针对前几天的推土机假图，发一个PI预测：同频K10.5慢50%略少

根据官方公布的消息是服务器推土机增加33%核心数量，性能提高50%
依你的说法，
magny-cours opteron 6176 12核 2.3Ghz 单线程100% 多线程1200%
一个模块最多能提供1.8核的性能
bulldozer 16核 2.3Ghz单线程(依楼主所说) 66% 多线程=66% x(8x1.8)= 950%
假设官方所说的性能提高50%是多线程情况，16核推土机性能应为1200%x1.5=1800%
16核推土机要提升多少频率，性能才能从950%效能提升至1800%(1.89倍)
我估计最少都要提升100%左右的频率(4.6Ghz)
AMD服务器能出现4.6Ghz的cpu，我不太相信

对于CPU架构，我不是很熟悉
不过，以我所知推土机整数核心性能是有提升，推土机整数核心的管线设计与k10是完全不同，不能只以数管线数量来判断性能
AMD官方人员对推土机整数核心的解说
“In addition, John clarified how each integer unit’s pipelines are oriented. Whereas K10 enables three pipelines shared between ALUs and AGUs (effectively 1.5 of each), Bulldozer increases this number to four pipelines—two dedicated AGU and two dedicated ALU.”
http://www.tomshardware.co.uk/bulldozer-bobcat-hot-chips,review-31978-2.html
“Today's processors have 3 execution units that are shared between ALU/AGU. That is essentially 1.5 ALU and 1.5 AGU. With BD we get 2 AGU and 2 ALU. Much better.”
http://www.xtremesystems.org/forums/showthread.php?p=4523917#post4523917
“Even though the module allows AMD to build a chip with many cores on a single die, single-threaded integer performance cannot be compromised. The out-of-order scheduler must efficiently pick up to four ready instructions for execution and wake up dependent instructions so that they may be picked in the next cycle. The execution units must compute results in a single cycle and forward them to dependent operations in the following cycle. All of this is required so that the module gives high architectural performance, measured in the number of instructions completed per cycle (IPC).”
http://blogs.amd.com/work/2011/02/21/amd-at-isscc-whats-in-a-box/
等上市:sleepy:

"There are four integer execution units per core. Twounits which handle all arithmetic, logical and shift operations (EX). And two whichhandle address generation and simple ALU operations (AGLU)."

http://support.amd.com/us/Processor_TechDocs/47414.pdf

bulldozer 2ALU+2AGU 对
k101.5 ALU and 1.5 AGU

整数单线程性能明显是加强了