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PS5 ROM keys leaked
- Thread starter 3liteDragon
- Start date
Agent_4Seven
Tears of Nintendo
If that's the case, then they should contact Sony and share their knowlage after they're done with the challenge
Sand Dan Glokta
Member
Question: The leaked keys are for PS5, Slim, Pro, or all of them?
3liteDragon
Member
adamsapple
Or is it just one of Phil's balls in my throat?
Guardian Monkey
Member
Even if we had the ability to load Steam OS, wouldn't 16/18pro GB of total ram be an issue? Seeing that a lot of people are having issues with the steam machine 16 and 8GB split?
Sand Dan Glokta
Member
Its plenty to run 99% of games on steam
You have over 5GB more for gaming and higher memory bandwidth on both the PS5 and PS5 pro. So games would run better than on the steam machine
Ellis
Member
Brings me back that name. I remember he did a song saying he got buttfucked by Sony, and later took a very high profile job at one of the big tech giants. If memory serves me correct.
Guardian Monkey
Member
How is 24GB total of the Steam Machine, 5 GB less than 16 GB on the PS5? The PS5 has to share the 16GB between video/cpu/OS. We also can't assume how it will work other than what we have seen in the handheld space that uses unified memory pool as well. Yes the RAM is faster but still can't see how that would make it any better than the 24GB of the Steam Machine. I understand it could run most games fine, it seems like it could be an issue in running some ps5 games vs the pc counterparts due to optimization. I guess we have to see what happens…
Mownoc
Member
Installing Steam OS on a PS5 if it were possible wouldn't be worth it for most games. The Native PS5 version is obviously going to run far better and yes the memory is far from ideal. Most games will still be able to run at least.
This video will give you a good idea how games would run though. PS5 APU's with manufacturing issues were repurposed into the AMD BC-250 which is the PS5 APU but with 6c/12t CPU instead of 8c/16t and 24CU GPU instead of 36CU. Obviously the PS5 without the disabled CPU/GPU cores would do a bit better, but it has the same 16gb GDDR6.
I see very little point in installing SteamOS on an actual PS5 though.
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Guardian Monkey
Member
Ok thanks! I'll look into this.
No chance.
According to Valve, 70% of Steam players have hardware that is less powerful than the Steam Machine.
And since the Steam Machine is less powerful than a PS5...
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TrebleShot
Member
Okay this will maybe make Sony pull their finger out for GT7 and Demons Souls on PC.
Other than that it's not very exciting. Imagine it will be patched very soon.
They had a really good stretch with no hacks.
I can only imagine running roms on the ps5 being a nightmare every game update you'd have to manually download it and it probably would bork your hack.
Other than that it's not very exciting. Imagine it will be patched very soon.
They had a really good stretch with no hacks.
I can only imagine running roms on the ps5 being a nightmare every game update you'd have to manually download it and it probably would bork your hack.
ReyBrujo
Member
If that's the case, then they should contact Sony and share their knowlage after they're done with the challenge
lol, they don't need to, sometimes the companies contact them to friendly remind them to never try again like Nintendo did with the Yuzu and Ryujinx folks.
For gaming you wont see better performance from the Steam Machine than the PS5 or PS5 pro because of these 4 reasons:
1.) The GPU doesnt have enough memory for higher quality textures and other assets. Its 8GB of VRAM, vs 12.5-13.7GB of memory dedicated to gaming on the PS5 and PS5 pro so thats between 4.5-5.7GB more for gaming which is the workload you're describing.
2.) It doesn't have enough memory bandwidth with a 128 bit bus and 288GB/s vs the 476GB/s and 576GB/s on the PS5 and PS5 pro.
3.) Steam Machine has a 7600M GPU with 28 CUs, that GPU has been tested extensively for gaming and isnt even as good as the 5700XT which the PS5 GPU is based on and the PS5 GPU is like 8% more powerful than the 5700xt. So base PS5 is like 15% more powerful for gaming than the Steam Machine.
4.) The CPUs are roughly equivalent for gaming workloads. You get more hw/sw threads on the PS5/pro CPU and you get better single threaded performance on the Steam Machine CPU but fewer cores.
