|25-09-2010, 02:20 AM||#1|
Join Date: May 19 2008
[Techpowerup.com] AMD Orochi ''Bulldozer'' Die Holds 16 MB Cache
Documents related to the "Orochi" 8-core processor by AMD based on its next-generation Bulldozer architecture reveal its cache hierarchy that comes as a bit of a surprise. Earlier this month, at a GlobalFoundries hosted conference, AMD displayed the first die-shot of the Orochi die, which legibly showed key features including the four Bulldozer modules which hold two cores each, and large L2 caches. In coarse visual inspection, the L2 cache of each module seems to cover 35% of its area. L3 cache is located along the center of the die. The documents seen by X-bit Labs reveal that each Bulldozer module has its own 2 MB L2 cache shared between two cores, and an L3 cache shared between all four modules (8 cores) of 8 MB.
This takes the total cache count of Orochi all the way up to 16 MB. This hierarchy suggests that AMD wants to give individual cores access to a large amount of faster cache (that's a whopping 2048 KB compared to 512 KB per core on Phenom, and 256 KB per core on Core i7), which facilitates faster inter-core, intra-module communication. Inter-module communication is enhanced by the 8 MB L3 cache. Compared to the current "Istanbul" six-core K10-based die, that's a 77% increase in cache amount for a 33% core count increase, 300% increase in L2 cache per core. Orochi is built on a 32 nm GlobalFoundries process, it is sure to have a very high transistor count.
Source: Xbit Labs
|amd, bulldozer, cache, die, holds, orochi, techpowerupcom|
|Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)|
|Similar Threads for: [Techpowerup.com] AMD Orochi ''Bulldozer'' Die Holds 16 MB Cache|
|Thread||Thread Starter||Forum||Replies||Last Post|
|[Techpowerup.com] Bulldozer-based Orochi and Fusion Llano Die Shots Surface in GlobalFoundaries Event||News||Reviews & News Online||0||03-09-2010 12:11 AM|
|A better "Handle" :-D||mag3||Asus Intel motherboards / CPU||6||05-02-2010 05:17 AM|
|[Techpowerup.com] AMD 32 nm CPU Schedule Advancement Not In-Sync With ''Bulldozer'' Architecture||News||Reviews & News Online||0||06-03-2009 08:30 PM|
|[Techpowerup.com] AMD Justifies Use of Large L3 Cache on Phenom II, Opteron||News||Reviews & News Online||0||15-01-2009 02:50 AM|
|[Techpowerup.com] AMD Propus and Regor Die Sizes Surface?||News||Reviews & News Online||0||21-12-2008 09:12 AM|
All times are GMT +11. The time now is 11:09 AM.