Intel Xeon E5-4640 vs E5-1620 v3

Price now 673$
Games supported 94%
Intel Xeon E5-4640
Intel Xeon E5-4640
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Intel Xeon E5-1620 v3
Intel Xeon E5-1620 v3
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Price now 21$
Games supported 94%

General info

Comparing Xeon E5-4640 and Xeon E5-1620 v3 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance rating982984
Value for money0.456.95
Market segmentServerServer
Architecture codenameSandy Bridge-EP (2012)Haswell-EP (2014)
Release date14 May 2012 (10 years ago)8 September 2014 (8 years ago)
Launch price (MSRP)$2,730no data
Current price$673 (0.2x MSRP)$21
Value for money

To get the index we compare the characteristics of the processors and their cost, taking into account the cost of other processors.

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Technical specs

Xeon E5-4640 and Xeon E5-1620 v3 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 cores8 (Octa-Core)4 (Quad-Core)
Base clock speed2.4 GHz3.5 GHz
Boost clock speed2.8 GHz3.6 GHz
L1 cache64 KB (per core)64K (per core)
L2 cache256 KB (per core)256K (per core)
L3 cache20480 KB (shared)10 MB (shared)
Chip lithography32 nm22 nm
Die size435 mm2356 mm2
Maximum core temperatureno data66 °C
Number of transistors2,270 million2,600 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier--


Information on Xeon E5-4640 and Xeon E5-1620 v3 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 configuration41
Thermal design power (TDP)95 Watt140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-4640 and Xeon E5-1620 v3. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® AVXIntel® AVX2
Enhanced SpeedStep (EIST)++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSXno data-
TSXno data+
Idle States++
Thermal Monitoring++
Flex Memory Access+-
Demand Based Switching++
PAEno data46 Bit

Security technologies

Xeon E5-4640 and Xeon E5-1620 v3 technologies aimed at improving security, for example, by protecting against hacks.

Secure Keyno data+
Identity Protectionno data+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-4640 and Xeon E5-1620 v3 are enumerated here.


Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-4640 and Xeon E5-1620 v3. Depending on the motherboards, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4-1333, DDR4-1600, DDR4-1866, DDR4-2133
Maximum memory size384 GB768 GB
Max memory channels44
Maximum memory bandwidth51.2 GB/s68 GB/s
ECC memory support++


Specifications and connection of peripherals supported by Xeon E5-4640 and Xeon E5-1620 v3.

PCIe version3.03.0
PCI Express lanes4040

Benchmark performance

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

Overall 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 E5-4640 6.96
Xeon E5-1620 v3 6.94
  • 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.

Benchmark coverage: 69%

Xeon E5-4640 7012
Xeon E5-1620 v3 7001

Gaming performance

Advantages and disadvantages

Performance rating 6.96 6.94
Recency 14 May 2012 8 September 2014
Boost clock speed 2800 3600
Base clock speed 2400 3500
Chip lithography 32 nm 22 nm
Thermal design power (TDP) 95 Watt 140 Watt

Technical City couldn't decide between

Intel Xeon E5-4640
Intel Xeon E5-4640


Intel Xeon E5-1620 v3
Intel Xeon E5-1620 v3

The differences in performance seem too small.

Should you still have questions on choice between Xeon E5-4640 and Xeon E5-1620 v3, ask them in Comments section, and we shall answer.

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User rating

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Questions and comments

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