VGLeaks: PS4's architecture evolution over time

There was an option for 2 GB of RAM initially. I've been told this by a variety of people. The initial VG leaks document they had even specified 2 GB. We were all mega excited when 4 was announced, but 8 was something no one saw coming.

Yeah in 2011 - It was 2 originally, with a sort of "hey if we can throw more in there we will" - and so they did. Funny they call that CPU switch an "upgrade" lol
 
I wonder if the Bus was increased (doubt it) after they increased total ram.

The machine is well balanced. It stands toe to toe with a mid-range current gen PC, which is about the best any one can ask for if the PS4 prices itself into the right hemisphere.
 
I thought the reason there was a bandwidth downgrade from 192GB/s to 176GB/s was because of the switch to higher density chips (4->8) that aren't available at that much bandwidth.

That's what I remember the Hynix PDF was showing, anyway.

No, they are available. But they can use lower voltage version of GDDR5 memory with 176GB/s bandwidth.
 
VGLeaks are really milking this.

Next article : "PS4's VGLeaks articles over time" :o

xzibit-skeuds.jpg
 
A lot of people seem distressed at getting information they previously didn't have. Strange.
 
It's much harder to "optimize" games for 8 netbook/tablet-style CPUs than it is for 2 or 4 more powerful, more capable cores.

You keep saying that but wouldn't customizations (including the rumoured clock speed upgrade) and utilizing 8 instead of normal 4 cores (in vanilla Jag) improve it?
 
i-Lo said:
utilizing 8 instead of normal 4 cores (in vanilla Jag) improve it?

Just like how cell was a pain to code for, at least it's better than what they first planned (4 cores).

8 Jaguars are not better than 4 Steamrollers in any way other than (likely) cost and power consumption. Steamroller isn't ready, though.

Crimson_Gold said:
Do you see this being a long-term issue or something that'll be addressed early on in the upcoming generation?

I don't see it as too much of an issue, as this isn't the Cell - coding for it will be easier. But any programmers I know would much rather have 4 fat, capable cores like Core i/Steamroller than more of the ARM/Atom/Jaguars of the world.
 
Not much to "leak" when something has already been officially announced.

When did Sony release any real technical information about the system?

informed-system-architecture.png


Does this satisfied your every curiosity? It doesn't do it for me.
 
8 Jaguars are not better than 4 Steamrollers in any way other than (likely) cost and power consumption. Steamroller isn't ready, though.



I don't see it as too much of an issue, as this isn't the Cell - coding for it will be easier. But any programmers I know would much rather have 4 fat, capable cores like Core i/Steamroller than more of the ARM/Atom/Jaguars of the world.

Wait. so you understand how tech works, or are you just pretending you know something?

because if you do understand tech, your tag doesn't suit you.

If you don't, then yeah.

StevieP
Doesn't actually understand technology or have insider info.
 
Wait. so you understand how tech works, or are you just pretending you know something?

because if you do understand tech, your tag doesn't suit you.

If you don't, then yeah.

StevieP
Doesn't actually understand technology or have insider info.

I know nothing :D
(as is often the case on GAF, don't judge people by their tags or junior statuses or anything like that - contributions to a discussions are still contributions to a discussion... respond to those contributions)
 
Wait. so you understand how tech works, or are you just pretending you know something?

because if you do understand tech, your tag doesn't suit you.

If you don't, then yeah.

StevieP
Doesn't actually understand technology or have insider info.

He knows what he's talking about
 
Wait. so you understand how tech works, or are you just pretending you know something?

because if you do understand tech, your tag doesn't suit you.

If you don't, then yeah.

StevieP
Doesn't actually understand technology or have insider info.

Tags are also used as jokes :)

But yes, less, more powerful cores are generally preferred to more, weaker cores. It's just simpler.
 
They put out a spec sheet.

With very little info.

Main Processor Single-chip custom processor
CPU : x86-64 AMD “Jaguar”, 8 cores
GPU : 1.84 TFLOPS, AMD next-generation Radeon™ based
graphics engine
Memory GDDR5 8GB
Hard Disk Drive Built-in
Optical Drive
(read only)
BD 6xCAV
DVD 8xCAV
I/O Super-Speed USB (USB 3.0) 、AUX
Communication Ethernet (10BASE-T, 100BASE-TX, 1000BASE-T)
IEEE 802.11 b/g/n
Bluetooth® 2.1 (EDR)
AV output HDMI
Analog-AV out
Digital Output (optical)

Nothing of substance. The leaks have far more real information, if correct.
 
Isn't it the cpu speed slower compared Cell or I'm wrong?

It has been said that in pure FLOPS, Jaguar is definitely weaker. However, in general purpose performance, it beats CELL. I haven't really followed anything about the CELL, though, so I don't know for sure. Just repeating what has been said before by knowledgeable people.
 
John CarmackVerified account ‏@ID_AA_Carmack 21 Feb
@kmanmx all apps are better with half the cores at twice the performance, the question gets more nuanced if the trade is at 1.5x perf

It is generally easier to use less cores that can do more per clock cycle.
 
Wait. so you understand how tech works, or are you just pretending you know something?

because if you do understand tech, your tag doesn't suit you.

If you don't, then yeah.

StevieP
Doesn't actually understand technology or have insider info.

You fell victim to his tag.
 
It is generally easier to use less cores that can do more per clock cycle.

Yep, CPU's aren't designed for highly paralleled processes like a GPU. I really wish Sony went with a better CPU. That's my only problem. I want them to be able to run PlanetSide 2 on there without any hitches and without using the compute from the GPU extensively.
 
Yep, CPU's aren't designed for highly paralleled processes like a GPU. I really wish Sony went with a better CPU. That's my only problem. I want them to be able to run PlanetSide 2 on there without any hitches and without using the compute from the GPU extensively.

For now.
 
Well yeah... And GPU's don't have 1TB/s bandwidth, for now. Doesn't change the fact that we are in the present and we need to work with things accordingly.

The other thing to remember is heat and power issues with modern consoles. Faster processors would be great, but it comes under these limitations. I'm seeing current and future consoles more like gaming laptops without the screen. The form-factor is larger, but that extra space is taken by the power supply and applicable cooling solutions.
 
8 Jaguars are not better than 4 Steamrollers in any way other than (likely) cost and power consumption. Steamroller isn't ready, though.



I don't see it as too much of an issue, as this isn't the Cell - coding for it will be easier. But any programmers I know would much rather have 4 fat, capable cores like Core i/Steamroller than more of the ARM/Atom/Jaguars of the world.


I been wondering about this part of the APU round map & if it applied to the PS4 APU like could turbo mode take the 8 1.6GHz cores & use them like 4 3.2GHz cores? or well that only work with a APU that already have CPU cores that are clocked at around 3.2GHz?


 
I really wish Sony went with a better CPU. That's my only problem. I want them to be able to run PlanetSide 2 on there without any hitches and without using the compute from the GPU extensively.

A more capable CPU would be better of course, but it depends on the game really. The i7 is a much more capable CPU in terms of overall performance than an AMD Phenom II, but in terms of frames-per-second in certain games, the difference is negligible. The reason being, that particular game is more GPU intensive than CPU intensive.
 
8 Jaguars are not better than 4 Steamrollers in any way other than (likely) cost and power consumption. Steamroller isn't ready, though.
4 Steamroller cores as in 2 modules? Because that ain't so hot. (and 4 modules would be comparatively huge)
 
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