PlayStation III Architecture
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BenSkywalker
Regular
They are talking about eDRAM there, 64MB is actually freakin huge
Peppermonkey
Newcomer
? What does eDRAM have to do with how much RAM there is? 64 MB is what the Xbox has, so putting the PS3 at 64 MB would just make it equal the highest of the last generation. At least that's what I'd initially think.
Are you saying that eDRAM is just damn fast or something?
I personally agree that it sounds low for the next generation.
Are you saying that eDRAM is just damn fast or something?
I personally agree that it sounds low for the next generation.
eDRAM smokes SDRAM and DDR RAM, and RDRAM, and just about everything else on the market.
1T SRAM used in the GameCube is faster.
here's a quick explanation:
http://home.cfl.rr.com/bjp/edram.htm
Think of eDRAM as L1/L2 cache.
1T SRAM used in the GameCube is faster.
here's a quick explanation:
http://home.cfl.rr.com/bjp/edram.htm
Think of eDRAM as L1/L2 cache.
BenSkywalker
Regular
It's eDRAM.
The XBox has 128KB by comparison. The PS3, according to what this states, will have 512 times as much as the XBox.
Marco-
Does the article contain a typo? They state 64MB not 64Mb? 8MB wouldn't be anywhere near as impressive of course.
BenSkywalker
Regular
Well, I would wager it's 'typical' cache, but I wouldn't wager too heavily on that point
Given what they list, it is eDRAM however, whatever use it may end up having.If we were to judge the size of the eDRAM footprint with regard to process technology the 64MB is easily doable for 2005. Sub 0.065u will probably be standard by that time. If we look at the GS in the GSCube it had 32MB of eDRAM using I believe 0.018u process tech. so 64MB is definitely possible. Of course this all depends on the logic area of the mulitple cores that will need to share the same area within the same die as the eDRAM. IIRC Cell will use SMT.
My guess is that PS3 will have 4 Cell processors connected using Redwood. Each Cell processor will have 8 cores and each core will have it's own dedicated eDRAM. The GS will have 64MB of eDRAM for caching textures. Then there's the 256MB of Yellowstone RAM and it will use Blu-ray
My guess is that PS3 will have 4 Cell processors connected using Redwood. Each Cell processor will have 8 cores and each core will have it's own dedicated eDRAM. The GS will have 64MB of eDRAM for caching textures. Then there's the 256MB of Yellowstone RAM and it will use Blu-ray
Brimstone: DRAM uses one transistor per bit, so that would be 64M*8 or half a binary billion transistors just for the memory arrays. I suppose there'd be some overhead involved too of course.
And PC... I believe you got a zero too many in there somewhere or else we'd be using a process in 2005 that is several times coarser than we do today. Anyway, what's blu-ray?
*G*
And PC... I believe you got a zero too many in there somewhere or else we'd be using a process in 2005 that is several times coarser than we do today.
Anyway, what's blu-ray?*G*
Peppermonkey
Newcomer
If the PS2 has 64 MB of that.... hmm, I was thinking you guys meant 64 MB total RAM. I guess I was wrong. 64 MB of RAM just for the CPU is very large.
marconelly!
Veteran
What happened with the B3D forum professional integrity Since when people around here trust Inquirer articles?
Btw, that article pretty clearly says that 64MB RAM is for all the cells to share. That sounds like a total amount of memory to me, which would be amazingly low for a 2005 device.
Since when people around here trust Inquirer articles?Btw, that article pretty clearly says that 64MB RAM is for all the cells to share. That sounds like a total amount of memory to me, which would be amazingly low for a 2005 device.
It goes on to mention there will be four of the cells there. Never does it say 64MB is per cell.
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