RWT发布关于详细介绍Barcelona的文章

Prescott

http://www.realworldtech.com/inc ... 3728&mode=print

最后对性能做了预测，措辞很客气哦：



For desktops, Barcelona will probably lead multithreaded performance and applications that strongly depend on high bandwidth, but single threaded workloads may slightly favor Intel’s designs. Griffin, the mobile variant of Barcelona will not be introduced till 2008. When it does appear it will add in new features that are essential for good power management. However, Griffin's success for notebooks will depend a lot on how well AMD can integrate at the platform level, including ATI’s chipsets and graphics processors.

Dual processor servers will be a mixed bag for AMD. Expect extremely strong performance for almost all HPC-style workloads – that is and will continue to be a strong suit for AMD’s architecture because of the highly integrated system design and copious bandwidth. However, for commercial workloads like file or web serving or transaction processing, which don’t require as much bandwidth, any performance gaps will be much smaller. For these workloads Barcelona will certainly be competitive and will exceed Intel’s performance on some benchmarks, but Intel will likely retain a lead for other benchmarks. Performance for single processor servers will generally be similar - but the advantages from AMD's system architecture will be smaller, hence the multithreaded performance will probably be even closer than for dual processor servers.

One area where AMD should have a slight edge is on dual processor platform power consumption, due to differences in the memory systems. AMD uses DDR2 DIMMs, which consume 3-5W each, while the FB-DIMMs that Intel’s systems use add 5-7W for each DIMM. The power advantage for AMD will depend on the configuration of each individual server. As more memory is added, AMD’s advantage will grow, however, as other components are added, AMD’s relative advantage will diminish – for example, in systems with 8 or more disks, the differences in memory systems may be lost in the noise. This difference in memory architectures applies for dual processor servers only, since Intel's single processor systems use DDR2 DIMMs. For single processor systems, Intel will likely have better power consumption.

At the high-end, MP servers should be a bright spot for AMD. The higher level of integration and the additional HyperTransport link in Barcelona will improve an already formidable system architecture that has Intel on the defensive. One open question is whether Barcelona will truly commoditize the market for large MP (8 socket) servers. The capability is there, but it is unclear whether OEMs will aggressively push a solution that does not address the inherent limits of a snooping cache coherency policy, and lacks some of the RAS features that typical mid-range servers offer.

[ 本帖最后由 Prescott 于 2007-5-16 21:17 编辑 ]

elisha

K8到K10差别真是小啊，不仔细看都看不出来

Prescott

原帖由 elisha 于 2007-5-16 21:27 发表
K8到K10差别真是小啊，不仔细看都看不出来

预计某A Fan会说改进都在看不见的地方。
或者是DK水平不够，看不出区别来。

bessel

没觉得hpc市场要完蛋。

原帖由 potomac 于 2007-5-16 22:10 发表
自从CELL和FPGA加入搅局，
HPC市场都快完蛋啦。:lol:
以后真看不出MP处理器怎么卖？:unsure:

angelion

像 potomac 这么评价 HPC 的市场还真富挑战

就算是 intel  现在就能发布 32nm 或 IBM 现在就能把 Cell 平民化，

也绝对不敢如此承诺 :lol:

[ 本帖最后由 angelion 于 2007-5-17 01:01 编辑 ]

Prescott

a fan一个都不见了，真无聊
:(

原帖由 potomac 于 2007-5-16 22:10 发表
自从CELL和FPGA加入搅局，
HPC市场都快完蛋啦。:lol:
以后真看不出MP处理器怎么卖？:unsure:

HPC的市场份额还是挺大的。不过，Intel有Harpertown先顶一下，而且现在Opteron DC在HPC上性能其实还不错，形势其实没什么大变化。
而MP，Tigerton vs. Barcelona总比Tulsa vs Opteron DC好，所以在MP上AMD形势其实是在恶化。

到Nehalem一到，事情就彻底解决了。
至于桌面，我也懒得说了。

[ 本帖最后由 Prescott 于 2007-5-17 01:31 编辑 ]

lzy24

原帖由 Prescott 于 2007-5-16 21:11 发表
For desktops, Barcelona will probably lead multithreaded performance and applications that strongly depend on high bandwidth

w00t) 8字补丁

angelion

原帖由 lzy24 于 2007-5-17 00:55 发表

w00t) 8字补丁

       也许说成“AMD 的设计有点过于前瞻”比较好听，

    但是无论如何，这些设计在个人 PC 上出现，稍早了点，一两年后也许比较合理

    莫非 AMD 转换了利润增长重心，目前只打算搞 HPC ？

ITANIUM2

原帖由 angelion 于 2007-5-17 01:17 发表




    莫非 AMD 转换了利润增长重心，目前只打算搞 HPC ？

这么做等于自寻死路

shike_cuke

AMD也真是，肉都出来这么久了，还拿不出想样点的产品出来。也真让人怀疑K10的性能了！

elisha

原帖由 toscana007 于 2007-5-17 10:20 发表



你看到什么啦？

差别还真大哦，起码有几个数字变动了:whistling:

elisha

原帖由 toscana007 于 2007-5-17 12:57 发表
看不出你还是个人才:o :o，不知道这两个哪个是出自阁下之手？

顾左右而言他 也是A fan的特色了

[ 本帖最后由 elisha 于 2007-5-17 13:16 编辑 ]

spinup

原帖由 elisha 于 2007-5-17 12:24 发表

差别还真大哦，起码有几个数字变动了...

THG研究过K7-K8,认为内核几乎没有变动.
可是K8 vs netburst的结果大家都看到了.

ITANIUM2

原帖由 toscana007 于 2007-5-17 12:57 发表
看不出你还是个人才:o :o，不知道这两个哪个是出自阁下之手？

这是什么逻辑 w00t)

Prescott

原帖由 spinup 于 2007-5-17 13:41 发表


THG研究过K7-K8,认为内核几乎没有变动.
可是K8 vs netburst的结果大家都看到了.

看样子，你对Barcelona vs. Conroe的信心还是很足哦。

哈哈哈哈

你会如同AM2一样的失望的。（当然，你会说其实AM2挺好的，你一点都不失望）

the_god_of_pig

原帖由 spinup 于 2007-5-17 13:41 发表


THG研究过K7-K8,认为内核几乎没有变动.
可是K8 vs netburst的结果大家都看到了.

捷径可不是要多少有多少的:p