AMD Opteron™: Workstation: Understanding Model Numbers: 100 Series, 200 Series, 800 Series

		Shop AMD United States
		Partners
		Shop ATI
AMD Opteron™ Related Links
		Press Releases
		Partner Press Releases
		Awards
		Success Stories
		AMD Processor Support Forum
		Workstation Graphics

Understanding AMD Opteron™ Processor Model Numbers

Don’t Be Fooled, Get Educated...
Benchmarks are complex tools and should be considered carefully when making your IT purchase decisions. View our interactive presentation on what technology benchmarks really mean and how to decipher which ones are best suited to your particular IT needs.
View our online presentation now

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.

HE—indicates a 55W low-power AMD Opteron processor. Performance of a low-power
AMD Opteron processor HE model number, XYY, is equal to the performance of the same model number standard-power version. For example, an AMD Opteron processor Model 275 HE offers the same performance as a standard wattage AMD Opteron processor Model 275

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
Socket	Socket 939*	Socket 940	Socket 940
Performance	100 Series Benchmarks	200 Series Benchmarks	800 Series Benchmarks
Dual-Core Options
Frequency	Model Numbers
1.8GHz	Model 165	Model 265	Model 865
2.0GHz	Model 170	Model 270	Model 870
2.2GHz	Model 175	Model 275	Model 875
2.4 GHz	Model 180	Model 280	Model 880
2.6GHz	Model 185	Model 285	Model 885
Single-Core Options
Frequency	Model Numbers
1.6GHz	-	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
2.6GHz	Model 152	Model 252	Model 852
2.8GHz	Model 154	Model 254	Model 854
3.0GHz	Model 156	Model 256	Model 856
Low-Power Options
Dual-Core Low-Power Options
HE (55W) Frequency	Model Numbers
Dual-Core 1.6 GHz 55W	-	Model 260 HE	Model 860 HE
Dual-Core 1.8 GHz 55W	Model 165 HE*	Model 265 HE	Model 865 HE
Dual-Core 2.0 GHz 55W	-	Model 270 HE	Model 870 HE
Dual-Core 2.2 GHz 55W	-	Model 275 HE	Model 875 HE
Integrated memory controller	Yes	Yes	Yes
Single-Core Low-Power Options
HE (55W) Frequency	Model Numbers
2.0GHz 55W	-	Model 246 HE	Model 846 HE
2.2GHz 55W	Model 148 HE*	Model 248 HE	Model 848 HE
2.4GHz 55W	-	Model 250 HE	Model 850 HE
Integrated DDR Memory controller	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	16 bits x 16 bits	16 bits x 16 bits
HyperTransport bus frequency	1GHz	1GHz	1GHz
AMD64	Yes	Yes	Yes
Simultaneous 32 & 64-bit computing	Yes	Yes	Yes
L1 Cache Size (data/instruction)	64KB/ 64KB	64KB/ 64KB	64KB/ 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 TLB 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 / 4-way	4-way / 4-way	4-way / 4-way
Direct Connect Architecture	Yes	Yes	Yes
Process	90nm	90nm	90nm
Manufactured In	Fab 30, Dresden Germany	Fab 30, Dresden Germany	Fab 30, Dresden Germany
*Additional AMD Opteron processors are available as embedded processor models, including 100 Series Socket 940 processors, 55W HE and 30W EE models that may not be shown here. Please see Embedded Solutions for more details.