EPYC 9555 vs Pentium B940

Primary details

Comparing Pentium B940 and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2868	6
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	3.05
Market segment	Laptop	Server
Series	Intel Pentium	no data
Power efficiency	1.47	22.02
Architecture codename	Sandy Bridge (2011−2013)	Turin (2024)
Release date	19 June 2011 (13 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	$134	$9,826

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium B940 and EPYC 9555 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)	64 (Tetrahexaconta-Core)
Threads	2	128
Base clock speed	2 GHz	3.2 GHz
Boost clock speed	2 GHz	4.4 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	no data
Multiplier	20	no data
L1 cache	64K (per core)	80 KB (per core)
L2 cache	256K (per core)	1 MB (per core)
L3 cache	2 MB (shared)	256 MB (shared)
Chip lithography	32 nm	4 nm
Die size	131 mm2	8x 70.6 mm2
Maximum core temperature	85 °C	no data
Number of transistors	504 million	66,520 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Pentium B940 and EPYC 9555 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	PGA988	SP5
Power consumption (TDP)	35 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium B940 and EPYC 9555. 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	-	+
FMA	+	-
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
My WiFi	-	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data
Precision Boost 2	no data	+

Security technologies

Pentium B940 and EPYC 9555 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium B940 and EPYC 9555 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 B940 and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for 2nd Generation Intel Processors	N/A
Graphics max frequency	1.1 GHz	no data

Graphics interfaces

Available interfaces and connections of Pentium B940 and EPYC 9555 integrated GPUs.

Number of displays supported	2	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
SDVO	+	no data
CRT	+	no data

Peripherals

Specifications and connection of peripherals supported by Pentium B940 and EPYC 9555.

PCIe version	2.0	5.0
PCI Express lanes	16	128

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	0.54	83.20
Recency	19 June 2011	10 October 2024
Physical cores	2	64
Threads	2	128
Chip lithography	32 nm	4 nm
Power consumption (TDP)	35 Watt	360 Watt

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Should you still have questions on choice between Pentium B940 and EPYC 9555, ask them in Comments section, and we shall answer.

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