Ryzen 7 1800X vs Ultra 7 255H

Primary details

Comparing Core Ultra 7 255H and Ryzen 7 1800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	343	776
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	2.88
Market segment	Laptop	Desktop processor
Series	no data	AMD Ryzen 7
Power efficiency	14.93	10.24
Architecture codename	no data	Zen (2017−2020)
Release date	1 January 2025 (less than a year ago)	2 March 2017 (7 years ago)
Launch price (MSRP)	no data	$499

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core Ultra 7 255H and Ryzen 7 1800X 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)	8 (Octa-Core)
Performance-cores	6	no data
Efficient-cores	8	no data
Low Power Efficient-cores	2	no data
Threads	16	16
Base clock speed	no data	3.6 GHz
Boost clock speed	5.1 GHz	4 GHz
Bus rate	no data	4 × 8 GT/s
Multiplier	no data	36
L1 cache	no data	768 KB
L2 cache	no data	4096 KB
L3 cache	24 MB	16384 KB
Chip lithography	no data	14 nm
Die size	no data	192 mm2
Number of transistors	no data	4,800 million
64 bit support	+	+
Windows 11 compatibility	no data	-
Unlocked multiplier	-	+

Compatibility

Information on Core Ultra 7 255H and Ryzen 7 1800X 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	FCBGA2049	AM4
Power consumption (TDP)	115 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 255H and Ryzen 7 1800X. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	XFR, FMA3, SSE 4.2, AVX2, SMT
AES-NI	+	+
FMA	-	FMA3
AVX	-	+
Speed Shift	+	no data
Hyper-Threading Technology	-	no data
Thermal Monitoring	+	-
Turbo Boost Max 3.0	+	no data
XFR	-	+
SenseMI	-	+
Deep Learning Boost	+	-
Supported AI Software Frameworks	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN	-

Security technologies

Core Ultra 7 255H and Ryzen 7 1800X technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 7 255H and Ryzen 7 1800X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 255H and Ryzen 7 1800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-6400	DDR4
Maximum memory size	128 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	no data	42.671 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ 140T GPU	-
Quick Sync Video	+	-
Graphics max frequency	2.25 GHz	-

Graphics interfaces

Available interfaces and connections of Core Ultra 7 255H and Ryzen 7 1800X integrated GPUs.

Number of displays supported

4

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Graphics image quality

Maximum display resolutions supported by Core Ultra 7 255H and Ryzen 7 1800X 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)	-
Max resolution over eDP	3840x2400 @ 120Hz	-
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	-

Graphics API support

APIs supported by Core Ultra 7 255H and Ryzen 7 1800X integrated GPUs, sometimes API versions are included.

DirectX	12.2	-
OpenGL	4.6	-

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 255H and Ryzen 7 1800X.

PCIe version	no data	n/a
PCI Express lanes	28	20
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	18.02	10.21
Recency	1 January 2025	2 March 2017
Physical cores	16	8
Power consumption (TDP)	115 Watt	95 Watt

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Should you still have questions on choice between Core Ultra 7 255H and Ryzen 7 1800X, ask them in Comments section, and we shall answer.

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