So how much of PS4's RAM is reserved for OS?

R0nn

Member
Charge me a fee if this has been answered before, but with the news that the Xbox ONE's OSes use up 3 gigs of RAM, I was honestly wondering how much memory the PS4's OS takes up? Is this known yet? I could imagine it's also quite a bit with the streaming tech they have going on.
 

Skyzard

Banned
It's not confirmed as far as we know. People think it's 1GB. Killzone:SF used 3 out the 4 they thought they were going to have.
 

Moonstone

Member
They are gonna reserve at least 2 GB for the OS, I think.

No way they will make the same mistake twice. They started with 4GB and Killzone looked great with it. They have the faster RAM, there is no need to squeeze out as much RAM as possible for gaming. They also could start with 3GB for OS and then lower that restriction later on.
 
It's not confirmed as far as we know. People think it's 1GB. Killzone:SF used 3 out the 4 they thought they were going to have.

Not Really.

Valient_Killzone_Shadow_Fall_Demo_Postmortem-6.jpeg


http://www.guerrilla-games.com/presentations/Valient_Killzone_Shadow_Fall_Demo_Postmortem.pdf

3 Gigs for GPU only and 1.7 for the rest. Not sure if that includes OS.


Edit: looking at the presentation again the remaining space is still for the game. The pie chart does NOT include information about reserved space for OS.
 

LukeTim

Member
Charge me a fee if this has been answered before, but with the news that the Xbox ONE's OSes use up 3 gigs of RAM, I was honestly wondering how much memory the PS4's OS takes up? Is this known yet? I could imagine it's also quite a bit with the streaming tech they have going on.

3GIGS?

I know there's three operating systems, but that's ridiculous.

Then again, Microsoft's OSes have never been at the forefront of conservation of resources.

That's terrible, though. The Xbox One is sounding worse the more I hear about it.
 

Madness

Member
3GIGS?

I know there's three operating systems, but that's ridiculous.

Then again, Microsoft's OSes have never been at the forefront of conservation of resources.

That's terrible, though. The Xbox One is sounding worse the more I hear about it.

Well they are going to be running 3 simultaneous operating systems.
 

Sethos

Banned
edit: i've seen a few posts in the past hour all trying to make out that PS4's video and streaming tech will mean it uses loads of GB's of RAM.
WTF? Fanboy angst, or a genuine MS shill smear campaign? Genuinely intrigued.

I think people are just oblivious to how little some of this stuff actually requires. 1GB is pretty high to start with, we had a discussion thread about it where I called 1GB and a lot of people said 512MB as that's a solid range for a simple core OS with a recording feature and some multi-tasking. However I don't see any reason why you'd need 2GB, that's insane and a massive waste of expensive, fast RAM. The amount of shit I have running now in Windows 8 and I'm at 2.2GB and I believe Windows even takes up some unused RAM as a buffer.

1GB is the sweet spot, definitely.
 
Probably 1-2GB since the Killzone guys were taking up 3GB and expecting only 4GB in the console.

EDIT: Well there you go, it was using 4.5GB when they expected the PS4 to have 4GB total.
 

big_z

Member
they will up it to 2-3GB and free up space later on if they can. if they claim only 1GB out the door they can potentially screw themselves long term if they need more.

3GIGS?

I know there's three operating systems, but that's ridiculous.

Then again, Microsoft's OSes have never been at the forefront of conservation of resources.

That's terrible, though. The Xbox One is sounding worse the more I hear about it.

3GB gives them room to hold a bunch of apps in a suspended state at once for instant access. if sony sticks to 1GB then they can end up like the wiiU where it's slow as shit due to it reloading stuff every time you move to a new menu.
 

Skyzard

Banned
Not Really.

Valient_Killzone_Shadow_Fall_Demo_Postmortem-6.jpeg


http://www.guerrilla-games.com/presentations/Valient_Killzone_Shadow_Fall_Demo_Postmortem.pdf

3 Gigs for GPU only and 1.7 for the rest. Not sure if that includes OS.


Edit: looking at the presentation again the reaming space is still for the game. The pie chart does NOT include information about reserved space for OS.

I remember that slide but it doesn't make much sense that it went over 4GB:

"We were told [the PS4] was 4GB originally," Just Add Water’s CEO Stewart Gilray told VideoGamer.com. “We first knew it had 8GBs when Mark said at the event's stage, 'And it has 8GB of memory.' We'd had kits at that point for a good while."

Gilray added that he suspects only “a couple of really close first-parties" knew about the increase in memory prior to the system’s announcement, adding that most studios were likely satisfied with the 4GB included with the development kits. "It's a fantastic amount of memory," he continued. "Especially GDDR5 memory, because it's so fast you don't have to have everything there at once. You can swap it in and out instantly, effectively. But when they said 8GB it was like, 'Okay.'"

