Pentium M 740 vs Pentium D 820

Primary details

Comparing Pentium D 820 and Pentium M 740 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	Pentium D	Pentium M
Architecture codename	Smithfield (2005)	Dothan (2004−2005)
Release date	May 2005 (19 years ago)	January 2005 (19 years ago)
Current price	$134	$62

Detailed specifications

Pentium D 820 and Pentium M 740 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)	1 (Single-Core)
Threads	2	1
Base clock speed	2.8 GHz	1.73 GHz
Boost clock speed	2.8 GHz	1.73 GHz
Bus support	800 MHz	533 MHz
L1 cache	28 KB	32 KB
L2 cache	2 MB	2 MB
L3 cache	0 KB	0 KB
Chip lithography	90 nm	90 nm
Die size	206 mm2	84 mm2
Maximum core temperature	64 °C	100 °C
Number of transistors	169 million	140 million
64 bit support	+	-
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	1.2V-1.4V	1.26V-1.356V

Compatibility

Information on Pentium D 820 and Pentium M 740 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	PPGA478, H-PBGA479
Power consumption (TDP)	95 Watt	27 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 820 and Pentium M 740. You'll probably need this information if you require some particular technology.

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

Security technologies

Pentium D 820 and Pentium M 740 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 820 and Pentium M 740 are enumerated here.

VT-d	-	no data
VT-x	-	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Pentium M 740. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	no data
ECC memory support	-	-

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Pros & cons summary

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Physical cores	2	1
Threads	2	1
Power consumption (TDP)	95 Watt	27 Watt

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Should you still have questions on choice between Pentium D 820 and Pentium M 740, ask them in Comments section, and we shall answer.

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