推土机的晶体管数量说变就变呀？一下缩水了 8 亿晶体管

Edison

              by Anand Lal Shimpi on 12/2/2011 2:36:00 AM               
Posted in                                     CPUs                    ,                    AMD                    ,                    Bulldozer                    ,                    FX                    ,                    FX-8150                                                
                                 

                     

                 This is a bit unusual. I got an email from AMD PR this week asking me to correct the Bulldozer transistor count in our Sandy  Bridge E review. The incorrect number, provided to me (and other reviewers) by AMD PR around 3 months ago was 2 billion transistors. The actual transistor count for Bulldozer is apparently 1.2 billion transistors. I don't have an explanation as to why the original number was wrong, just that the new number has been triple checked by my contact and is indeed right. The total die area for a 4-module/8-core Bulldozer remains correct at 315mm2.

CPU Specification Comparison
CPU	Manufacturing Process	Cores	Transistor Count	Die Size
AMD Bulldozer 8C	32nm	8	1.2B ~2B	315mm2
AMD Thuban 6C	45nm	6	904M	346mm2
AMD Deneb 4C	45nm	4	758M	258mm2
Intel Gulftown 6C	32nm	6	1.17B	240mm2
Intel Sandy Bridge E (6C)	32nm	6	2.27B	435mm2
Intel Nehalem/Bloomfield 4C	45nm	4	731M	263mm2
Intel Sandy Bridge 4C	32nm	4	995M	216mm2
Intel Lynnfield 4C	45nm	4	774M	296mm2
Intel Clarkdale 2C	32nm	2	384M	81mm2
Intel Sandy Bridge 2C (GT1)	32nm	2	504M	131mm2
Intel Sandy Bridge 2C (GT2)	32nm	2	624M	149mm2

        Despite the downward revision in Bulldozer's transistor count by 800M, AMD's first high-end 32nm processor still  boasts a higher transistor density than any of its 45nm predecessors (as you'd expect):

       

        Transistor density depends on more than just process technology. The design of the chip itself including details like the balance between logic, cache and IO transistors can have a major impact on how compact the die ends up being. Higher transistor densities are generally more desirable to a manufacturer (fewer defects per die, more die per wafer, lower costs), but from the end user's perspective the overall price/performance (and power?) ratio is what ultimately matters.

elisha

一点2B

acqwer

amd```fans 发表于 2011-12-3 12:34
龟缩了0.8B，连2B都不如了[lol>

还是有一点2B嘛

amd```fans

龟缩了0.8B，连2B都不如了

xf-108

工艺控spinup哪去了？不是号称AMD的晶体管密度多么多么高么？？？还不出来。
坐等Llano挤水分，AMD这次都没放进去。