i7-3520M vs i7-5820K

Primary details

Comparing Core i7-5820K and Core i7-3520M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1071	1999
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.10	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i7
Power efficiency	4.19	4.87
Architecture codename	Haswell-E (2014)	Ivy Bridge (2012−2013)
Release date	1 September 2014 (10 years ago)	3 June 2012 (12 years ago)
Launch price (MSRP)	$410	$346

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-5820K and Core i7-3520M 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	6 (Hexa-Core)	2 (Dual-core)
Threads	12	4
Base clock speed	3.3 GHz	2.9 GHz
Boost clock speed	3.6 GHz	3.6 GHz
Bus rate	0 GT/s	5 GT/s
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	256K (per core)
L3 cache	15 MB (shared)	4 MB (shared)
Chip lithography	22 nm	22 nm
Die size	356 mm2	118 mm2
Maximum core temperature	67 °C	105 °C
Number of transistors	2,600 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-5820K and Core i7-3520M 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	1
Socket	FCLGA2011	FCBGA1023,FCPGA988
Power consumption (TDP)	140 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5820K and Core i7-3520M. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX2	Intel® AVX
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Smart Response	+	no data
Demand Based Switching	-	-
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

Core i7-5820K and Core i7-3520M technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
Identity Protection	+	+
Anti-Theft	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5820K and Core i7-3520M are enumerated here.

AMD-V	-	+
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-5820K and Core i7-3520M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3
Maximum memory size	64 GB	32 GB
Max memory channels	4	2
Maximum memory bandwidth	68 GB/s	25.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel HD Graphics 4000
Quick Sync Video	-	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.25 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i7-5820K and Core i7-3520M integrated GPUs.

Number of displays supported	no data	3
eDP	no data	+
DisplayPort	-	+
HDMI	-	+
SDVO	no data	+
CRT	no data	+

Peripherals

Specifications and connection of peripherals supported by Core i7-5820K and Core i7-3520M.

PCIe version	3.0	3.0
PCI Express lanes	28	16

Synthetic benchmark performance

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. 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.

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Pros & cons summary

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Performance score	6.43	1.87
Recency	1 September 2014	3 June 2012
Physical cores	6	2
Threads	12	4
Power consumption (TDP)	140 Watt	35 Watt

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Should you still have questions on choice between Core i7-5820K and Core i7-3520M, ask them in Comments section, and we shall answer.

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