AMD Opteron™ Processor Model Numbers and Features ComparisonSee also: Processor Quick Reference Guide
AMD Opteron Processors are identified by a three digit model number, XYY, where:
X—indicates the maximum scalability of the processor. In other words:
100 Series = 1-way servers and workstations
200 Series = Up to 2-way servers and workstations
800 Series = Up to 8-way servers and workstations
YY—indicates relative performance within the series. In other words, an AMD Opteron Processor Model 244 is higher performing than an AMD Opteron Processor Model 242, etc.
Low-power AMD Opteron Processors are identified by a two character modifier, where:
HE—indicates a 55W processor within the series.
EE—indicates a 30W processor within the series.
The chart below further explains the differences between AMD Opteron Processor series and model numbers.
Series 100 Series 200 Series 800 Series Scalability 1-way Up to 2-way Up to 8-way Performance Frequency Model Numbers 1.4GHz Model 140 Model 240 Model 840 1.6GHz Model 142 Model 242 Model 842 1.8GHz Model 144 Model 244 Model 844 2.0GHz Model 146 Model 246 Model 846 2.2GHz Model 148 Model 248 Model 848 2.4GHz Model 150 Model 250 Model 850 Low-Power Options EE (30W) Frequency Model Numbers 1.4GHz Model 140 EE Model 240 EE Model 840 EE HE (55W) Frequency Model Numbers 2.0GHz Model 146 HE Model 246 HE Model 846 HE Integrated memory controller Yes Yes Yes Memory controller width 128-bit 128-bit 128-bit ECC DRAM protection Yes Yes Yes HyperTransport™ Technology Yes Yes Yes HyperTransport Links (total/coherent) 3/0 3/1 3/3 HyperTransport Link width 16 bits x
16 bits x
16 bits x
HyperTransport bus frequency 800MHz 800MHz 800MHz AMD64 Yes Yes Yes Simultaneous 32 & 64-bit computing Yes Yes Yes L1 Cache Size (data/instruction) 64KB/
L2 Cache Size 1MB 1MB 1MB Pipeline stages (integer/floating point) 12/17 12/17 12/17 L1/L2 data cache protection ECC ECC ECC L1/L2 instruction cache protection Parity Parity Parity Global History Counter Entries 16K 16K 16K L1 TLB entries (data/instruction) 40/40 40/40 40/40 L1 associativity (data/instruction) Full/Full Full/Full Full/Full L2 TLB entries (data/instruction) 512/512 512/512 512/512 L2 associativity (data/instruction) 4-way /
Direct Connect Architecture Yes Yes Yes Process .13 micron SOI .13 micron SOI .13 micron SOI Manufactured In Fab 30, Dresden Germany Fab 30, Dresden Germany Fab 30, Dresden Germany
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