EPYC 7443P vs i5-661

Primary details

Comparing Core i5-661 and EPYC 7443P processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2110	102
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.08	22.93
Market segment	Desktop processor	Server
Series	no data	AMD EPYC
Power efficiency	1.69	17.01
Architecture codename	Clarkdale (2010−2011)	Milan (2021−2023)
Release date	7 January 2010 (14 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	$252	$1,337

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7443P has 28563% better value for money than i5-661.

Detailed specifications

Core i5-661 and EPYC 7443P 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	4	48
Base clock speed	3.33 GHz	2.85 GHz
Boost clock speed	3.6 GHz	4 GHz
Bus rate	2.5 GT/s	no data
Multiplier	no data	28.5
L1 cache	64 KB (per core)	1536 KB
L2 cache	256 KB (per core)	12 MB
L3 cache	4 MB (shared)	128 MB (shared)
Chip lithography	32 nm	7 nm+
Die size	81 mm2	4x 81 mm2
Maximum core temperature	70 °C	no data
Number of transistors	382 million	16,600 million
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Core i5-661 and EPYC 7443P 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	FCLGA1156	SP3
Power consumption (TDP)	87 Watt	200 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-661 and EPYC 7443P. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Demand Based Switching	-	no data
PAE	36 Bit	no data
FDI	+	no data

Security technologies

Core i5-661 and EPYC 7443P 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 Core i5-661 and EPYC 7443P 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 i5-661 and EPYC 7443P. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-3200
Maximum memory size	16.38 GB	4 TiB
Max memory channels	2	no data
Maximum memory bandwidth	21 GB/s	204.795 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	N/A
Clear Video HD	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-661 and EPYC 7443P integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Core i5-661 and EPYC 7443P.

PCIe version	2.0	4.0
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	1.58	36.62
Recency	7 January 2010	12 January 2021
Physical cores	2	24
Threads	4	48
Chip lithography	32 nm	7 nm
Power consumption (TDP)	87 Watt	200 Watt

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Should you still have questions on choice between Core i5-661 and EPYC 7443P, ask them in Comments section, and we shall answer.

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