Celeron 1047UE vs Pentium D 840

Primary details

Comparing Pentium D 840 and Celeron 1047UE processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	no data	Intel Celeron
Architecture codename	Smithfield (2005)	Ivy Bridge (2012−2013)
Release date	May 2005 (19 years ago)	20 January 2013 (11 years ago)
Launch price (MSRP)	no data	$134

Detailed specifications

Pentium D 840 and Celeron 1047UE 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	1.4 GHz
L1 cache	28 KB	64K (per core)
L2 cache	2 MB	256K (per core)
L3 cache	0 KB	2 MB (shared)
Chip lithography	90 nm	22 nm
Die size	206 mm2	118 mm2
Maximum core temperature	70 °C	105 °C
Maximum case temperature (TCase)	no data	105 °C
Number of transistors	169 million	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.2V-1.4V	no data

Compatibility

Information on Pentium D 840 and Celeron 1047UE 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	Intel BGA1023
Power consumption (TDP)	130 Watt	17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 840 and Celeron 1047UE. You'll probably need this information if you require some particular technology.

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

Security technologies

Pentium D 840 and Celeron 1047UE technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 840 and Celeron 1047UE are enumerated here.

VT-d	-	no data
VT-x	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 840 and Celeron 1047UE. 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

Intel HD Graphics (Ivy Bridge)

Pros & cons summary

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Chip lithography	90 nm	22 nm
Power consumption (TDP)	130 Watt	17 Watt

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Should you still have questions on choice between Pentium D 840 and Celeron 1047UE, ask them in Comments section, and we shall answer.

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