AMD Athlon II X2 255, X3 440, X4 635, Phenom II X2 555, and X4 910e Review

ajmatson - January 24, 2010
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Specifications:

Model Number:	Athlon II X4 635	Athlon II X3 440	Athlon II X2 255	Phenom II X2 555	Phenom II X4 910e
Clock Frequency:	2.9GHz	3.0GHz	3.1GHz	3.2GHz	2.6GHz
Voltage:	0.875 - 1.425v	0.875 - 1.425v	0.875 - 1.425v	0.875 - 1.40v	0.85 - 1.25v
Max TDP:	95 watts	95 watts	65 watts	80 watts	65 Watts
Maximum Temp:	71C Degrees	73C Degrees	74C Degrees	70C Degrees	71C Degrees
Cache Size:	L1 Cache: 64K instruction and 64K data cache per core (384KB total L1 per processor) L2 Cache: 512KB per core (2MB total L2 per processor)	L1 Cache: 64K instruction and 64K data cache per core (256KB total L1 per processor) L2 Cache: 512KB per core (1.5MB total L2 per processor)	L1 Cache: 64K instruction and 64K data cache per core (256KB total L1 per processor) L2 Cache: 1MB per core (2MB total L2 per processor)	L1 Cache: 64K instruction and 64K data cache per core (256KB total L1 per processor) L2 Cache: 512KB per core (1MB total L2 per processor) L3 Cache: 6MB Shared	L1 Cache: 64K instruction and 64K data cache per core (256KB total L1 per processor) L2 Cache: 512KB per core (1MB total L2 per processor) L3 Cache: 6MB Shared
Process Technology:	45-nanometer DSL SOI (silicon-on-insulator) technology	45-nanometer DSL SOI (silicon-on-insulator) technology	45-nanometer DSL SOI (silicon-on-insulator) technology	45-nanometer DSL SOI (silicon-on-insulator) technology	45-nanometer DSL SOI (silicon-on-insulator) technology
HyperTransport Technology Links:	One 16-bit/16-bit link @ up to 4.0GHz full duplex (2.0GHz x2)	One 16-bit/16-bit link @ up to 4.0GHz full duplex (2.0GHz x2)	One 16-bit/16-bit link @ up to 4.0GHz full duplex (2.0GHz x2)	One 16-bit/16-bit link @ up to 4.0GHz full duplex (2.0GHz x2)	One 16-bit/16-bit link @ up to 4.0GHz full duplex (2.0GHz x2)
Memory:	Integrated 128-bit wide memory controller with speeds: Up to 2.0GHz with Dual Dynamic Power Management	Integrated 128-bit wide memory controller with speeds: Up to 2.0GHz with Dual Dynamic Power Management	Integrated 128-bit wide memory controller with speeds: Up to 2.0GHz with Dual Dynamic Power Management	Integrated 128-bit wide memory controller with speeds: Up to 2.0GHz with Dual Dynamic Power Management	Integrated 128-bit wide memory controller with speeds: Up to 2.0GHz with Dual Dynamic Power Management
Types of Memory:	support unregistered DIMMs up to PC2-8500 (DDR2-1066MHz) -AND- PC3-10600 (DDR3-1333MHz)	support unregistered DIMMs up to PC2-8500 (DDR2-1066MHz) -AND- PC3-10600 (DDR3-1333MHz)	support unregistered DIMMs up to PC2-8500 (DDR2-1066MHz) -AND- PC3-10600 (DDR3-1333MHz)	support unregistered DIMMs up to PC2-8500 (DDR2-1066MHz) -AND- PC3-10600 (DDR3-1333MHz)	support unregistered DIMMs up to PC2-8500 (DDR2-1066MHz) -AND- PC3-10600 (DDR3-1333MHz)
Die Size:	45nm = 169mm²	45nm = 169mm²	45nm = 117.5mm²	45nm = 258mm²	45nm = 258mm²
Transistors	45nm = ~300 million	45nm = ~300 million	45nm = ~234 million	45nm = ~758 million	45nm = ~758 million
Packaging:	Socket AM3 - 938-pin organic micro Pin Grid Array (micro-PGA) (Backwards compatable with AM2+ 940-pin)	Socket AM3 - 938-pin organic micro Pin Grid Array (micro-PGA) (Backwards compatable with AM2+ 940-pin)	Socket AM3 - 938-pin organic micro Pin Grid Array (micro-PGA) (Backwards compatable with AM2+ 940-pin)	Socket AM3 - 938-pin organic micro Pin Grid Array (micro-PGA) (Backwards compatable with AM2+ 940-pin)	Socket AM3 - 938-pin organic micro Pin Grid Array (micro-PGA) (Backwards compatable with AM2+ 940-pin)

Features:

True multi-core processing enables better multitasking so users can run more applications and do more in less time.
Direct Connect Architecture delivers leading-edge PC system performance.
Integrated memory controller supporting DDR2 and DDR3 memory.
HyperTransport™ 3.0 technology provides incredible system agility for improved 3D graphics performance.
AMD Balanced Smart Cache supports a better multi-tasking and multi-threaded experience.
AMD Wide Floating Point Accelerator to improve digital media and 3D gaming experiences.
AMD Memory Optimizer Technology helps improve performance of multi-threaded software.
AMD Digital Media Xpress™ 2.0 delivers sharper and more life-like 3D graphics.
AMD Virtualization™ with Rapid Virtualization Indexing helps virtualization software to run more securely and efficiently.
Cool ‘n’ Quiet™ 3.0 technology enables cooler and quieter platform designs by providing extremely efficient performance and energy usage.