Athlon II X2 250u vs Core 2 Duo E4400

Place in the ranking	2929	3016
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	0.66	1.44
Architecture codename	Allendale (2006−2009)	Regor (2009−2013)
Release date	July 2007 (17 years ago)	20 October 2009 (15 years ago)
Launch price (MSRP)	no data	$35

Detailed specifications

Core 2 Duo E4400 and Athlon II X2 250u 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	2 GHz	no data
Boost clock speed	2 GHz	1.6 GHz
Bus rate	800 MHz	no data
L1 cache	64 KB	128 KB
L2 cache	2 MB	1 MB
L3 cache	0 KB	0 KB
Chip lithography	65 nm	45 nm
Die size	111 mm²	117 mm²
Maximum core temperature	L2=61 °C, M0=73 °C	no data
Number of transistors	167 million	410 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.5V	no data

Compatibility

Information on Core 2 Duo E4400 and Athlon II X2 250u 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	AM3
Power consumption (TDP)	65 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E4400 and Athlon II X2 250u. 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
FSB parity	-	no data

Security technologies

Core 2 Duo E4400 and Athlon II X2 250u 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 Core 2 Duo E4400 and Athlon II X2 250u are enumerated here.

VT-x

no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E4400 and Athlon II X2 250u. 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

On certain motherboards (Chipset feature)

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E4400 and Athlon II X2 250u.

PCIe version

no data

2.0

Synthetic benchmark performance

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

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Duo E4400 0.45
+18.4%

Athlon II X2 250u 0.38

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Core 2 Duo E4400 718
+20.1%

Athlon II X2 250u 598