EPYC 7443 vs EPYC 7742

Place in the ranking	46	104
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.35	15.27
Market segment	Server	Server
Series	AMD EPYC	AMD EPYC
Power efficiency	18.45	16.86
Architecture codename	Zen 2 (2017−2020)	Milan (2021−2023)
Release date	7 August 2019 (5 years ago)	15 March 2021 (3 years ago)
Launch price (MSRP)	$6,950	$2,010

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7443 has 356% better value for money than EPYC 7742.

Detailed specifications

EPYC 7742 and EPYC 7443 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	64 (Tetrahexaconta-Core)	24 (Tetracosa-Core)
Threads	128	48
Base clock speed	2.25 GHz	2.85 GHz
Boost clock speed	3.4 GHz	4 GHz
Multiplier	22.5	28.5
L1 cache	96K (per core)	64 KB (per core)
L2 cache	512K (per core)	512 KB (per core)
L3 cache	256 MB (shared)	128 MB (shared)
Chip lithography	7 nm, 14 nm	7 nm+
Die size	192 mm²	4x 81 mm²
Number of transistors	4,800 million	16,600 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7742 and EPYC 7443 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	2 (Multiprocessor)	2
Socket	TR4	SP3
Power consumption (TDP)	225 Watt	200 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7742 and EPYC 7443. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
Precision Boost 2	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7742 and EPYC 7443 are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and EPYC 7443. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR4-3200
Maximum memory size	4 TiB	4 TiB
Max memory channels	8	no data
Maximum memory bandwidth	204.763 GB/s	204.795 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by EPYC 7742 and EPYC 7443.

PCIe version	no data	4.0
PCI Express lanes	no data	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.

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.

EPYC 7742 43.86
+23.1%

EPYC 7443 35.63

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

EPYC 7742 69663
+23.1%

EPYC 7443 56601