Pentium G840 vs Ultra 7 155H

Primary details

Comparing Core Ultra 7 155H and Pentium G840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	424	2606
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	4.61
Market segment	Laptop	Desktop processor
Series	Intel Meteor Lake-H	no data
Power efficiency	53.44	1.16
Architecture codename	Meteor Lake-H (2023)	Sandy Bridge (2011−2013)
Release date	14 December 2023 (less than a year ago)	22 May 2011 (13 years ago)
Launch price (MSRP)	$503	$60

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core Ultra 7 155H and Pentium G840 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	16 (Hexadeca-Core)	2 (Dual-core)
Threads	22	2
Base clock speed	3.8 GHz	2.8 GHz
Boost clock speed	4.8 GHz	2.8 GHz
L1 cache	112 KB (per core)	64 KB (per core)
L2 cache	2 MB (per core)	256 KB (per core)
L3 cache	24 MB (shared)	3 MB (shared)
Chip lithography	Intel 4 nm	32 nm
Die size	no data	131 mm2
Maximum core temperature	110 °C	69 °C
Number of transistors	no data	504 million
64 bit support	+	+
Windows 11 compatibility	no data	-

Compatibility

Information on Core Ultra 7 155H and Pentium G840 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	FCBGA2049	FCLGA1155
Power consumption (TDP)	28 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 155H and Pentium G840. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	no data	-
Hyper-Threading Technology	+	-
TSX	+	-
Idle States	no data	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
Turbo Boost Max 3.0	+	no data
FDI	no data	+
Fast Memory Access	no data	+
Deep Learning Boost	+	-
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT	-

Security technologies

Core Ultra 7 155H and Pentium G840 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 7 155H and Pentium G840 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 155H and Pentium G840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5	DDR3
Maximum memory size	96 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	21 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ graphics	Intel HD Graphics for 2nd Generation Intel Processors
Quick Sync Video	+	-
Graphics max frequency	2.25 GHz	1.1 GHz

Graphics interfaces

Available interfaces and connections of Core Ultra 7 155H and Pentium G840 integrated GPUs.

Number of displays supported

4

2

Graphics image quality

Maximum display resolutions supported by Core Ultra 7 155H and Pentium G840 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)	no data
Max resolution over eDP	3840x2400 @ 120Hz	no data
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	no data

Graphics API support

APIs supported by Core Ultra 7 155H and Pentium G840 integrated GPUs, sometimes API versions are included.

DirectX	12.2	no data
OpenGL	4.6	no data

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 155H and Pentium G840.

PCIe version	5.0	2.0
PCI Express lanes	8	no data
PCI support	5.0 and 4.0	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	15.81	0.80
Recency	14 December 2023	22 May 2011
Physical cores	16	2
Threads	22	2
Power consumption (TDP)	28 Watt	65 Watt

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Should you still have questions on choice between Core Ultra 7 155H and Pentium G840, ask them in Comments section, and we shall answer.

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