• Hey, guest user. Hope you're enjoying NeoGAF! Have you considered registering for an account? Come join us and add your take to the daily discourse.

DigitalFoundry: X1 memory performance improved for production console/ESRAM 192 GB/s)

Status
Not open for further replies.

RoboPlato

I'd be in the dick
So Xbox One was designed for bigger worlds and PS4 for better looking worlds. 3rd parties will still make it the same for both, though.
Not really. The PS4's bandwidth is more conducive to bigger worlds with more varied detail. They've done a lot to make up for the latency of GDDR5. It's a non issue. PS4 may also have an extra CPU core open to games, not confirmed yet.
 

coldfoot

Banned
Dear God, Dick's love affair with Xbox is sickening. He should just stick to the facts and avoid doing any commentary. A jump from 102 to 133 that's only effective if you're reading and writing to different addresses in memory is not a 88% increase LOL. Just like we saw with the PS3, these non-traditional performance advantages will only be utilized by first party devs.
 

twobear

sputum-flecked apoplexy
It's Microsoft maths. It doesn't make sense to add the BW for the main RAM and the eSRAM to compare it to the PS4's main RAM.
That's not what they're doing, according to the article. They're saying that the BW to the eDRAM is actually higher than they thought it was. This isn't adding the main RAM bandwidth to the eSRAM bandwidth.
 

OverHeat

« generous god »
We've been hearing about yield issues from reliable sources for months and suddenly MS is not only saying that's not true, but that they're getting even high quality yields than previously stated?

Oh yeah, this is from Microsoft.
Think of what would happen if dev targeted their game to the new speed and it was not true.....MS would not lie to dev about something like this. Think of that for a second.
 
So basically the so called power gap is even smaller. heck i thought the xbox cpu was at 1.2 but it is at 1.6. So basically multiplats will look the same and run smoothly on both systems it will take the exclusives to show a difference if there is one.

So Xbox One was designed for bigger worlds and PS4 for better looking worlds. 3rd parties will still make it the same for both, though.

lol wut?
 

iamvin22

Industry Verified
I call BS. Since when can you take the bandwidths from two different memory pools and just add them together to get the magical bandwidth?
 

USC-fan

Banned
Still not over the 200GB/s

its like a 22GB/s bump nice but not that big..you are still held back because it like a small cache.

If sony went this route they had test systems with 1TB/s with edram.....
 

strata8

Member
It's Microsoft maths. It doesn't make sense to add the BW for the main RAM and the eSRAM to compare it to the PS4's main RAM.

If it's used as a cache, both Intel and Anand disagree with you.

"Intel claims that it would take a 100 - 130GB/s GDDR memory interface to deliver similar effective performance to Crystalwell since the latter is a cache. Accessing the same data (e.g. texture reads) over and over again is greatly benefitted by having a large L4 cache on package."

Intel's Crystalwell uses 25.6GB/s main memory and 100GB/s eDRAM.

"If it’s used as a cache, the embedded SRAM should significantly cut down on GPU memory bandwidth requests which will give the GPU much more bandwidth than the 256-bit DDR3-2133 memory interface would otherwise imply. Depending on how the eSRAM is managed, it’s very possible that the Xbox One could have comparable effective memory bandwidth to the PlayStation 4. If the eSRAM isn’t managed as a cache however, this all gets much more complicated."

But as Anand also said, that might not be the case.
 
We've been hearing about yield issues from reliable sources for months and suddenly MS is not only saying that's not true, but that they're getting even high quality yields than previously stated?

Oh yeah, this is from Microsoft.

This isn't some marketing press release, this is info they've provided to developers to enable them to target the hardware correctly. Lying about this to developers would actually work against them, with a bunch of launch titles with shoddy framerates and slowdown.
 

CorrisD

badchoiceboobies
So basically the so called power gap is even smaller. heck i thought the xbox cpu was at 1.2 but it is at 1.6. So basically multiplats will look the same and run smoothly on both systems it will take the exclusives to show a difference if there is one.

Are you sure you aren't confusing numbers for different things?

The Xbox One CPU was always 1.6Ghz, the difference in power between it and the PS4 comes from the GPU, the Xbox One supposedly being 1.2 teraflops while the PS4 is at 1.8, the bandwidth isn't really going to make up 0.6 tf out of thin air at this point.
 

Raist

Banned
That's not what they're doing, according to the article. They're saying that the BW to the eDRAM is actually higher than they thought it was. This isn't adding the main RAM bandwidth to the eSRAM bandwidth.

Right. Still saying "it's got more bandwidth than the PS4 now" is a bit silly when it's for the eSRAM only.
 

LiquidMetal14

hide your water-based mammals
So why is it fluff with MS, but not fluff with Sony?

2 different pools of memory do not produce constant 192GB/s. 1 pool of unified 176GB/s without an added step (eDRAM). It was posted earlier by another. I don't think I have to outline why the "theoretical" number is a bit misleading when talking about overall performance.

but that equals 202?

LOL math up in here. Looks like he edited.
 

x3sphere

Member
look. Stop trying to downplay this people. It only benefits both consoles if the gap in power is closer.


That said, a more complicated setup :- Only first party will take advantage. That is undeniable.

It is a good thing if the gap is closer, definitely. On your other point, I disagree, many third party titles still led development on PS3 even though it was the more difficult platform to deal with - and here we are not talking PS3 levels of complexity.
 

Madness

Member
Someone needs to explain this better for non-pc folk. Does this mean that theoretically XbOne is more capable than the ps4 then?
 

8bits

Banned
This isn't some marketing press release, this is info they've provided to developers to enable them to target the hardware correctly. Lying about this to developers would actually work against them, with a bunch of launch titles with shoddy framerates and slowdown.

Yes, but every PS4 zealot here is sooo much more intelligent and knowledgeable about the Xbox One than Microsoft is. They clearly know the exact set up of the ram and system specifications, therefore "M$'s maths be sooo wrong lolz".
 
Is the HDD read speed ~23 GB/s? That would make sense if they're just adding that to the bandwidth speed.

hell no be glad if you could get like 20mb/s from a hdd but rumor has it next gen console are going to use hdd with a flash cache. An ssd and disk hybrid so to speak.

Someone needs to explain this better for non-pc folk. Does this mean that theoretically XbOne is more capable than the ps4 then?

It can compete better with the ps4 on paper now.
But like this gen showed paper specs aren't everything and we need like 2~4 years of real world performance.
Inbe4 microsoft moneyhatting devs or lazy devs when games wont show the 50% paper specs.
 

phanboy4

Member
Someone needs to explain this better for non-pc folk. Does this mean that theoretically XbOne is more capable than the ps4 then?

Nah, still means slightly different but more or less the same in practice. Parity is what both console mfgs want. Makes it easier for cross platform devs, which is most console devs. These days, being more powerful than your competitor is not nearly as important as not being less powerful than your competitor, from a business standpoint.
 
Yes, but every PS4 zealot here is sooo much more intelligent and knowledgeable about the Xbox One than Microsoft is. They clearly know the exact set up of the ram and system specifications, therefore "M$'s maths be sooo wrong lolz".
By this article MS engineers are dumb.Maybe they have more surprises and find more CUs than 12 from production...
 
Are you sure you aren't confusing numbers for different things?

The Xbox One CPU was always 1.6Ghz, the difference in power between it and the PS4 comes from the GPU, the Xbox One supposedly being 1.2 teraflops while the PS4 is at 1.8, the bandwidth isn't really going to make up 0.6 tf out of thin air at this point.

oh guess I am then. thanks for the correction.
 
Status
Not open for further replies.
Top Bottom