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Next-Gen PS5 & XSX |OT| Console tEch threaD

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You can read from the first 10GB at 320bits.
The other 6GB can only be read at 192bits.

The first 10GB will have data that is striped across all of the memory modules to achieve 320bits.
The last 6GB will have data that is striped only across all the higher capacity chips to achieve 192bits.

This is because the higher capacity chips have a memory space (the extra capacity) that does not exist in the lower capacity chips and therefore cannot be striped with them. But this limitation only occurs when you use the extra capacity on the higher capacity chips, therefore if you stick to the first half of the memory space you can read across both the lower and higher capacity chips at once.
Ok, I think I got it.

We have 4 1GB chips and 6 2GB chips for a total of 10 chips and 16 GBs. When reading from the first GB of each chip, we can use them all at the same time getting 576 GB/s. But when you allocate data to the second GB of the 2GB chips, you can't distribute that data among the 1GB chips because they don't have that extra space so your speed when accessing that data is limited to 6/10s of the maximum theoretical speed, which is approximately 340something GB/s. Is that it?
 
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01011001

Banned
Okay so you Expect it can be smaller based on this guy, it will be very exciting to see whats Sony will deliver in the end

I don't, and I don't know if he had these before Phil Spencer showed it or after... if it was after it could have just been a well done estimate based on the picture.
if it was before it could just have been a guess based on PC GPUs, because if you guess the CU count correctly you can just look at PC parts and get your estimate that way
 

-kb-

Member
I think that PS5 will have 20GB GDDR6 (10 modules and 320bit bus) so the MS's higher bandwidth is gonna be sustained for PS5 and 4GB of DDR4 for OS. That is why BB article points to higher than expected BOM as the RAM prices soared lately.

I personally don't think a DDR5/GDDR6 dual memory controller is really worth it. Using the same extra space your probably better off adding extra GDDR6 channels (but that would cost more then DDR5).
 

MarkMe2525

Banned
I read it.

12tf of normal stuff and another 13tf from RT hardware = it's like 25tf when running RT games.

Awesome. Good to see DF get first coverage of SeX and tell gamers this:

"Without hardware acceleration, this work could have been done in the shaders, but would have consumed over 13 TFLOPs alone," says Andrew Goossen. "For the Series X, this work is offloaded onto dedicated hardware and the shader can continue to run in parallel with full performance. In other words, Series X can effectively tap the equivalent of well over 25 TFLOPs of performance while ray tracing."
My take was that it wasn't both it's congruently but if they were to run the chip flat out at 16bit it would perform 25 tf.
 
Well it is now wrong but the first two dies picks from Phil was definitely > 380mm2.

He said XSX was 350 and PS5 was 300.

looks like he was on the nose (ok so 360 vs 350 much closer than anyone else and he had no photos like we did)

https://pttweb.tw/s/3We5x

Anubis is no longer doing, it may be the development machine code Arden should not have been unexpected to be the version to be released and Arden is moving faster, obr is still in the early stages of verification and Arden is more than one size larger than the OBR (350 vs 300 mm2)

People guessed wrong because they were using imprecise measurements. The die size didn’t change.
 
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-kb-

Member
Ok, I think I got it.

We have 4 1GB chips and 6 2GB chips for a total of 10 chips and 16 GBs. When reading from the first GB of each chip, we can use them all at the same time getting 576 GB/s. But when you allocate data to the second GB of the 2GB chips, you can't distribute that data among the 1GB chips because they don't have that extra space so your speed when accessing that data is limited to 6/10s of the maximum theoretical speed, which is approximately 340something GB/s. Is that it?

Exactly.

What total bandwidth would that produce?

Depends on the frequency of the GDDR6 chips that are used.
 

rnlval

Member
Yeah that's what came to mind, EVEN if it is not 100 FPS (which it is), you're still looking at...

- Native 4K/60FPS.
- 50% more particle effects than PC Ultra. (can be demanding at times).
- Better volumetric lighting than PC Ultra. (demanding).
- New tech: Contact-hardening shadows. (demanding).
- Screen-space Ray Traced Global Illumination. (demanding).

This already is better than what RTX 2080 Ti offers, we haven't looked at it being 100FPS as well.

Looks like they optimized the Unreal 4 engine even more and maybe the RDNA 2 GPU architecture is 50% more efficient because that with the 12 TFs = more performance than the RTX 2080 Ti.
Perhaps Lisa Su's Ryzen style PC 4K GPU disruption claim could be true. "80 CU RDNA 2" Big Navi perhaps.
 

saintjules

Member
why wouldn't it? since when do people think more options are a bad thing? you can use the official battery pack, you can use yoir own AA batteries or you can use third party offerings.
I have battery packs made by Energizer for example, they come with a charge dock and last about 10h... cheap, long enough battery life and you just put the controller in the charge dock after you're done playing.

before that I used high quality AA rechargables.

Oh ok, thanks for your comment.
 
Well it is now wrong but the first two dies picks from Phil was definitely > 380mm2.
People were guessing wrong on the recent die pic as well. No one estimated 360mm until the official numbers were reached.

People have a hard time estimating period.
Yeah. That is called reification, as previous guesstimates were based on 16nm value comparisons with 5700 series CU size I think and were wrong for all APU guesses since the beginning.
 

ethomaz

Banned
Yeah. That is called reification, as previous guesstimates were based on 16nm value comparisons with 5700 series CU size I think and were wrong for all APU guesses since the beginning.
I believe the 380mm2 estimation was based in the memory chip size.
The new chip showed yesterday is a bit smaller than the one showed by Phil in December.
 
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ethomaz

Banned
Old chip.

scarlett-chip.jpg


New chip.

