Athlon II X4 620e vs Xeon E5-2643

Primary details

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

Place in the ranking	1835	2264
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.61	no data
Market segment	Server	Desktop processor
Power efficiency	0.97	1.56
Designer	Intel	AMD
Manufacturer	Intel	no data
Architecture codename	Sandy Bridge-EP (2012)	Propus (2009−2011)
Release date	6 March 2012 (13 years ago)	3 May 2011 (14 years ago)
Launch price (MSRP)	$218	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Performance to price scatter graph

Detailed specifications

Xeon E5-2643 and Athlon II X4 620e 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	4 (Quad-Core)	4 (Quad-Core)
Threads	8	4
Base clock speed	3.3 GHz	2.6 GHz
Boost clock speed	3.5 GHz	2.6 GHz
Bus rate	8 GT/s	no data
L1 cache	64 KB (per core)	128 KB (per core)
L2 cache	256 KB (per core)	512 KB (per core)
L3 cache	10240 KB (shared)	0 KB
Chip lithography	32 nm	45 nm
Die size	294 mm2	169 mm2
Maximum core temperature	73 °C	no data
Number of transistors	1,270 million	300 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2643 and Athlon II X4 620e 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	2	1
Socket	FCLGA2011	AM3
Power consumption (TDP)	130 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2643 and Athlon II X4 620e. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5-2643 and Athlon II X4 620e 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 Xeon E5-2643 and Athlon II X4 620e 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 Xeon E5-2643 and Athlon II X4 620e. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	384 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	51.2 GB/s	no data
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2643 and Athlon II X4 620e.

PCIe version	3.0	2.0
PCI Express lanes	40	no data

Synthetic benchmarks

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

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Combined synthetic benchmark score

This is our combined benchmark performance rating.

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Pros & cons summary

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Performance score	2.96	1.65
Recency	6 March 2012	3 May 2011
Threads	8	4
Chip lithography	32 nm	45 nm
Power consumption (TDP)	130 Watt	45 Watt

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