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Xbox One specs from Hot Chips session (8GB Flash, 1.31TFlops, 204GB/s peak BW)

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Chobel

Chobel

Member
I6Am56X.png


We need to go deeper
 
B

Busty

Banned
coldfoot said:
PS4: Manchester Utd
Xbone: Liverpool
WiiU: Crystal Palace
Click to expand...

So what you're saying is when the Xbone is turned on it's going to make an extraordinary amount of noise and then not do anything?

Or are you suggesting that when you try and load a disc the machine might try and spit at you or take a bite out of you?
 
I

inherendo

Member
pixlexic said:
Have not read through the thread but the 8 gig of flash memory is a big deal.

That is for paging memory and not only is flash ram faster than a mechanical hdd having the page memory cache to a separate source than the hhd makes it faster.
Click to expand...

It's not ram. Its nand, like ssd. Probably 2x-4x hdd speed depending on specs. Does not function as ram.
 
M

MoneyHats

Banned
DieH@rd said:
That's the description of the two possible architectures of PS4 that Sony could produce. They opted not to go with 1 terabyte/sec architecture because developers asked for simplicity.
Click to expand...

Right, but the point is that in some cases bandwidth can be added and Cerny admitted to this, however it takes a lot of work to make it happen, nonetheless still possible and we have no idea how MS setup with the move engines will ease this.
 
E

Ebomb

Banned
Krakn3Dfx said:
Probably holding a backup of primary system software in case you need to run a system restore or something to that effect. Also likely that it's oversized for future needs.
Click to expand...

That would be useful if the HDD failed but because their not replaceable outside, presumably, shipping it to MS for replacement, it would be weird to dedicate hardware and added cost for HDD redundancy. Not saying your wrong, just still unsure.
 
P

phosphor112

Banned
Wishmaster92 said:
has this been posted?

y2l9.png
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Mhm.

Sounddeli said:
More info on the Audio Chips DPUs

More info on Tensilica here: http://tensilica.com/

"Cadence's Tensilica processor cores excel in the SOC dataplane. That's where the hardest data-intensive work must be done to create the low-power, high-speed electronic devices consumers want today. We call these cores DPUs (dataplane processing units).


Because they're optimized for the power, performance, and area requirements, DPUs deliver 10-100x more performance than standard CPUs and DSPs. Other benefits include:
Easy customization with our patented automated tools.
Product differentiation – each DPU can be unique, making it almost impossible to copy.
Reduced time to market – dramatically less verification time.
Flexibility – Because it's programmable you can make changes after tape-out.
Click to expand...
 
P

pixlexic

Banned
inherendo said:
It's not ram. Its nand, like ssd. Probably 2x-4x hdd speed depending on specs. Does not function as ram.
Click to expand...

its doesn't matter .. the concept is the same. if you have a pc that streams data from one hdd while paging it on another you greatly im,prove your performance because you can do 2 things at once.
Same rules apply here. Ram or nand its still faster .


should also add paging memory is the same as when some one is talking about caching memory to hdd.
 
K

Krakn3Dfx

Member
Ebomb said:
That would be useful if the HDD failed but because their not replaceable outside, presumably, shipping it to MS for replacement, it would be weird to dedicate hardware and added cost for HDD redundancy. Not saying your wrong, just still unsure.
Click to expand...

A lot of PCs come with a 'disaster recovery' partition these days, not for if the hard drive goes bad but if something goes hinky with the software itself, could be something like that. But yeah who knows unless Microsoft says more about it.
 
SenjutsuSage

SenjutsuSage

Banned
Flatline said:
Is this "204GB/s peak BW" the sum of various RAM bandwidths? If true the thread title is highly misleading. Not this bullshit again, Microsoft.
Click to expand...

Nope, because if you add them up, you still couldn't arrive at that number. It's something to do with the ESRAM, but what specifically hasn't been explained. Only thing coming close to an explanation is that DF article awhile back about Xbox One's memory performance, where it was suggested that the ESRAM can read and write simultaneously.

It was stated as being some new development info that Microsoft passed along to developers regarding the Xbox One.

http://www.eurogamer.net/articles/digitalfoundry-xbox-one-memory-better-in-production-hardware

Microsoft has revised its own figures upwards significantly, telling developers that 192GB/s is now theoretically possible.

