Pentium D 840 EE vs Pentium G645

Primary details

Comparing Pentium G645 and Pentium D 840 EE processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2549	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.06	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	1.31	no data
Architecture codename	Sandy Bridge (2011−2013)	Smithfield (2005)
Release date	2 September 2012 (12 years ago)	May 2005 (19 years ago)
Launch price (MSRP)	$80	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium G645 and Pentium D 840 EE 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	4
Base clock speed	2.9 GHz	no data
Boost clock speed	2.9 GHz	3.2 GHz
Bus rate	5 GT/s	no data
L1 cache	64 KB (per core)	28 KB
L2 cache	256 KB (per core)	2 MB
L3 cache	3 MB (shared)	0 KB
Chip lithography	32 nm	90 nm
Die size	131 mm2	206 mm2
Maximum core temperature	69 °C	no data
Number of transistors	504 million	169 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Pentium G645 and Pentium D 840 EE 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	1	2
Socket	FCLGA1155	775
Power consumption (TDP)	65 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G645 and Pentium D 840 EE. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Pentium G645 and Pentium D 840 EE 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 G645 and Pentium D 840 EE are enumerated here.

VT-d	-	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G645 and Pentium D 840 EE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	17 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for 2nd Generation Intel Processors	no data
Graphics max frequency	1.1 GHz	no data

Graphics interfaces

Available interfaces and connections of Pentium G645 and Pentium D 840 EE integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Pentium G645 and Pentium D 840 EE.

PCIe version

2.0

no data

Pros & cons summary

---

Threads	2	4
Chip lithography	32 nm	90 nm
Power consumption (TDP)	65 Watt	130 Watt

---

Should you still have questions on choice between Pentium G645 and Pentium D 840 EE, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---