using custom SSDs that promise blazing speeds. But he says Epic’s strong relationship with Sony means the company is working more closely with the PlayStation creator than it does with Microsoft on this specific area."
- rasz 6y ago
  That just means they got paid to say it.

Well, I may be wrong, but I was under the impression that the Unreal Engine will also work on the next XBOX (and any PC) and that the PS5 was less powerfull than the next XBOX.

ksec 6y ago

Yes, it isn't specific to PS5. I was only mentioning PS5 because it is not the most powerful machine of all and we are already capable of that.

skohan 6y ago

It remains to be seen how the PS5 and the new XBox compare in terms of performance. The specs of the new XBox are slightly higher on paper, but the PS5 is doing some really interesting things in terms of optimization. Basically the XBox is going for high constant clock speeds, and the PS5 is shifting priority between the CPU and GPU components of the SOC so each gets boosted performance when it's most relevant. Both consoles are doing very interesting things with asset streaming and decompression of assets directly from the SSD to video memory which are going to open up new opportunities not only in visual quality, but in terms of how flexibly game worlds can be designed. Probably we will have to wait and see how all of this plays out in terms of real-world performance.

rowanG077 6y ago
Highly dangerous of the PS people to build non-deterministic performance into their console. Developers who try to push every ounce of power out of it will hate it. edit: Maybe deterministic isn't the correct word. What I mean is that you can design a physics system that you can ensure runs on the PS5 CPU. But then the graphics boys make an upgrade and suddenly some power is diverted to the graphics and the physics system is no longer working correctly. This is still deterministic. But a nightmare to work with when optimizing for hard-real time requirements. The only way this can be done sanely is if the developers can fix this power budget and thus restore "determinism".
- didibus 6y ago
  It sounded like they managed to make it deterministic by keeping the power draw always the same and fixing the cooling solution to handle max load. So developer can expect it to perform identical to whatever balance they've set between CPU/GPU. That's my understanding at least.
  - rowanG077 6y ago
    If the developer can control the balance then it's fine. If this balance cannot be controlled by the developers then it's a nightmare. It's not clear to me this is developer controlled.
- iMark 6y ago
  Mark Cerny's tech talk emphasised that performance is determistic: 'So how does boost work in this case? Put simply, the PlayStation 5 is given a set power budget tied to the thermal limits of the cooling assembly. "It's a completely different paradigm," says Cerny. "Rather than running at constant frequency and letting the power vary based on the workload, we run at essentially constant power and let the frequency vary based on the workload."' https://www.eurogamer.net/articles/digitalfoundry-2020-playstation-5-specs-and-tech-that-deliver-sonys-next-gen-vision https://www.eurogamer.net/articles/digitalfoundry-2020-plays...
  - rowanG077 6y ago
    It's clear from the presentation that it's not possible to run the CPU at full power and the GPU at full power at once. This means the CPU will be stealing performance from the GPU or vice versa when the system is pushed to it's limits. This means the things you can graphically do are directly connected to how much the CPU is loaded. This will be very hard to optimize for. Since seemingly unconnected physical pieces of hardware are influencing eachother. The only way I can see this going well if this balance is fixed by the developer. E.g. the developer specifies I want 60% of the power budget to go to the GPU and 40% to the CPU. If this is handled dynamically by the PS5... oh boy.

deleted 6y ago

[deleted]

ingenieros 6y ago

"As for Microsoft’s Xbox Series X, Sweeney isn’t saying the new Xbox won’t be able to achieve something similar; both are using custom SSDs that promise blazing speeds. But he says Epic’s strong relationship with Sony means the company is working more closely with the PlayStation creator than it does with Microsoft on this specific area."

rasz 6y ago
That just means they got paid to say it.