Xeon E5-2650L v2 vs Core 2 Duo E8400

Place in the ranking	2671	1251
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Power efficiency	1.06	6.46
Architecture codename	Wolfdale (2008−2010)	Ivy Bridge-EP (2013)
Release date	1 January 2008 (16 years ago)	1 September 2013 (11 years ago)

Detailed specifications

Core 2 Duo E8400 and Xeon E5-2650L v2 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)	10 (Deca-Core)
Threads	2	20
Base clock speed	3 GHz	1.7 GHz
Boost clock speed	3 GHz	2.1 GHz
Bus rate	1333 MHz	7.2 GT/s
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	6 MB (shared)	256 KB (per core)
L3 cache	0 KB	25 MB (shared)
Chip lithography	45 nm	22 nm
Die size	104 mm²	160 mm²
Maximum core temperature	no data	65 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	410 million	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Duo E8400 and Xeon E5-2650L v2 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	LGA775	FCLGA2011
Power consumption (TDP)	65 Watt	70 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E8400 and Xeon E5-2650L v2. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AVX
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	-
Demand Based Switching	-	+
PAE	no data	46 Bit
FSB parity	-	no data

Security technologies

Core 2 Duo E8400 and Xeon E5-2650L v2 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo E8400 and Xeon E5-2650L v2 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Xeon E5-2650L v2. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR3
Maximum memory size	no data	768 GB
Max memory channels	no data	4
Maximum memory bandwidth	no data	51.2 GB/s
ECC memory support	-	+

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 Core 2 Duo E8400 and Xeon E5-2650L v2.

PCIe version	2.0	3.0
PCI Express lanes	no data	40

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 E8400 0.73

Xeon E5-2650L v2 4.78
+555%

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 E8400 1165

Xeon E5-2650L v2 7586
+551%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Duo E8400 370
+3.4%

Xeon E5-2650L v2 358

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Duo E8400 604

Xeon E5-2650L v2 2533
+319%

Gaming performance

Pros & cons summary

Performance score	0.73	4.78
Recency	1 January 2008	1 September 2013
Physical cores	2	10
Threads	2	20
Chip lithography	45 nm	22 nm
Power consumption (TDP)	65 Watt	70 Watt

Core 2 Duo E8400 has 7.7% lower power consumption.

Xeon E5-2650L v2, on the other hand, has a 554.8% higher aggregate performance score, an age advantage of 5 years, 400% more physical cores and 900% more threads, and a 104.5% more advanced lithography process.

The Xeon E5-2650L v2 is our recommended choice as it beats the Core 2 Duo E8400 in performance tests.

Note that Core 2 Duo E8400 is a desktop processor while Xeon E5-2650L v2 is a server/workstation one.

Should you still have questions on choice between Core 2 Duo E8400 and Xeon E5-2650L v2, ask them in Comments section, and we shall answer.