The 16GB of DDR5 is primarily for general purpose computing tasks within Steam OS as you can see from the ads. If a game runs on the DDR5 memory it will be bandwidth starved. As well with the current memory price hikes dont be so sure the Steam Machine will launch with the 16GB of DDR5, it may launch with only 8GB. But even then it has a weaker GPU than the base PS5 with lower memory and memory bandwidth. The only thing it really has over the PS5 and PS5 pro is single threaded performance on the CPU and higher clocks which will make it better for general purpose PC tasks. Then finally it has better hw acceleration for ML/AI than the base PS5 but not the PS5 pro, so if it got FSR support it could run games similarly to the base PS5 despite the weaker overall hw.
So in conclusion the Steam machine is an excellent machine built to be about 6x more powerful than the Steam Deck thats the benchmark they used not the base PS5.
Because your CPU load the data from SSD, copy and decompress to your RAM and after copy to VRAM from RAM. So 8GB of general RAM from your 16GB are used at swap memory. Also in current games 85 to 90% memory used is for GPU, so PS5 have better memory pool for games than Steam machine
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The guy you are talking to is the user that went by the name of "xbox 360". He's rebranded himself to a "PC boy" called Deficit much like "xbox" did. He's still very much an xbox warrior who goes around calling others sony fanboys.
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winjer
Gold Member
8Gb of vram will be a limiting factor for the Steam Machine, but it can get some data from system memory.
The question is how many PCIe lanes will it have. The 7600 has only 8 lanes in Gen4. But Kelpler said it will probably only have 4. If he is right, then it's going to be a big bottleneck.
The PS5 has do split it's memory bandwidth between the CPU and GPU. And that also means inefficiencies due to bandwidth contention.
On the other hand, the Steam Machine has a dedicated pool for the CPU and another for the GPU. So those 288GB/s are only for the GPU and there are no issues with bandwidth contention.
The 7600 also has more advanced memory controller and data compression than RDNA2. And more important, it has 32MB of L3 cache. This cache has a hit rate of around 30%, so it's like having 370GB/s, which is on par with what the PS5 GPU has.
IPC is always better for gaming than core count. A 4 core 8 thread Zen4 CPU, with full cache, will be much better than the Zen2 6 core 12 threads, with only 4+4MB of L3 cache, of the PS5.
The 16Gb of the Steam Machine is for the CPU. Games don't just run on DDR5.
Data on the CPU will use DDR5 and data on the GPU will use GDDR6.
Sethbacca
Member
You do realize most of us own pcs too right? Especially anyone that is going to be capable of following directions to enable homebrew/emulation/etc features should they become available. You're fantasizing about a world that already exists while imagining you're living in one that doesn't.
genesisblock
Member
What a great start to a new year. A potential jailbroken PS5.
From the tests I've seen empirically GPU getting data from system memory is a major bottleneck in performance because of the lower memory bandwidth.
Empirically memory bandwidth contention hasnt been an issue. Its actually better for the CPU and GPU to have unified memory since there is less duplication of data and benefits from temporal and spatial locality. PS5 with 488GB/s even with memory bandwidth contention you'd still have more memory bandwidth than what the Steam Machine gets from both the VRAM and system memory combined(288 and ~89) and even then whatever the CPU is pulling from system memory for gaming is running at 89GB/s while on the PS5 anything the CPU is pulling from the memory running at 488GB/s. Also dont think it would be fair to equate 32MB of L3 cache as equivalent to 370GB/s in empirical performance. RX 7600 which is a desktop version of the Steam Machine GPU and better has L3 cache as well and even more CUs than the Steam Machine GPU(7600M) and it doesnt perform as well nor record memory bandwidth above 300GB/s. You can correct me if I'm wrong this is just off the top of my head. Maybe I got something wrong.
Largely agree with this.
Largely agree with this but the extra threads will be useful in games where multithreading code is used like game engines used by Rockstar games, Onrush/Ego, Decima, Naughty Dog. So yes most games you want better single threaded performance but with these system sellers it will be more hw threads that matter. I could be wrong though but I largely agree with you on this point. You get 4Ghz clockspeed on 4 cores with 2 hw threads on the Steam Machine CPU, so its better at single threaded performance than the 6.5 cores you get with the PS5 at 3.5Ghz on Zen 2.
winjer
Gold Member
It is, due to latency and bandwidth. But, depending on the PCIe lanes and generation, it can fetch a decent amount of data.
