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[EXPf] AMD GCN More Rumours XDR2?! - Page 24

post #231 of 364
9/11/11 at 5:17am
when when and when

to CF mature solid 6950 with drivers more or less working, then what for 8000, or...
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post #232 of 364
9/11/11 at 5:29am
XDR2 or as some people might know it as, The successor to Play Station 3's main XDR system RAM. That's right folks, PS3's Cell CPU has 256mb of XDR RAM.
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post #233 of 364
9/11/11 at 5:50am
Quote:
Originally Posted by StarDestroyer View Post
when when and when

to CF mature solid 6950 with drivers more or less working, then what for 8000, or...
What?

XDR2 should be just a wee bump in overall bandwidth *wink wink*
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post #234 of 364
9/11/11 at 6:09am
i might move over to AMD/ATI gpus for the first time in my life
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post #235 of 364
9/11/11 at 8:58am
Quote:
Originally Posted by Fr0sty View Post
a silly rebrand is what they will dish out


or something lousy like that
Actually, that's not too far off from what's been said. They're supposedly doing an OEM only 28nm die shrink of Fermi, which will be the GTX 600 series, and then Kepler will be the GTX 700 series. Think both are due in 2012.
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post #236 of 364
9/11/11 at 9:02am
Quote:
Originally Posted by Somenamehere View Post
Since this new memory is going to be so fast I bet these will eat eyefinity setups alive.
Memory bandwidth is not dramatically higher than previous generations.

Indeed, current 6000 series GPUs have more bandwidth relative to GPU performance than even the XDR2 versions of the 7000 series listed in this article.
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post #237 of 364
9/11/11 at 10:01am
Quote:
Originally Posted by Rocket Dog View Post
XDR2 or as some people might know it as, The successor to Play Station 3's main XDR system RAM. That's right folks, PS3's Cell CPU has 256mb of XDR RAM.
256MB of XDR:64-bit memory bus.

The 360 has 10MB of embedded RAM + 512MB of GDDR3:128-bit memory bus which serves up 256Gb/s + 20Gb/s of bandwidth, the same as these modern GPUs.

So it would be cool if Microsoft done away with main memory and just used a large pool of embedded memory. No doubt their next-generation design decisions will weigh this because emulating Xbox 360 games that utilized the 10MB of EDRAM will be difficult unless there's a quantum leap in bandwidth between the CPU, GPU, and main memory.
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post #238 of 364
9/11/11 at 10:36am
Quote:
Originally Posted by Brutuz View Post
Quote:
Originally Posted by Homeles View Post
Quote:
Originally Posted by Brutuz View Post
GCN is the complete new architecture that was meant to launch with HD6k, but couldn't because of the 28nm node not being available
Don't you mean the 32nm node not being available?
Yeah, whoops, thanks for catching that. +rep
I'm surprised no one caught this. You were right the first time Brutuz. CPUs and GPUs use different nodes. At least the passed 2 shrinks, GPUs have been/will be slightly smaller than CPUs. When CPUs were 45nm, GPUs became 40nm, Now while CPUs are 32nm, GPUs will be 28nm.
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post #239 of 364
9/11/11 at 10:59am
Quote:
Originally Posted by BizzareRide View Post
So it would be cool if Microsoft done away with main memory and just used a large pool of embedded memory.
Putting 5,000 dollar processors in consoles probably wouldn't have gone so well.

Quote:
Originally Posted by BizzareRide View Post
No doubt their next-generation design decisions will weigh this because emulating Xbox 360 games that utilized the 10MB of EDRAM will be difficult unless there's a quantum leap in bandwidth between the CPU, GPU, and main memory.
I think you are overstating the benefit of the eDRAM.

Also, such a quantum leap has already occurred. Main memory on current high-end GPUs is nearly as fast as the internal eDRAM bus in the XBox360. The large L3 caches on modern CPUs are nearly as fast.

Furthermore, The XBox 360 eDRAM was severely limited in what it could be used for, as it's bandwidth to the rest of the system was not especially impressive.


Edited by Blameless - 9/11/11 at 11:02am
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post #240 of 364
9/11/11 at 11:24am
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For whatever it is worth, Charlie at SA posted that the rumors of XDR2 are not correct.
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