i3-5005U vs i7-3820

Primary details

Comparing Core i7-3820 and Core i3-5005U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1490	2281
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.32	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i3
Power efficiency	2.64	8.01
Architecture codename	Sandy Bridge-E (2011−2013)	Broadwell-U (2015)
Release date	February 2012 (12 years ago)	1 March 2015 (9 years ago)
Launch price (MSRP)	$400	$275

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-3820 and Core i3-5005U 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)	2 (Dual-core)
Threads	8	4
Base clock speed	3.6 GHz	2 GHz
Boost clock speed	3.8 GHz	2 GHz
Bus rate	5 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	10240 KB (shared)	3 MB (shared)
Chip lithography	32 nm	14 nm
Die size	294 mm2	82 mm2
Maximum core temperature	no data	105 °C
Maximum case temperature (TCase)	67 °C	105 °C
Number of transistors	1270 million	1300 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-3820 and Core i3-5005U 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	FCBGA1168
Power consumption (TDP)	130 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3820 and Core i3-5005U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Smart Response	+	+
Demand Based Switching	-	no data
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

Core i7-3820 and Core i3-5005U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Secure Key	no data	+
Identity Protection	+	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3820 and Core i3-5005U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3820 and Core i3-5005U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	64.23 GB	16 GB
Max memory channels	4	2
Maximum memory bandwidth	51.2 GB/s	25.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel HD Graphics 5500
Max video memory	no data	16 GB
Quick Sync Video	-	+
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	850 MHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i7-3820 and Core i3-5005U integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Core i7-3820 and Core i3-5005U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	2560x1600@60Hz
Max resolution over DisplayPort	no data	3840x2160@60Hz
Max resolution over VGA	no data	N/A

Graphics API support

APIs supported by Core i7-3820 and Core i3-5005U integrated GPUs, sometimes API versions are included.

DirectX	no data	11.2/12
OpenGL	no data	4.3

Peripherals

Specifications and connection of peripherals supported by Core i7-3820 and Core i3-5005U.

PCIe version	2.0	2.0
PCI Express lanes	40	12

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	3.63	1.27
Physical cores	4	2
Threads	8	4
Chip lithography	32 nm	14 nm
Power consumption (TDP)	130 Watt	15 Watt

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Should you still have questions on choice between Core i7-3820 and Core i3-5005U, ask them in Comments section, and we shall answer.

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