So how could Microsoft's own internal tech teams have underestimated the capabilities of its own hardware by such a wide margin? Well, according to sources who have been briefed by Microsoft, the original bandwidth claim derives from a pretty basic calculation - 128 bytes per block multiplied by the GPU speed of 800MHz offers up the previous max throughput of 102.4GB/s. It's believed that this calculation remains true for separate read/write operations from and to the ESRAM. However, with near-final production silicon, Microsoft techs have found that the hardware is capable of reading and writing simultaneously. Apparently, there are spare processing cycle "holes" that can be utilised for additional operations. Theoretical peak performance is one thing, but in real-life scenarios it's believed that 133GB/s throughput has been achieved with alpha transparency blending operations (FP16 x4).
Click to expand...

Before the GPU upclock, though.
 
B

BigDug13

Member
Ebomb said:
That would be useful if the HDD failed but because their not replaceable outside, presumably, shipping it to MS for replacement, it would be weird to dedicate hardware and added cost for HDD redundancy. Not saying your wrong, just still unsure.
Click to expand...

Yeah you're right on this. I think part of the reason the HDD isn't replaceable at all is because of the OS footprint needed this time, Windows and all that. It doesn't make sense to dedicate redundancy like that for potential failed components when there's no way for you to replace that failed component.

edit - I guess it could be for error correction type stuff and not for actual HDD failures, but who knows.
 
A

AlphaDump

Gold Member
SenjutsuSage said:
Nope, because if you add them up, you still couldn't arrive at that number. It's something to do with the ESRAM, but what specifically hasn't been explained. Only thing coming close to an explanation is that DF article awhile back about Xbox One's memory performance, where it was suggested that the ESRAM can read and write simultaneously.

It was stated as being some new development info that Microsoft passed along to developers regarding the Xbox One.

http://www.eurogamer.net/articles/digitalfoundry-xbox-one-memory-better-in-production-hardware



Before the GPU upclock, though.
Click to expand...

the ESRAM is 204 gbs
the 8 GIGS of RAM is 60 gbs

it isn't because of the esram, it's because of the RAM itself.
 
A

AlphaDump

Gold Member
SenjutsuSage said:
I think I know what you mean, but I'm a little confused. Elaborate a bit?
Click to expand...

I think I read your response a bit wrong, but was mainly saying, the peak bandwidth is infact 204 gb/s, the problem is it is at 32mb. the 8 gigs of RAM is the bottleneck at 60 gbs. they are two separate instances of bandwidth. so 8 gigs of RAM would have no benefit of the 204 gb/s..
 
tfur

tfur

Member
I am waiting for the comparison that somehow uses the latest Miley Cyrus butt picts. I know it's coming.
 
C

coldfoot

Banned
ekim said:
Semi-knowledge and implications from that:
Afaik you have to use a whole CU because you can't give multiple different instructions to different cores in one CU. So you are not able to get just 10gflops processing power from one CU while the rest of it does other stuff at the same time. You can switch context but that probably wastes cycles. You probably can use one CU for applying DSP effects to more than one channel by switching contexts though.
Click to expand...
Each CU is roughly 100 GFLOPS, reserving 1 CU for half the time would do the trick, or reserving 2 CU's for 25% of the time, all depending on resource availability. Of course the reality is that you won't see advanced audio outside of few choice first party exclusives for either platform.
 
R

Rashid

Banned
velociraptor said:
PS4: Obi Wan Kenobi
Xbox One: Mace Windu
Wii U: Jar Jar Binks
Click to expand...

PC = USSR (brute strength)
PS4 = superior Japanese design
Xbone = USA trying to copy Japan
Wii U = Scotland, trying hard to be relevant when it isn't and only people in it like it. Is dying slowly, not a competitor in anything on any level.
 
B

Busty

Banned
Rashid said:
PC = USSR (brute strength)
PS4 = superior Japanese design
Xbone = USA trying to copy Japan
Wii U = Scotland, trying hard to be relevant when it isn't and only people in it like it. Is dying slowly, not a competitor in anything on any level.
Click to expand...

WOAH! Easy there sweetheart.

I am deeply offended you are...., comparing Scotland to the WiiU.

Please change it to Gizmondo immediately or I will PM a mod.

WiiU indeed.
 
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