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Intel's Return to DRAM: Haswell GT3e to Integrate 128MB eDRAM?
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Intel's Return to DRAM: Haswell GT3e to Integrate 128MB eDRAM?
By Anand Lal Shimpi
AnandTech.com
April 23, 2013
We've known for a while now that Intel will integrate
some form of DRAM on-package for the absolute highest end
GPU configurations of its upcoming Haswell SoC. Memory
bandwidth is a very important enabler of GPU (and multi-
core CPU) performance, but delivering enough of it
typically required very high speed interfaces (read: high
power) and/or very wide interfaces (read: large die
areas). Neither of the traditional approaches to scaling
memory bandwidth are low power or cost effective, which
have kept them out of ultra mobile and integrated
processor graphics.�
The days of simple performance scaling by throwing more
transistors at a design are quickly coming to an end.
Moore's Law will continue but much like the reality check
building low power silicon gave us a while ago, building
high performance silicon will need some out of the box
thinking going forward.
Dating back to Ivy Bridge (3rd gen Core/2012), Intel had
plans to integrate some amount of DRAM onto the package
in order to drive the performance of its processor
graphics. Embedding DRAM onto the package adds cost and
heat, and allegedly Paul Otellini wasn't willing to
greenlight the production of a part that only Apple would
use so it was canned. With Haswell, DRAM is back on the
menu and this time it's actually going to come out. We've
referred to the Haswell part with embedded DRAM as
Haswell GT3e. The GT3 refers to the GPU configuration (40
EUs), while the lowercase e denotes embedded DRAM.
Haswell GT3e will only be available in a BGA package
(soldered-on, not socketed), and is only expected to
appear alongside higher TDP (read: not Ultrabook) parts.
The embedded DRAM will increase the thermal load of the
SoC, although it shouldn't be as painful as including a
discrete GPU + high speed DRAM. Intel's performance
target for Haswell GT3e is NVIDIA's GeForce GT 650M.�
Continues at:
http://www.anandtech.com/show/6911/intels-return-to-the-dram-business-haswell-gt3e-to-integrate-128mb-edram
Jai Maharaj, Jyotishi
Om Shanti
http://groups.google.com/group/alt.fan.jai-maharaj
By Anand Lal Shimpi
AnandTech.com
April 23, 2013
We've known for a while now that Intel will integrate
some form of DRAM on-package for the absolute highest end
GPU configurations of its upcoming Haswell SoC. Memory
bandwidth is a very important enabler of GPU (and multi-
core CPU) performance, but delivering enough of it
typically required very high speed interfaces (read: high
power) and/or very wide interfaces (read: large die
areas). Neither of the traditional approaches to scaling
memory bandwidth are low power or cost effective, which
have kept them out of ultra mobile and integrated
processor graphics.�
The days of simple performance scaling by throwing more
transistors at a design are quickly coming to an end.
Moore's Law will continue but much like the reality check
building low power silicon gave us a while ago, building
high performance silicon will need some out of the box
thinking going forward.
Dating back to Ivy Bridge (3rd gen Core/2012), Intel had
plans to integrate some amount of DRAM onto the package
in order to drive the performance of its processor
graphics. Embedding DRAM onto the package adds cost and
heat, and allegedly Paul Otellini wasn't willing to
greenlight the production of a part that only Apple would
use so it was canned. With Haswell, DRAM is back on the
menu and this time it's actually going to come out. We've
referred to the Haswell part with embedded DRAM as
Haswell GT3e. The GT3 refers to the GPU configuration (40
EUs), while the lowercase e denotes embedded DRAM.
Haswell GT3e will only be available in a BGA package
(soldered-on, not socketed), and is only expected to
appear alongside higher TDP (read: not Ultrabook) parts.
The embedded DRAM will increase the thermal load of the
SoC, although it shouldn't be as painful as including a
discrete GPU + high speed DRAM. Intel's performance
target for Haswell GT3e is NVIDIA's GeForce GT 650M.�
Continues at:
http://www.anandtech.com/show/6911/intels-return-to-the-dram-business-haswell-gt3e-to-integrate-128mb-edram
Jai Maharaj, Jyotishi
Om Shanti
http://groups.google.com/group/alt.fan.jai-maharaj
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