Ryzen 5 7645HX vs EPYC 7742

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Aggregate performance score

EPYC 7742
2019
64 cores / 128 threads, 225 Watt
45.52
+159%

EPYC 7742 outperforms Ryzen 5 7645HX by a whopping 159% based on our aggregate benchmark results.

Primary details

Comparing EPYC 7742 and Ryzen 5 7645HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking45377
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation3.47no data
Market segmentServerLaptop
SeriesAMD EPYCno data
Power efficiency18.4535.58
Architecture codenameZen 2 (2017−2020)Dragon Range (Zen4) (2023)
Release date7 August 2019 (5 years ago)4 January 2023 (1 year ago)
Launch price (MSRP)$6,950no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

EPYC 7742 and Ryzen 5 7645HX 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 cores64 (Tetrahexaconta-Core)6 (Hexa-Core)
Threads12812
Base clock speed2.25 GHz4 GHz
Boost clock speed3.4 GHz5 GHz
Multiplier22.5no data
L1 cache96K (per core)64K (per core)
L2 cache512K (per core)1 MB (per core)
L3 cache256 MB (shared)32 MB (shared)
Chip lithography7 nm, 14 nm5 nm
Die size192 mm271 mm2
Maximum core temperatureno data100 °C
Number of transistors4,800 million6570 Million
64 bit support++
Windows 11 compatibility++
Unlocked multiplier+-

Compatibility

Information on EPYC 7742 and Ryzen 5 7645HX 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 configuration2 (Multiprocessor)1
SocketTR4FL1
Power consumption (TDP)225 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7742 and Ryzen 5 7645HX. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7742 and Ryzen 5 7645HX are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and Ryzen 5 7645HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Eight-channelDDR5-5200
Maximum memory size4 TiBno data
Max memory channels8no data
Maximum memory bandwidth204.763 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon 610M

Peripherals

Specifications and connection of peripherals supported by EPYC 7742 and Ryzen 5 7645HX.

PCIe versionno data5.0
PCI Express lanesno data28

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 45.52
+159%
Ryzen 5 7645HX 17.56

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
+159%
Ryzen 5 7645HX 26868

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

EPYC 7742 1204
Ryzen 5 7645HX 2667
+122%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

EPYC 7742 11782
+0.9%
Ryzen 5 7645HX 11678

Gaming performance

Pros & cons summary


Performance score 45.52 17.56
Recency 7 August 2019 4 January 2023
Physical cores 64 6
Threads 128 12
Chip lithography 7 nm 5 nm
Power consumption (TDP) 225 Watt 45 Watt

EPYC 7742 has a 159.2% higher aggregate performance score, and 966.7% more physical cores and 966.7% more threads.

Ryzen 5 7645HX, on the other hand, has an age advantage of 3 years, a 40% more advanced lithography process, and 400% lower power consumption.

The EPYC 7742 is our recommended choice as it beats the Ryzen 5 7645HX in performance tests.

Be aware that EPYC 7742 is a server/workstation processor while Ryzen 5 7645HX is a notebook one.


Should you still have questions on choice between EPYC 7742 and Ryzen 5 7645HX, ask them in Comments section, and we shall answer.

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AMD EPYC 7742
EPYC 7742
AMD Ryzen 5 7645HX
Ryzen 5 7645HX

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4.3 128 votes

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3.4 48 votes

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Questions & comments

Here you can ask a question about EPYC 7742 or Ryzen 5 7645HX, agree or disagree with our judgements, or report an error or mismatch.