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Forums - PC - AMD Kaveri APU Features GDDR5/DDR4? Good read.

GDDR5 isn't new for the PC Plaform though...

It's new in APU's yeah... but that's because APU's in computers have never been meant to compete with GPU's... instead being cutrate bargain specs.  Basically the dreaded "integrated graphics" solutions you see. 

 

GPUs have used GDDR5 forever now.    It's good news for gaming laptops and all.   Can't see how it will effect PC gaming though, outside there being a new baseline of graphics for people who buy cheap computers.

As for DDR4? That seems unlikely... because as far as I know that WOULD be something new for PCs.  (Outside expensive server farms.)

As far as I can tell the Kevari will be a decent medium level graphics solution.

 

I'm confused where all the enthusiasm and huge expectations are coming from for performance.

 

As far as I can tell the Kaveri will end up being a nice middle of the road modern graphics APU that will challenge your middle of the road GPUs right now..


Impressive for an APU... but not a high end type thing that should be getting you excited CGI.



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Yew 128bit bus? Not much performance improvement from that if you think about it, but would be great for ultra-thin devices though. It'd be better if it's dual channel, then we'd be looking at 256bit bus and that'd actually make a pretty big difference.



AMD will probably do something similar to what they did on the old 780G type chipsets where manufacturers would solder some Ram to the motherboard for the GPU to use as a "cache" where it's memory pools in system memory and the motherboards memory could be accessed and used in tandem or individually depending on needs or user settings.

Besides, the greatest issue with APU's is generally memory bandwidth, 128bit of GDDR5 is still nothing to sneeze at and certainly far better than the 64bit of DDR3 that the 780G chipsets used.
Plus having 256bit memory interface would require more layers on the PCB, hence driving up costs and AMD *is* targeting a cost sensitive market with it's APU's, better to go with 64bit or 128bit and clock the memory chips higher.




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I am guessing that is what this is

Having GDDR5 intergrated on the board would explain why there is no visable RAM slots. I suspect that this platform will be very appealing to manufacturers of so called Steamboxes in the near future. Allowing passable game performance and HTPC capabilities in a small box, hopefully it is a money maker for AMD because they really need it at the moment. I worry about the latency of GDDR5 if they go that route tho, could be a real CPU performance bottleneck.



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Pemalite said:
AMD will probably do something similar to what they did on the old 780G type chipsets where manufacturers would solder some Ram to the motherboard for the GPU to use as a "cache" where it's memory pools in system memory and the motherboards memory could be accessed and used in tandem or individually depending on needs or user settings.

Besides, the greatest issue with APU's is generally memory bandwidth, 128bit of GDDR5 is still nothing to sneeze at and certainly far better than the 64bit of DDR3 that the 780G chipsets used.
Plus having 256bit memory interface would require more layers on the PCB, hence driving up costs and AMD *is* targeting a cost sensitive market with it's APU's, better to go with 64bit or 128bit and clock the memory chips higher.


I'd definitely pick up an ultra-thin version with touch screen capability, it'd be good for portable ultrabook type devices for sure. It's just that the weakness of APUs are the memory bandwidth for GPU use and the performance would skyrocket with 256bit since we'd be talking about 8X the bandwidth at the same clock instead of just 4x compared to DDR3 on 64bit contoller. :(

PS: Also hope they don't use GDDR5 but are all DDR4 instead, GDDR5 sounds like a terrible idea TBH.



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CGI-Quality said:
Haswell supporting DDR4 by 2014

http://www.extremetech.com/computing/158824-haswell-e-to-offer-ddr4-support-up-to-eight-cores-in-2014


With Haswell-E being then next Intel high end platform... I think everyone expected this. Otherwise why bother upgrading from LGA2011? Those things still destroy anything you throw at them...



CGI-Quality said:
disolitude said:
CGI-Quality said:
Haswell supporting DDR4 by 2014

http://www.extremetech.com/computing/158824-haswell-e-to-offer-ddr4-support-up-to-eight-cores-in-2014


With Haswell-E being then next Intel high end platform... I think everyone expected this. Otherwise why bother upgrading from LGA2011? Those things still destroy anything you throw at them...

Indeed. Will pair nicely with the Maxwell GPU series!

I want to see something utilize this. If you look at benchmarks for games, RAM speed tops out at 1866 mhz when it comes to performance benefits. 

PCIe 3.0 isn't even close to being maxed out. I personally tested 7950 crossfire in X16, X4 PCIe 2.0 and the performance loss is less than 5%. 

And intel is already talking about Skylake with 14 nm, PCIe 4.0, DDR4, etc...SATA IV (probably)



disolitude said:
CGI-Quality said:
Haswell supporting DDR4 by 2014

http://www.extremetech.com/computing/158824-haswell-e-to-offer-ddr4-support-up-to-eight-cores-in-2014


With Haswell-E being then next Intel high end platform... I think everyone expected this. Otherwise why bother upgrading from LGA2011? Those things still destroy anything you throw at them...

Even if i throw a rock at it?



AnthonyW86 said:
disolitude said:
CGI-Quality said:
Haswell supporting DDR4 by 2014

http://www.extremetech.com/computing/158824-haswell-e-to-offer-ddr4-support-up-to-eight-cores-in-2014


With Haswell-E being then next Intel high end platform... I think everyone expected this. Otherwise why bother upgrading from LGA2011? Those things still destroy anything you throw at them...

Even if i throw a rock at it?


Yeah you could probably throw a rock at a 2011 CPU and most other intel CPUs... They are build solid and pins are on the mobo so... 



disolitude said:
AnthonyW86 said:
disolitude said:
CGI-Quality said:
Haswell supporting DDR4 by 2014

http://www.extremetech.com/computing/158824-haswell-e-to-offer-ddr4-support-up-to-eight-cores-in-2014


With Haswell-E being then next Intel high end platform... I think everyone expected this. Otherwise why bother upgrading from LGA2011? Those things still destroy anything you throw at them...

Even if i throw a rock at it?


Yeah you could probably throw a rock at a 2011 CPU and most other intel CPUs... They are build solid and pins are on the mobo so... 

It has nothing on a Xbox One though, that thing looks tougher than the black box of an airplane.