Xeon E7-8857 v2 vs E5-2640 v3

Place in the ranking	997	227
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Power efficiency	7.37	16.64
Architecture codename	Haswell-EP (2014−2015)	no data
Release date	8 September 2014 (10 years ago)	1 January 2014 (10 years ago)

Detailed specifications

Xeon E5-2640 v3 and Xeon E7-8857 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	8 (Octa-Core)	12 (Dodeca-Core)
Threads	16	12
Base clock speed	2.6 GHz	3 GHz
Boost clock speed	3.4 GHz	3.6 GHz
Bus rate	8 GT/s	8 GT/s
L1 cache	64K (per core)	no data
L2 cache	256K (per core)	no data
L3 cache	20 MB (shared)	30 MB
Chip lithography	22 nm	22 nm
Die size	356 mm²	no data
Maximum core temperature	74 °C	73 °C
Number of transistors	2,600 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2640 v3 and Xeon E7-8857 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	2	8
Socket	FCLGA2011	FCLGA2011
Power consumption (TDP)	90 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2640 v3 and Xeon E7-8857 v2. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® AVX
AES-NI	+	+
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	-	no data
Demand Based Switching	+	no data
PAE	46 Bit	46 Bit

Security technologies

Xeon E5-2640 v3 and Xeon E7-8857 v2 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2640 v3 and Xeon E7-8857 v2 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2640 v3 and Xeon E7-8857 v2. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866	DDR3-1066, DDR3-1333, DDR3-1600
Maximum memory size	768 GB	1.5 TB
Max memory channels	4	4
Maximum memory bandwidth	59 GB/s	85 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2640 v3 and Xeon E7-8857 v2.

PCIe version	3.0	3.0
PCI Express lanes	40	32

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.

Xeon E5-2640 v3 7.14

Xeon E7-8857 v2 23.29
+226%

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.

Xeon E5-2640 v3 11128

Xeon E7-8857 v2 36304
+226%