i3-3120M vs i7-3820

Primary details

Comparing Core i7-3820 and Core i3-3120M processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1458	2372
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
Architecture codename	Sandy Bridge-E (2011−2013)	Ivy Bridge (2012−2013)
Release date	February 2012 (12 years ago)	1 October 2012 (11 years ago)
Launch price (MSRP)	$400	$160

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-3820 and Core i3-3120M 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	2.5 GHz
Boost clock speed	3.8 GHz	2.5 GHz
Bus rate	5 GT/s	5 GT/s
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	10240 KB (shared)	3 MB
Chip lithography	32 nm	22 nm
Die size	294 mm2	118 mm2
Maximum core temperature	no data	90C (PGA); 105C (BGA)
Maximum case temperature (TCase)	67 °C	no data
Number of transistors	1270 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-3820 and Core i3-3120M 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)	130 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3820 and Core i3-3120M. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i7-3820 and Core i3-3120M technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3820 and Core i3-3120M 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 i3-3120M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	64.23 GB	32 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 4000
Quick Sync Video	-	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.1 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i7-3820 and Core i3-3120M 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 i7-3820 and Core i3-3120M.

PCIe version	2.0	2.0
PCI Express lanes	40	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.

Pros & cons summary

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Performance score	3.73	1.10
Physical cores	4	2
Threads	8	4
Chip lithography	32 nm	22 nm
Power consumption (TDP)	130 Watt	35 Watt

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Should you still have questions on choice between Core i7-3820 and Core i3-3120M, ask them in Comments section, and we shall answer.

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