xbit: Nehalem将集成三通道DDR3内存控制器，支持DDR3-1600内存

Prescott

每个CPU的内存带宽是12.8G x 3 = 38.4GB/s :o

看以后谁还敢老是拿specfp_rate来说事。:whistling:

http://www.xbitlabs.com/news/cpu/display/20070610234912.html

Intel Readies New Memory Controller for Nehalem Chips
Intel Nehalem to Feature Triple-Channel Memory Controller

Intel’s code-named Nehalem processors have been discussed for nearly five years now, but Intel was tight-lipped enough in order not to disclose details of the new micro-architecture itself as well as implementation peculiarities. Nevertheless, recently Intel started to inform its partners about the future platforms, which means that at least some peculiarities of the new chips have come to light.

It is known that Nehalem as well as Westmere central processing units(CPUs) will use a new platform architecture and while the company does not directly state it, the new platform will hardly use processor system busses, but rather will feature point-to-point serial bus (which is currently referred to as Common Serial Bus or CSI) similar to Hyper-Transport or PCI Express. The new CPUs due in late 2008 will feature so-called dynamically scalable architecture, which means that Intel will be able to tailor its processor designs according to needs of various market segments.

In particular, Intel already announced that, among other things, it would be able to scale and configure caches, interconnect controllers as well as memory controllers. Already now Intel can reduce or increase cache sizes for various processors without many problems, whereas Advanced Micro Devices can enable or disable Hyper-Transport links within its processors depending on their positioning (e.g. AMD Opteron processors for multi-processor servers have three HT links, whereas Athlon 64 for1P machines have only one HT link). But Intel wants to go even further and scale the number of memory controller channels. According to PC Watch web-site, the top Nehalem processor code-named Bloomfield with four cores will have triple-channel DDR3 memory controller, whereas slightly less advanced may have less channels.Three memory channels supporting PC3-12800 (DDR3 1600MHz) memory would provide approximately 38.4GB/s memory bandwidth, up significantly from about 21.3GB/s memory bandwidth available today. Given that in 2009 Intel plans to release Nehalem processor with built-in graphics core,triple-channel memory controller may help to keep performance in 3D games on relatively high level.
Intel did not comment on the news-story.

[ 本帖最后由 Prescott 于 2007-6-12 12:27 编辑 ]

lzy24

"According to PC Watch web-site, the top Nehalem processor code-named Bloomfield with four cores will have triple-channel DDR3 memory controller"w00t)

itany

P大上次转的幻灯片上边的Micro-Buffer DIMM是什么意思啊？
这次的3通道太匪夷所思了 :wacko:

mxyou

3通道:funk: :funk: :funk:

我现在还是单通道512MB呢~~

elisha

很好，很强大

原帖由 itany 于 2007-6-12 12:49 发表
P大上次转的幻灯片上边的Micro-Buffer DIMM是什么意思啊？
这次的3通道太匪夷所思了 :wacko:

P大大概不小心说了不该说的东西了

HeavenPR

3 通道！ 居然被我猜中了！

既不记得我们当时说的 Nehalem，有人说是 3 核心的，现在看来好像不是 :lol:

我当时说会搭配 3 通道内存，Intel 居然听了我的话 w00t)

shike_cuke

3通？？不就是384BIT？？？？？

superwally

一个通道的内存是64bit的吧

itany

原帖由 elisha 于 2007-6-12 13:11 发表
很好，很强大


P大大概不小心说了不该说的东西了

原来一直以为是4通道的FB-DIMM的
难道这个是投放桌面和双路工作站的？

the_god_of_pig

A社前景不明啊，宣传的40%明年就该倒过来了吧，哈哈:p

zzzi

NND，看来以后买内存还要三条一买？什么时候要一打一买我就升级～

itany

原帖由 zzzi 于 2007-6-12 18:13 发表
NND，看来以后买内存还要三条一买？什么时候要一打一买我就升级～

您买一双路系统，每个插座提供6个内存插槽，总共12根，您都用上就是一打

naze

原帖由 Seraphlich 于 2007-6-12 17:18 发表
n年后终于也用上了内存控制器。

确实,没错

AMD的首席销售和市场主管亨利理查德表示，AMD目前仍然领先Intel两年左右。
他表示“我们可以将自己的技术优势领先到2007/2008年

同时,amd也表示

AMD新任制造生产副总裁Douglas Grose仍显得信心十足，
他说：“65nm已经过时了(old hat)，AMD现在关注的是45nm。

:wacko: :wacko: :wacko:

[ 本帖最后由 naze 于 2007-6-12 21:32 编辑 ]

bessel

很可能与那个bt的rambus鸟公司有关。

原帖由 itany 于 2007-6-12 12:49 发表
P大上次转的幻灯片上边的Micro-Buffer DIMM是什么意思啊？
这次的3通道太匪夷所思了 :wacko:

itany

原帖由 bessel 于 2007-6-12 23:58 发表
很可能与那个bt的rambus鸟公司有关。

RAMBUS出品，必然是神作！
从内存到FlexIO，只有RAMBUS才能解决电互联的问题！

zzzi

也只有RAMBUS才能让INTEL颜面全无～

naze

对了 P大
记得你说过6月份penryn
会进行大规模性能评测
怎么现在还没消息呀

bessel

Microbuffer被rambus注册了，呵呵。
估计又要收专利费了。

http://www.rambus.com/us/news/trademark_guidelines/index.html

原帖由 itany 于 2007-6-13 00:21 发表


RAMBUS出品，必然是神作！
从内存到FlexIO，只有RAMBUS才能解决电互联的问题！

garou

3通道..........为什么不干脆把内存做成256bit位宽？这样带宽不就上去了？

自自在在

应该搞四条内存槽，插几条就几通道！既增加容量，也增加带宽:lol: