Pentium G645 vs Celeron J4125

Primary details

Comparing Celeron J4125 and Pentium G645 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1984	2533
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.33	0.06
Market segment	Desktop processor	Desktop processor
Power efficiency	17.60	1.31
Architecture codename	Gemini Lake Refresh (2019)	Sandy Bridge (2011−2013)
Release date	4 November 2019 (5 years ago)	2 September 2012 (12 years ago)
Launch price (MSRP)	$107	$80

Cost-effectiveness evaluation

Performance per price, higher is better.

Celeron J4125 has 8783% better value for money than Pentium G645.

Detailed specifications

Celeron J4125 and Pentium G645 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	4	2
Base clock speed	2 GHz	2.9 GHz
Boost clock speed	2.7 GHz	2.9 GHz
Bus rate	no data	5 GT/s
L1 cache	56 KB (per core)	64 KB (per core)
L2 cache	4 MB (shared)	256 KB (per core)
L3 cache	4 MB	3 MB (shared)
Chip lithography	14 nm	32 nm
Die size	93 mm2	131 mm2
Maximum core temperature	105 °C	69 °C
Number of transistors	no data	504 million
64 bit support	+	+
Windows 11 compatibility	+	-

Compatibility

Information on Celeron J4125 and Pentium G645 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	FCBGA1090	FCLGA1155
Power consumption (TDP)	10 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron J4125 and Pentium G645. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE4.1, 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

Celeron J4125 and Pentium G645 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron J4125 and Pentium G645 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron J4125 and Pentium G645. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3
Maximum memory size	8 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	17 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 600	Intel® HD Graphics for 2nd Generation Intel® Processors
Max video memory	8 GB	no data
Quick Sync Video	+	-
Graphics max frequency	750 MHz	1.1 GHz
Execution Units	12	no data

Graphics interfaces

Available interfaces and connections of Celeron J4125 and Pentium G645 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Celeron J4125 and Pentium G645 integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by Celeron J4125 and Pentium G645 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.4	no data

Peripherals

Specifications and connection of peripherals supported by Celeron J4125 and Pentium G645.

PCIe version	2.0	2.0
PCI Express lanes	6	no data
USB revision	2.0/3.0	no data
Total number of SATA ports	2	no data
Max number of SATA 6 Gb/s Ports	2	no data
Number of USB ports	8	no data
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	1.86	0.90
Recency	4 November 2019	2 September 2012
Physical cores	4	2
Threads	4	2
Chip lithography	14 nm	32 nm
Power consumption (TDP)	10 Watt	65 Watt

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Should you still have questions on choice between Celeron J4125 and Pentium G645, ask them in Comments section, and we shall answer.

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