Atom E645CT vs Celeron E3400

Primary details

Comparing Celeron E3400 and Atom E645CT processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2830	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.72	no data
Market segment	Desktop processor	Laptop
Power efficiency	0.80	no data
Architecture codename	Wolfdale (2008−2010)	Stellarton (2010)
Release date	17 January 2010 (14 years ago)	22 November 2010 (14 years ago)
Launch price (MSRP)	$76	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Celeron E3400 and Atom E645CT 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	2.6 GHz	no data
Boost clock speed	2.6 GHz	1 GHz
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	1 MB (shared)	512 KB (per core)
L3 cache	0 KB	0 KB
Chip lithography	45 nm	45 nm
Die size	82 mm2	26 mm2
Maximum core temperature	74 °C	no data
Number of transistors	228 million	47 million
64 bit support	+	-
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Celeron E3400 and Atom E645CT 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	Intel BGA1466
Power consumption (TDP)	65 Watt	4 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron E3400 and Atom E645CT. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	+
Idle States	+	no data
Thermal Monitoring	+	-

Security technologies

Celeron E3400 and Atom E645CT 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 Celeron E3400 and Atom E645CT are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron E3400 and Atom E645CT. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel GMA 600

Peripherals

Specifications and connection of peripherals supported by Celeron E3400 and Atom E645CT.

PCIe version

2.0

no data

Pros & cons summary

---

Recency	17 January 2010	22 November 2010
Physical cores	2	1
Power consumption (TDP)	65 Watt	4 Watt

---

Should you still have questions on choice between Celeron E3400 and Atom E645CT, 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.

---