Pentium 4 HT 640 vs Pentium E5400

Primary details

Comparing Pentium E5400 and Pentium 4 HT 640 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2781	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	8.46	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	0.89	no data
Architecture codename	Wolfdale (2008−2010)	Prescott (2001−2005)
Release date	18 January 2009 (15 years ago)	February 2005 (19 years ago)
Launch price (MSRP)	$55	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium E5400 and Pentium 4 HT 640 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	2
Base clock speed	2.7 GHz	no data
Boost clock speed	2.7 GHz	3.2 GHz
L1 cache	64 KB (per core)	28 KB
L2 cache	2 MB (shared)	2 MB
L3 cache	0 KB	0 KB
Chip lithography	45 nm	90 nm
Die size	82 mm2	109 mm2
Maximum core temperature	74 °C	no data
Number of transistors	228 million	169 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Pentium E5400 and Pentium 4 HT 640 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	1
Socket	LGA775	775
Power consumption (TDP)	65 Watt	84 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium E5400 and Pentium 4 HT 640. 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
Thermal Monitoring	+	-
Demand Based Switching	-	no data

Security technologies

Pentium E5400 and Pentium 4 HT 640 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 E5400 and Pentium 4 HT 640 are enumerated here.

VT-d

-

no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium E5400 and Pentium 4 HT 640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR1, DDR2, DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

no data

Peripherals

Specifications and connection of peripherals supported by Pentium E5400 and Pentium 4 HT 640.

PCIe version

2.0

no data

Pros & cons summary

---

Physical cores	2	1
Chip lithography	45 nm	90 nm
Power consumption (TDP)	65 Watt	84 Watt

---

Should you still have questions on choice between Pentium E5400 and Pentium 4 HT 640, 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.

---