EPYC 9745 vs i5-2550K

Primary details

Comparing Core i5-2550K and EPYC 9745 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1720	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.65	no data
Market segment	Desktop processor	Server
Power efficiency	2.59	no data
Architecture codename	Sandy Bridge (2011−2013)	Turin (2024)
Release date	January 2012 (12 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	$189	$12,141

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-2550K and EPYC 9745 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	4 (Quad-Core)	128
Threads	4	256
Base clock speed	3.4 GHz	2.4 GHz
Boost clock speed	3.8 GHz	3.7 GHz
Bus rate	5 GT/s	no data
L1 cache	64 KB (per core)	80 KB (per core)
L2 cache	256 KB (per core)	1 MB (per core)
L3 cache	6144 KB (shared)	256 MB (shared)
Chip lithography	32 nm	3 nm
Die size	216 mm2	no data
Maximum core temperature	73 °C	no data
Number of transistors	1160 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i5-2550K and EPYC 9745 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	2
Socket	FCLGA1155,LGA1155	SP5
Power consumption (TDP)	95 Watt	400 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-2550K and EPYC 9745. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX	no data
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	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
Precision Boost 2	no data	+

Security technologies

Core i5-2550K and EPYC 9745 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Identity Protection	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-2550K and EPYC 9745 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 i5-2550K and EPYC 9745. Depending on the motherboard, higher memory frequencies may be supported.

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

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	N/A
Quick Sync Video	+	-

Peripherals

Specifications and connection of peripherals supported by Core i5-2550K and EPYC 9745.

PCIe version	2.0	5.0
PCI Express lanes	16	128

Pros & cons summary

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Physical cores	4	128
Threads	4	256
Chip lithography	32 nm	3 nm
Power consumption (TDP)	95 Watt	400 Watt

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Should you still have questions on choice between Core i5-2550K and EPYC 9745, ask them in Comments section, and we shall answer.

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