The document summarizes the key differences and improvements between AMD's "Bobcat" and "Jaguar" CPU cores. "Jaguar" features over 10% higher core frequencies, over 15% higher instructions per clock, double the core count from two to four cores, and a larger shared 2MB L2 cache compared to "Bobcat's" 512KB per core cache. "Jaguar" also includes additional instruction sets, a larger 40-bit physical address capability, and a 128-bit floating point unit providing better performance and capabilities than "Bobcat".

1. “BOBCAT” TO “JAGUAR” CORE FEATURE DIFFERENCE AND
IMPROVEMENTS
Feature “Bobcat” “Jaguar”
“Jaguar” User Benefit
Core Frequency 1.4 GHz/1.7 GHz >10% Improved CPU performance
Instructions per clock “90% of mainstream” >15% Improved CPU performance
More performance for highly threaded
Core Count 2 4
apps
L2 Cache 512KB per core 2MB Shared More performance for less threaded apps
Core C6 power Enhanced core C6
Power efficiency Better battery life
gating power gating
Bobcat +
AMD64,
SSE4.1, 4.2, Improved performance/power when
Instruction Sets SSE1-SSE3,
AES/CLMUL, MOVBE, applications use newer instructions
SSSE3,SSE4a
AVX, F16C, BMI1
Physical address
36-bit 40-bit Memory capacity scale-up
capability
Out of Order (OOO)
Yes Yes More performance than In-Order designs
Execution
Machine Width 2-wide 2-wide Power efficient design point
Floating Point Unit 64-bit data path 128-bit data path Better media experience
1 | “Bobcat” vs. “Jaguar” | August 2012 | Confidential