EPYC 9255 vs Pentium U5400

Primary details

Comparing Pentium U5400 and EPYC 9255 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	3062	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	Intel Pentium	no data
Power efficiency	1.83	no data
Architecture codename	Arrandale (2010−2011)	Turin (2024)
Release date	25 May 2010 (14 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$2,495

Detailed specifications

Pentium U5400 and EPYC 9255 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)	24 (Tetracosa-Core)
Threads	2	48
Base clock speed	1.2 GHz	3.25 GHz
Boost clock speed	1.2 GHz	4.8 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	no data
Multiplier	9	no data
L1 cache	64K (per core)	80 KB (per core)
L2 cache	256K (per core)	1 MB (per core)
L3 cache	3 MB (shared)	128 MB (shared)
Chip lithography	32 nm	4 nm
Die size	81+114 mm2	4x 70.6 mm2
Maximum core temperature	105 °C	no data
Number of transistors	384 million	33,260 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Pentium U5400 and EPYC 9255 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 (Uniprocessor)	2
Socket	BGA1288	SP5
Power consumption (TDP)	18 Watt	200 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium U5400 and EPYC 9255. You'll probably need this information if you require some particular technology.

AES-NI	-	+
FMA	+	-
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
PAE	36 Bit	no data
FDI	+	no data
Fast Memory Access	+	no data
Precision Boost 2	no data	+

Security technologies

Pentium U5400 and EPYC 9255 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 U5400 and EPYC 9255 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium U5400 and EPYC 9255. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	12.799 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for Previous Generation Intel Processors	N/A
Clear Video	+	no data
Graphics max frequency	500 MHz	no data

Graphics interfaces

Available interfaces and connections of Pentium U5400 and EPYC 9255 integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Pentium U5400 and EPYC 9255.

PCIe version	2.0	5.0
PCI Express lanes	16	128

Pros & cons summary

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Recency	25 May 2010	10 October 2024
Physical cores	2	24
Threads	2	48
Chip lithography	32 nm	4 nm
Power consumption (TDP)	18 Watt	200 Watt

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