Not sure what's up though yeah, weird. I know devkits had more RAM probably anyway but I'm not sure what that all means.
 
We don't know. 1GB is likely well enough as it doesn't have any extra bullshit to deal with.

And don't "imagine" anything. The original PS3 OS took up a lot, and hit a wall, till they realised they could buffer most of it onto the hard drive and load it in at will.
I'd imagine they do the same here.

edit: i've seen a few posts in the past hour all trying to make out that PS4's video and streaming tech will mean it uses loads of GB's of RAM.
WTF? Fanboy angst, or a genuine MS shill smear campaign? Genuinely intrigued.

Alot of comments I have read seemed to either cut straight to the heart of the matter others seem like alot of pent up angst and denial.

I remember that slide but it doesn't make much sense that it went over 4GB:



Not sure what's up though yeah, weird.

iirc Dev kits always have more Ram for them to work with. They need the flexibility first then can work on optimizing later.
 

R0nn

Member
edit: i've seen a few posts in the past hour all trying to make out that PS4's video and streaming tech will mean it uses loads of GB's of RAM.
WTF? Fanboy angst, or a genuine MS shill smear campaign? Genuinely intrigued.

Honestly, I'm way more excited about the PS4 than the Xbox ONE atm. It's just a genuine curiosity I have, since everyone is making such a big deal out of the amount the OS of the X1 uses and also because I'd imagine you'd need quite a bit of fast RAM to make the way Sony will apply streaming possible. Maybe I'm all wrong though and the harddrive is more than enough to offload most of it.

If the OS only uses up 1GB, all the better. That's actually what I genuinly would like to hear.
 
Honestly, I'm way more excited about the PS4 than the Xbox ONE atm. It's just a genuine curiosity I have, since everyone is making such a big deal out of the amount the OS of the X1 uses and also because I'd imagine you'd need quite a bit of fast RAM to make the way Sony will apply streaming possible. Maybe I'm all wrong though and the harddrive is more than enough to offload most of it.

If the OS only uses up 1GB, all the better. That's actually what I genuinly would like to hear.

When thinking about streaming tech and video, remember what the PS3 and the 360 can do and at what resolution. With an entire gig that should be enough for closed console.
 

Skyzard

Banned
iirc Dev kits always have more Ram for them to work with. They need the flexibility first then can work on optimizing later.

M°°nblade;58530357 said:
It does make sense if you know dev kits have 8GB GDDR5.

Dynamic RAM usage

Then that slide wasn't going to be informative to how much ram KZ:SF was actually going to take either, if they were showing the stats for their devkit version. That they went so high with 4GB in mind suggests either they are great at optimising or they didn't expect the OS to use much. Not sure how much they can trim of course so I don't know.
 

Razgreez

Member
The more pertinent question is, what is the system's peak bandwidth usage while gaming - obviously its most bandwidth heavy application. You never want to be in a situation where you're stalling the framebuffer (dropping frames) while reorganizing critical data.

I.e. if the PS4 worst case peak usage is 6GB/s then it doesn't matter if the OS uses 1 or 2GBs of RAM because the 2GBs will always be available
 

AngryMoth

Member
Since the original plan was to have only 4gb of memory I would be very suprised if they were reserving more than 1gb for the OS
 
Even if they had a 2GB portion reserved for OS, they'd still have a comfortable advantage over their competitors. More total memory, and better quality memory. I don't suppose anybody confirmed the old GPU/CPU rumors about the PS4 having an edge there too?
 

Osiris

I permanently banned my 6 year old daughter from using the PS4 for mistakenly sending grief reports as it's too hard to watch or talk to her
Even if they had a 2GB portion reserved for OS, they'd still have a comfortable advantage over their competitors. More total memory, and better quality memory. I don't suppose anybody confirmed the old GPU/CPU rumors about the PS4 having an edge there too?

Microsoft did at the Architectural panel yesterday, 12 Shader cores @ 768 ops per clock versus the PS4's 18 Shader cores @ 1152 ops per clock.
 

R0nn

Member
When thinking about streaming tech and video, remember what the PS3 and the 360 can do and at what resolution. With an entire gig that should be enough for closed console.

1GB is pretty high to start with, we had a discussion thread about it where I called 1GB and a lot of people said 512MB as that's a solid range for a simple core OS with a recording feature and some multi-tasking.

Thank you! This is what I was looking for.
 

Drek

Member
If I recall EDGE's rumors on the PS4 claimed it was 512MB and were right on just about everything, but that was before doubling the RAM (which they alluded to). So the reasonable assumption is between 512MB to 1GB. I'd bet on 1GB myself.
 
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