Celeron N4020 vs Pentium G840

Primary details

Comparing Pentium G840 and Celeron N4020 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2609	2470
Place by popularity	not in top-100	83
Cost-effectiveness evaluation	4.61	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Gemini Lake
Power efficiency	1.15	15.35
Architecture codename	Sandy Bridge (2011−2013)	Gemini Lake Refresh (2019)
Release date	22 May 2011 (13 years ago)	4 November 2019 (5 years ago)
Launch price (MSRP)	$60	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium G840 and Celeron N4020 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	2 (Dual-core)	2 (Dual-core)
Threads	2	2
Base clock speed	2.8 GHz	1.1 GHz
Boost clock speed	2.8 GHz	2.8 GHz
Bus rate	no data	15 MHz
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	4 MB
L3 cache	3 MB (shared)	4 MB
Chip lithography	32 nm	14 nm
Die size	131 mm2	no data
Maximum core temperature	69 °C	105 °C
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Pentium G840 and Celeron N4020 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	FCLGA1155	FCBGA1090
Power consumption (TDP)	65 Watt	6 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G840 and Celeron N4020. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.2
AES-NI	+	+
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	-
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Smart Response	no data	-
GPIO	no data	+
Turbo Boost Max 3.0	no data	-
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Pentium G840 and Celeron N4020 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	+
Secure Key	no data	+
MPX	-	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+
Anti-Theft	no data	-

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G840 and Celeron N4020 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G840 and Celeron N4020. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4
Maximum memory size	32 GB	8 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	Intel UHD Graphics 600
Max video memory	no data	8 GB
Quick Sync Video	-	+
Graphics max frequency	1.1 GHz	650 MHz
Execution Units	no data	12

Graphics interfaces

Available interfaces and connections of Pentium G840 and Celeron N4020 integrated GPUs.

Number of displays supported	2	3
eDP	no data	+
DisplayPort	-	+
HDMI	-	+
MIPI-DSI	no data	+

Graphics image quality

Maximum display resolutions supported by Pentium G840 and Celeron N4020 integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096x2160@30Hz
Max resolution over eDP	no data	4096x2160@60Hz
Max resolution over DisplayPort	no data	4096x2160@60Hz

Graphics API support

APIs supported by Pentium G840 and Celeron N4020 integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.4

Peripherals

Specifications and connection of peripherals supported by Pentium G840 and Celeron N4020.

PCIe version	2.0	2.0
PCI Express lanes	no data	6
USB revision	no data	2.0/3.0
Total number of SATA ports	no data	2
Max number of SATA 6 Gb/s Ports	no data	2
Number of USB ports	no data	8
Integrated LAN	no data	-
UART	no data	+

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	0.82	1.01
Recency	22 May 2011	4 November 2019
Chip lithography	32 nm	14 nm
Power consumption (TDP)	65 Watt	6 Watt

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Should you still have questions on choice between Pentium G840 and Celeron N4020, ask them in Comments section, and we shall answer.

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