Athlon II X2 250u vs Pentium D 840

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	3276
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	no data	0.59
Designer	Intel	AMD
Architecture codename	Smithfield (2005)	Regor (2009−2013)
Release date	May 2005 (20 years ago)	20 October 2009 (16 years ago)
Launch price (MSRP)	no data	$35

Detailed specifications

Pentium D 840 and Athlon II X2 250u 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 cores	2 (Dual-core)	2 (Dual-core)
Threads	2	2
Base clock speed	3.2 GHz	no data
Boost clock speed	3.2 GHz	1.6 GHz
L1 cache	28 KB	128 KB
L2 cache	2 MB	1 MB
L3 cache	0 KB	0 KB
Chip lithography	90 nm	45 nm
Die size	206 mm2	117 mm2
Maximum core temperature	70 °C	no data
Number of transistors	169 million	410 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.2V-1.4V	no data

Compatibility

Information on Pentium D 840 and Athlon II X2 250u 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 configuration	2	1
Socket	PLGA775	AM3
Power consumption (TDP)	130 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 840 and Athlon II X2 250u. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Demand Based Switching	-	no data
PAE	32 Bit	no data
FSB parity	-	no data

Security technologies

Pentium D 840 and Athlon II X2 250u technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 840 and Athlon II X2 250u are enumerated here.

VT-d	-	no data
VT-x	-	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 840 and Athlon II X2 250u. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

On certain motherboards (Chipset feature)

Peripherals

Specifications and connection of peripherals supported by Pentium D 840 and Athlon II X2 250u.

PCIe version

no data

2.0

Pros & cons summary

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Chip lithography	90 nm	45 nm
Power consumption (TDP)	130 Watt	25 Watt

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