Ryzen 9 7945HX vs Ryzen 5 7645HX

VS

Aggregate performance score

Ryzen 5 7645HX
2023
6 cores / 12 threads, 45 Watt
16.91
Ryzen 9 7945HX
2023
16 cores / 32 threads, 55 Watt
34.42
+104%

Ryzen 9 7945HX outperforms Ryzen 5 7645HX by a whopping 104% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 5 7645HX and Ryzen 9 7945HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking388111
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Power efficiency35.5659.23
Architecture codenameDragon Range (Zen4) (2023)Dragon Range-HX (Zen 4) (2023−2024)
Release date4 January 2023 (1 year ago)4 January 2023 (1 year ago)

Detailed specifications

Ryzen 5 7645HX and Ryzen 9 7945HX 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 cores6 (Hexa-Core)16 (Hexadeca-Core)
Threads1232
Base clock speed4 GHz2.5 GHz
Boost clock speed5 GHz5.4 GHz
L1 cache64K (per core)64K (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache32 MB (shared)64 MB (shared)
Chip lithography5 nmCCD = 5 nm, I/O = 6 nm
Die size71 mm22x 71 mm2
Maximum core temperature100 °C100 °C
Number of transistors6570 Million13,140 million
64 bit support++
Windows 11 compatibility++
Unlocked multiplier-+

Compatibility

Information on Ryzen 5 7645HX and Ryzen 9 7945HX 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 configuration11
SocketFL1FL1
Power consumption (TDP)45 Watt55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 5 7645HX and Ryzen 9 7945HX. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataMMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI++
FMA-+
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 5 7645HX and Ryzen 9 7945HX are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 5 7645HX and Ryzen 9 7945HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5-5200DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon 610M (400 - 2200 MHz)AMD Radeon 610M (400 - 2200 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 5 7645HX and Ryzen 9 7945HX.

PCIe version5.05.0
PCI Express lanes2828

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.

Ryzen 5 7645HX 16.91
Ryzen 9 7945HX 34.42
+104%

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.

Ryzen 5 7645HX 26868
Ryzen 9 7945HX 54668
+103%

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.

Ryzen 5 7645HX 2656
Ryzen 9 7945HX 2736
+3%

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.

Ryzen 5 7645HX 11577
Ryzen 9 7945HX 15895
+37.3%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Ryzen 5 7645HX 7717
Ryzen 9 7945HX 8462
+9.7%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Ryzen 5 7645HX 44716
Ryzen 9 7945HX 71611
+60.1%

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Ryzen 5 7645HX 26
Ryzen 9 7945HX 62
+140%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Ryzen 5 7645HX 2276
Ryzen 9 7945HX 5521
+143%

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Ryzen 5 7645HX 289
Ryzen 9 7945HX 308
+6.6%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

Ryzen 5 7645HX 12.6
Ryzen 9 7945HX 27.7
+120%

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

Ryzen 5 7645HX 13352
Ryzen 9 7945HX 14532
+8.8%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

Ryzen 5 7645HX 136
Ryzen 9 7945HX 236
+73.3%

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

Ryzen 5 7645HX 328
Ryzen 9 7945HX 369
+12.3%

Geekbench 5.5 Multi-Core

Ryzen 5 7645HX 10145
Ryzen 9 7945HX 19802
+95.2%

Blender(-)

Ryzen 5 7645HX 224
+138%
Ryzen 9 7945HX 94

Geekbench 5.5 Single-Core

Ryzen 5 7645HX 1971
Ryzen 9 7945HX 2124
+7.8%

7-Zip Single

Ryzen 5 7645HX 7124
Ryzen 9 7945HX 7381
+3.6%

7-Zip

Ryzen 5 7645HX 60373
Ryzen 9 7945HX 140471
+133%

WebXPRT 3

Ryzen 5 7645HX 331
Ryzen 9 7945HX 351
+6%

CrossMark Overall

Ryzen 5 7645HX 1939
Ryzen 9 7945HX 2058
+6.1%

WebXPRT 4 Overall

Ryzen 5 7645HX 273
Ryzen 9 7945HX 292
+6.8%

Blender v3.3 Classroom CPU(-)

Ryzen 5 7645HX 360
+142%
Ryzen 9 7945HX 149

Geekbench 6.3 Multi-Core

Ryzen 5 7645HX 11717
Ryzen 9 7945HX 16765
+43.1%

Geekbench 6.3 Single-Core

Ryzen 5 7645HX 2717
Ryzen 9 7945HX 2880
+6%

Gaming performance

Pros & cons summary


Performance score 16.91 34.42
Physical cores 6 16
Threads 12 32
Power consumption (TDP) 45 Watt 55 Watt

Ryzen 5 7645HX has 22.2% lower power consumption.

Ryzen 9 7945HX, on the other hand, has a 103.5% higher aggregate performance score, and 166.7% more physical cores and 166.7% more threads.

The Ryzen 9 7945HX is our recommended choice as it beats the Ryzen 5 7645HX in performance tests.


Should you still have questions on choice between Ryzen 5 7645HX and Ryzen 9 7945HX, ask them in Comments section, and we shall answer.

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AMD Ryzen 5 7645HX
Ryzen 5 7645HX
AMD Ryzen 9 7945HX
Ryzen 9 7945HX

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