http://www.chipworks.com/en/technical-competitive-analysis/resources/blog/inside-the-xbox-one/
Compared to the PS4 (left), you can see the where the resources were dedicated;
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Xbox One APU - Die Photo - Courtesy of Chipworks
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http://www.chipworks.com/en/technical-competitive-analysis/resources/blog/inside-the-xbox-one/
Compared to the PS4 (left), you can see the where the resources were dedicated;
LiquidSolid
Member
Expected but still insane how much real estate ESRAM takes up.
Agreed.
CharmingCharlie
Member
They certainly had to cram that SRAM on. The only thing I am surprised about is that there isn't any SRAM clinging on for dear life on the edge
Wishmaster92
Member
look at all the space esram takes up. So sad....
rokkerkory
Member
Imagine no SRAM, that gpu could have been a 24 core monster.
Max 4CU more.
It's the CPU cache, no?
It was confirmed to be present in the external power brick.
Interesting that it has an eSRAM pool by the CPU cores, seperate from the ones by the GPU cores.
It appears seperate from the usual L2 cache placement on CPUs, but with it being eSRAM who knows. Maybe there is no regular L2 and it's just eSRAM, like the Wii U CPU has no traditional cache but eDRAM.
Actually see the criscross stuff on the PS4 and One die shots by the CPU cores? I think that's the L2 cache, so the eSRAM cache by the CPUs is something else.
It appears seperate from the usual L2 cache placement on CPUs, but with it being eSRAM who knows. Maybe there is no regular L2 and it's just eSRAM, like the Wii U CPU has no traditional cache but eDRAM.
Actually see the criscross stuff on the PS4 and One die shots by the CPU cores? I think that's the L2 cache, so the eSRAM cache by the CPUs is something else.
phosphor112
Banned
eSRAM ain't cheap.
No, CPU caches are inside the Jaguar outlines. That is something else, looks to be 2-3MB extra SRAM there for something. Maybe SHAPE but that's an excessive amount of SRAM for an audio chip.
adamantypants
Member
Holy sram. Did not expect that size.
The Wii U GPU also has some random extra blobs of embedded memory thrown in there. Maybe they both just use it as a quick access scratchpad.
With it being so far from the GPU circuitry in the One, I think it's just for CPU.
phosphor112
Banned
No, the cache are the squares inside the boxes labeled the Jaguar CPU's. You see two squares. Those are 1mb each. Meaning there is 2mb per 4 cores, 4mb on the die total.
Oh shit the PS4 has secret sauce too!1!!11!
SlickShoesRUCrazy
Member
Microsoft should have put the esram on a separate die like they did with the 360.
eats up a lot of room in the apu.
also, they didn't high light the specialized processors. Isn't the audio processor and the move engines and stuff also in the apu?
eats up a lot of room in the apu.
also, they didn't high light the specialized processors. Isn't the audio processor and the move engines and stuff also in the apu?
18 compute units functioning, 2 disabled to improve yields (if two go bad, they can disable those ones instead of toss the chip)
I'd guess that's the SHAPE + Kinect processing block, along with its own embedded SRAM.
2 disabled for redundancy.
Xbone (14 CUs, 2 disabled, 12 usable)
PS4 (20 CUs, 2 disabled, 18 usable)
Begaria
Member
I've been eagerly awaiting that comment section in his latest post to update to show what kind of asinine discussion they come with for this.
SlickShoesRUCrazy
Member
that's exactly the logic the misterxmedia morons are using. funny they haven't caught on to being lied to for the last 2 years by their "insiders"
They don't have "insiders". It's just the same guy talking to himself.
They're roughly the same size. PS4 is slightly smaller.
phosphor112
Banned
2 are disabled for yields. Just like 2 are disabled for X1.
SlickShoesRUCrazy
Member
it's not, they said at the hotchips event I believe that there was an additional 15mb of esram for the cpu.
20per die, then they disable upto 2 as needed to improve the yield.
Yeah, I assumed that was the reason, it is frequently done in the PC space and Sony did it with the cell as well. I just never heard anybody saying the 2 cores were disabled in this case. It makes sense though.
The two huge ESRAM squares are 16MB each. There is no way that little island is 15MB, it's 2-3 MB tops.
Just like the Xbox One has 14 CU's with 2 disabled the PS4 has 20 CU's with 2 disabled.
SlickShoesRUCrazy
Member
hence the quotations marks.
Ricerocket
Member
Wouldn't 15MB of eSRAM look similar to one of the eSRAM blocks on the right which I assume is 16MB x 2?
Backfoggen
Banned
Dat huge SRAM. Was this purely a measure to compensate for the DDR3? Why didn't they just go the GDDR5 route?
let me give you the run down...
- The tech is so new and powerful Chipworks doenst understand what they are looking at
- They didn't include the side shot x-rays because there is hidden stuff UNDER the hardware you can see
- They didn't x-ray the southbridge because the secret sauce is there
- There are extra "rectangles" on the CPU's and that proves the Xbone CPU is more powerful
- The 14 Xbone CU's are "denser" and therefore "beefier" than the PS4's so 12 "dense" and "beefy" is better!
no, what they said was there there was a total of 47MB of onboard storage...they didn't say anything about what it was or what kind...
MS wanted 8 GB and getting 8 GB GDDR5 by time the Xbox One launched was a gamble. A gamble they lost and Sony won.
with Kinect bundled, it would be much more expensive than $499
That doesn't look anywhere near 15. The two bigger pools are 16 each.