Xbox-Series-X-chip.png



Nope they're exactly the same chip.
They are not.
They even changed what is write in the chip.

The previous chip was probably a ES for Project Scarlett.
 
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CrustyBritches

Gold Member
He said XSX was 350 and PS5 was 300.

looks like he was on the nose (ok so 360 vs 350 much closer than anyone else and he had no photos like we did)

https://pttweb.tw/s/3We5x

People guessed wrong because they were using imprecise measurements. The die size didn’t change.
I think AquariusZi was referring to die category sizes. Something like "Arden is more than a size larger than Oberon".

MrFox from Beyond3d also came quite close to the 360mm² measurement with his estimate.

If this is true, then Oberon would be ~300mm², so maybe like 310mm². Also of note, AquariusZi leaked the Navi 21 die size at 505mm². That's without a CPU on die in comparison to XSX's 360mm² with a CPU. Assuming this is accurate, and a 360mm²(maybe ~300mm² GPU?) can "already deliver very, very similar performance to an RTX 2080", then what kind of monster is that Navi 21 chip?
 
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Old chip.

scarlett-chip.jpg


New chip.

Xbox-Series-X-chip.png




They are not.
They even changed what is write in the chip.

The previous chip was probably a ES for Project Scarlett.
Nope only 8K is missing. That Phil Spencer profile pic from twitter (1st one) is photoshopped to suppress what is written on the die and also an engineering sample. But the dies are the same, as can be seen from the protrusions around the die is exactly matching.
 

ethomaz

Banned
Nope only 8K is missing. That Phil Spencer profile pic from twitter (1st one) is photoshopped to suppress what is written on the die and also an engineering sample. But the dies are the same, as can be seen from the protrusions around the die is exactly matching.
Nope.
There are pics lol

images

images
 
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psorcerer

Banned
Ok, I think I got it.

We have 4 1GB chips and 6 2GB chips for a total of 10 chips and 16 GBs. When reading from the first GB of each chip, we can use them all at the same time getting 576 GB/s. But when you allocate data to the second GB of the 2GB chips, you can't distribute that data among the 1GB chips because they don't have that extra space so your speed when accessing that data is limited to 6/10s of the maximum theoretical speed, which is approximately 340something GB/s. Is that it?

Yep. 100% right.
560 = 10 chips
336 = 6 chips
Which gives us exactly 1.75 per chip.
Which is slightly lower clocked than 1.8 maximum.
 
Yeah that's what came to mind, EVEN if it is not 100 FPS (which it is), you're still looking at...

- Native 4K/60FPS.
- 50% more particle effects than PC Ultra. (can be demanding at times).
- Better volumetric lighting than PC Ultra. (demanding).
- New tech: Contact-hardening shadows. (demanding).
- Screen-space Ray Traced Global Illumination. (demanding).

This already is better than what RTX 2080 Ti offers, we haven't looked at it being 100FPS as well.

Looks like they optimized the Unreal 4 engine even more and maybe the RDNA 2 GPU architecture is 50% more efficient because that with the 12 TFs = more performance than the RTX 2080 Ti.
MotherOfGod.jpg

I have been praying for PC Ultra settings of current gen games and it looks to be better than that. Sweet Jesus
 
I think AquariusZi was referring to die category sizes. Something like "Arden is more than a size larger than Oberon".

MrFox from Beyond3d also came quite close to the 360mm² measurement with his estimate.

If this is true, then Oberon would be ~300mm², so maybe like 310mm². Also of note, AquariusZi leaked the Navi 21 die size at 505mm². That's without a CPU on die in comparison to XSX's 360mm² with a CPU. Assuming this is accurate, and a 360mm²(maybe ~300mm² GPU?) can "already deliver very, very similar performance to an RTX 2080", then what kind of monster is that Navi 21 chip?
Navi 21 Guesses were also very wrong!
 

Zero707

If I carry on trolling, report me.
It is the same socket lol
Capacitors and package will be similar.
The chip itself are not the same.
why because they romved 8k logo and project scarlet ? like i said old one was hardware sample for testing and the new one is what you will find in a finished product
 

longdi

Banned
Last time this round, Sony went about nonchalantly announcing ps4 specs in Feb, while there were rumors and leaks and hype about what's in xbox. Remember we went as far as rumoring xbox have a 8 cores intel cpu?

I can picture in Sony hq now, scrambling which parts of PS5 to panic boost so it looks comparable on paper.

Xbsx specs are totally great, well beyond my next gen expectations.

Sony where art yoz?
 

ethomaz

Banned
why because they romved 8k logo and project scarlet ? like i said old one was hardware sample for testing and the new one is what you will find in a finished product
Yeap they are different chips.

BTW it is not clear the chip showed yesterday will be the one to go into production.

For a November releases the final chips are usually produced after June.
 
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Yeap they are different chips.

BTW it is not clear the chip showed yesterday will be the one to go into production.

For a November releases the final chips are usually produced after June.
So what they are gonna add that missing 20mm2 back on the chip to please the mm2 measurers and CU counters, and along the way make it 56 CUs with 4 disabled so 60 in total to also validate GitHub as a bonus?
 
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Kumomeme

Member
Last time this round, Sony went about nonchalantly announcing ps4 specs in Feb, while there were rumors and leaks and hype about what's in xbox. Remember we went as far as rumoring xbox have a 8 cores intel cpu?

I can picture in Sony hq now, scrambling which parts of PS5 to panic boost so it looks comparable on paper.

Xbsx specs are totally great, well beyond my next gen expectations.

Sony where art yoz?
probably still chill and relax in bathub while watching TLOU2 and GoT poster hanging on ceiling
 
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