Celeron 4205U vs Pentium G645

Place in the ranking	2549	2571
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.06	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Celeron
Power efficiency	1.31	5.43
Architecture codename	Sandy Bridge (2011−2013)	Whiskey Lake-U (2018−2019)
Release date	2 September 2012 (12 years ago)	23 January 2019 (5 years ago)
Launch price (MSRP)	$80	$107

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Pentium G645 and Celeron 4205U 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	2.9 GHz	no data
Boost clock speed	2.9 GHz	1.8 GHz
Bus type	no data	OPI
Bus rate	5 GT/s	4 GT/s
Multiplier	no data	18
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	3 MB (shared)	2 MB (shared)
Chip lithography	32 nm	14 nm
Die size	131 mm²	no data
Maximum core temperature	69 °C	100 °C
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Pentium G645 and Celeron 4205U 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 (Uniprocessor)
Socket	FCLGA1155	Intel BGA 1528
Power consumption (TDP)	65 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G645 and Celeron 4205U. You'll probably need this information if you require some particular technology.

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

Security technologies

Pentium G645 and Celeron 4205U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G645 and Celeron 4205U are enumerated here.

VT-d	-	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G645 and Celeron 4205U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3, DDR4
Maximum memory size	32 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	17 GB/s	38.397 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics for 2nd Generation Intel Processors	Intel HD Graphics 610 (300 - 900 MHz)
Graphics max frequency	1.1 GHz	no data

Graphics interfaces

Available interfaces and connections of Pentium G645 and Celeron 4205U integrated GPUs.

Number of displays supported

no data

Peripherals

Specifications and connection of peripherals supported by Pentium G645 and Celeron 4205U.

PCIe version	2.0	3.0
PCI Express lanes	no data	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.

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.

Pentium G645 0.90
+4.7%

Celeron 4205U 0.86

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Pentium G645 1429
+4.5%

Celeron 4205U 1367

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Pentium G645 454
+28.2%

Celeron 4205U 354

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Pentium G645 773
+28.8%

Celeron 4205U 600

Gaming performance

Pros & cons summary

Performance score	0.90	0.86
Integrated graphics card	0.77	1.85
Recency	2 September 2012	23 January 2019
Chip lithography	32 nm	14 nm
Power consumption (TDP)	65 Watt	15 Watt

Pentium G645 has a 4.7% higher aggregate performance score.

Celeron 4205U, on the other hand, has 140.3% faster integrated GPU, an age advantage of 6 years, a 128.6% more advanced lithography process, and 333.3% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Pentium G645 and Celeron 4205U.

Note that Pentium G645 is a desktop processor while Celeron 4205U is a notebook one.

Should you still have questions on choice between Pentium G645 and Celeron 4205U, ask them in Comments section, and we shall answer.