Phenom II X4 945 (125W) vs Xeon E5-2640 v3

Primary details

Comparing Xeon E5-2640 v3 and Phenom II X4 945 (125W) processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	998	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Power efficiency	7.37	no data
Architecture codename	Haswell-EP (2014−2015)	Deneb (2009−2011)
Release date	8 September 2014 (10 years ago)	23 April 2009 (15 years ago)

Detailed specifications

Xeon E5-2640 v3 and Phenom II X4 945 (125W) 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	8 (Octa-Core)	4 (Quad-Core)
Threads	16	4
Base clock speed	2.6 GHz	3 GHz
Boost clock speed	3.4 GHz	3 GHz
Bus rate	8 GT/s	no data
L1 cache	64K (per core)	128 KB (per core)
L2 cache	256K (per core)	512 KB (per core)
L3 cache	20 MB (shared)	6 MB (shared)
Chip lithography	22 nm	45 nm
Die size	356 mm2	258 mm2
Maximum core temperature	74 °C	no data
Number of transistors	2,600 million	758 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2640 v3 and Phenom II X4 945 (125W) 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)	90 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2640 v3 and Phenom II X4 945 (125W). You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	no data
AES-NI	+	-
AVX	+	-
vPro	+	no data
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
PAE	46 Bit	no data

Security technologies

Xeon E5-2640 v3 and Phenom II X4 945 (125W) technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2640 v3 and Phenom II X4 945 (125W) are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2640 v3 and Phenom II X4 945 (125W). Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866	DDR3
Maximum memory size	768 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	59 GB/s	no data
ECC memory support	+	-

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 Xeon E5-2640 v3 and Phenom II X4 945 (125W).

PCIe version	3.0	2.0
PCI Express lanes	40	no data

Pros & cons summary

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Recency	8 September 2014	23 April 2009
Physical cores	8	4
Threads	16	4
Chip lithography	22 nm	45 nm
Power consumption (TDP)	90 Watt	125 Watt

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