Contention of memory bandwidth is a problem is having one single pool, accesses by the CPU and the GPU. It's just a fact that even Sony has addressed in their presentations of consoles.
PC has some duplication of data, between pools, but it's not that big of a deal. The real problem with having 2 pools of memory is going through the PCIe bus.
Yes, 32Mb of L3 cache helps a lot with reducing memory accesses. Around 30% at 4K, Around 45% at 1440p and around 55% at 1080p.
This is AMD's own data. And was also corroborated by nvidia, when they started using a big L2 cache as well.
So in practical terms the APU in the Steam Machine will have as much bandwidth as the PS5. And it will have the advantage of lower latency for anything that hits the L3 on the GPU.
The CPU on the Steam machine is a Zen4 CPU. And this has huge advantages to the Zen2 CPU on the PS5.
One is IPC, due to 2 generations of improvements. The other is that Zen4 is a monolithic CPU. While the Zen2 on the PS5 is a 4+4 core CPU, so when data has to be shared across the 2 core complexes, there is a big performance hit.
The Zen4 CPU on the Steam deck probably has the full 32MB of L3 cache. While the PS5 only has 4Mb+4MB.
Worst yet, the PS5 CPU has to deal with high latency GDDR6, that hovers at around 140ns. The Zen4 CPU will deal with DDR5 with a latency of around 70ns.
So the CPU on the PS5 not only will have a lot more cache misses, due to having much less cache and having an older CPU front-end, but when it has to go to system memory it takes a bigger performance hit due to high latency.
The other problem is that the CPU on the PS5 runs with a max clock speed of 3.5Ghz. While the CPU on the Steam machine has a boost of up to 4.8Ghz. That is another 37% deficit, on top of the IPC.
The CPU on the Steam Machine is even more complicated than that. From the specs, and TDP it's very likely or a custom variant of a Ryzen 5 8540U. While having 6 cores, it has 2 full Zen 4 cores and 4 Zen 4C cores. AMD's design is completely different from Intel's so they still have full functionality versus efficiency cores in Intel land. But those four cores max out at 3.5Ghz. While the two full cores can boost to the full 4.9Ghz for the chip, but the Steam Machine is down clocking it by 100Mhz. I'm curious how some of the heavier games will run. Generally you there's 1-2 threads that have more load than the others. We'll get able to see that in action on the Steam Machine. But the slower cores match the max clock of the PS5, while being a newer architecture so they will have a much better IPC.It is, due to latency and bandwidth. But, depending on the PCIe lanes and generation, it can fetch a decent amount of data.
Contention of memory bandwidth is a problem is having one single pool, accesses by the CPU and the GPU. It's just a fact that even Sony has addressed in their presentations of consoles.
PC has some duplication of data, between pools, but it's not that big of a deal. The real problem with having 2 pools of memory is going through the PCIe bus.
Yes, 32Mb of L3 cache helps a lot with reducing memory accesses. Around 30% at 4K, Around 45% at 1440p and around 55% at 1080p.
This is AMD's own data. And was also corroborated by nvidia, when they started using a big L2 cache as well.
So in practical terms the APU in the Steam Machine will have as much bandwidth as the PS5. And it will have the advantage of lower latency for anything that hits the L3 on the GPU.
The CPU on the Steam machine is a Zen4 CPU. And this has huge advantages to the Zen2 CPU on the PS5.
One is IPC, due to 2 generations of improvements. The other is that Zen4 is a monolithic CPU. While the Zen2 on the PS5 is a 4+4 core CPU, so when data has to be shared across the 2 core complexes, there is a big performance hit.
The Zen4 CPU on the Steam deck probably has the full 32MB of L3 cache. While the PS5 only has 4Mb+4MB.
Worst yet, the PS5 CPU has to deal with high latency GDDR6, that hovers at around 140ns. The Zen4 CPU will deal with DDR5 with a latency of around 70ns.
So the CPU on the PS5 not only will have a lot more cache misses, due to having much less cache and having an older CPU front-end, but when it has to go to system memory it takes a bigger performance hit due to high latency.
