Pentium D 840 vs Athlon II X3 445

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Primary details

Comparing Athlon II X3 445 and Pentium D 840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2386not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.01no data
Market segmentDesktop processorDesktop processor
Power efficiency1.15no data
Architecture codenameRana (2009−2011)Smithfield (2005)
Release date11 May 2010 (14 years ago)May 2005 (19 years ago)
Launch price (MSRP)$91no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Athlon II X3 445 and Pentium D 840 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores3 (Tri-Core)2 (Dual-core)
Threads32
Base clock speed3.1 GHz3.2 GHz
Boost clock speed3.1 GHz3.2 GHz
L1 cache128 KB (per core)28 KB
L2 cache512 KB (per core)2 MB
L3 cache0 KB0 KB
Chip lithography45 nm90 nm
Die size169 mm2206 mm2
Maximum core temperatureno data70 °C
Number of transistors300 million169 million
64 bit support++
Windows 11 compatibility--
VID voltage rangeno data1.2V-1.4V

Compatibility

Information on Athlon II X3 445 and Pentium D 840 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration12
SocketAM3PLGA775
Power consumption (TDP)95 Watt130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II X3 445 and Pentium D 840. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
Idle Statesno data+
Demand Based Switchingno data-
PAEno data32 Bit
FSB parityno data-

Security technologies

Athlon II X3 445 and Pentium D 840 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X3 445 and Pentium D 840 are enumerated here.

VT-dno data-
VT-xno data-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X3 445 and Pentium D 840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR1, DDR2, DDR3

Peripherals

Specifications and connection of peripherals supported by Athlon II X3 445 and Pentium D 840.

PCIe version2.0no data

Pros & cons summary


Physical cores 3 2
Threads 3 2
Chip lithography 45 nm 90 nm
Power consumption (TDP) 95 Watt 130 Watt

Athlon II X3 445 has 50% more physical cores and 50% more threads, a 100% more advanced lithography process, and 36.8% lower power consumption.

We couldn't decide between Athlon II X3 445 and Pentium D 840. We've got no test results to judge.


Should you still have questions on choice between Athlon II X3 445 and Pentium D 840, ask them in Comments section, and we shall answer.

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AMD Athlon II X3 445
Athlon II X3 445
Intel Pentium D 840
Pentium D 840

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Community ratings

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3.5 208 votes

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