The other problem is that the CPU on the PS5 runs with a max clock speed of 3.5Ghz. While the CPU on the Steam machine has a boost of up to 4.8Ghz. That is another 37% deficit, on top of the IPC.
The PS5's GPU can also clock up to 2.23Ghz, while the Steam Machine's is sustained max clock of 2.45Ghz. Which sounds like it won't be throttling due to power or heat at any point. I'm sure there's some headroom there as well that people can squeeze out of it with some overclocking.
The weakness of the Steam Machine will be the 8GB of VRAM, and the major impact of that is lower quality textures. The Steam Deck's 16GB of unified LPDDR5 let people choose higher quality textures as you often had 2-4GB of spare headroom. Beyond that I believe people are in for a surprise with how capable the Steam Machine ends up being, just like the Steam Deck. People see fine with the 4K output from the much less powerful Switch 2, so we'll see. I just hope Valve is able to get something better than FSR3 at the system level, that'll give the Steam Machine a major edge as many PS5 games are upscaled from 1080-1440p.
SportsFan581
Member
Wowzers for them if it sets off a piracy free-for-all, Dreamcast style.
I wasn't selling any
Neo Member
I've been lurking on some console modding and hacking forums regarding this news, and somehow it looks like people there don't share the sentient, that this leak will lead to a full jailbreak or even CFW.
Bojji
Gold Member
PS5 emulation will be hard thanks to custom I/O system+SSD.
CPU in Steam machine is much better than PS5 CPU so SM is weaker than PS5 in GPU power and available VRAM.
crazyriddler
Member
Exactly the same (but at 35), when I was a teenager or in my early 20s and short on cash, this kind of news was a godsend, but now I have more games than I can ever play.
Gp1
Member
Given that Optiscaller already solves that puzzle. I'm pretty sure that we are going to see some sort of it on the Steam Machine.
BennyBlanco
aka IMurRIVAL69
That's because Steam has so many users. Many of them are on old shitty laptops. Some on handhelds. Some on office PCs, etc. They have more users by a good margin than the entirety of PSN including ps4+ps5. So those 2 things aren't mutually exclusive.
Even if Steam had 200 million users, that would mean 60 million would have hardware superior to a Steam Machine. The latest figures from 2025 were around 185/190 users.
And if we count those who have hardware closer to a PS5, the gap is even greater.
The PS5 was at 80 million in August 2025.
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Hardware is a whole package, and anyone who knows anything about it considers the PS5 to be superior.
Bojji
Gold Member
Not in all aspects, for example Steam Machine will be able to play Starfield in (near) locked 60fps while (rumored) PS5 port won't.
Nothing official is known yet about Starfield PS5, we'll be able to compare once the game is released.
And in terms of power, there's just no comparison between the Steam Deck and the PS5.
Even the Switch 2 is above the Steam Deck.
Bojji
Gold Member
I thought we are talking about Steam Machine, not Steam Deck?
Zen 4 in SM will run circles around Zen 2 in PS5.
Typo, sorry. But in any case, we don't know anything about the PS5 version of Starfield.
And for AAA games in 2026, 8GB of VRAM...it's going to be borderline for many of them.
Bojji
Gold Member
That vram is tragic and will fuck up the future of this "console".
But rumored PS5 port of Starfield won't run better than XSX version (almost the same CPU):
Killer8
Gold Member
There was a time when this kind of thing would've been really exciting but now it's just getting a shrug from me. I have a spare PS5 lying around from when I upgraded to the Pro, which I will probably put custom firmware on if some comes out, but I just can't really see as much utility of CFW as it once had on a PlayStation Portable or a PS3. Like the ability to put all your PS1 games on the former, or install all your games to run off an HDD for the latter. We now have devices that you can just install Retroarch on and it all runs perfectly, so the appeal of being able to play old stuff has lost that luster. Even the idea of using Sony's own emulator on the PS5 is sickening, because it pales so badly compared to DuckStation or PCSX2. I'd rather just buy a Steam Machine and put it next to my PS5 Pro.
Casisalive
Neo Member
Reminds me, I still need to jailbreak my PS4 Pro.
nial
Member
We don't know if it's been internally delayed, though.