Ryzen 5 8645HS vs Ryzen 9 7945HX

VS

Aggregate performance score

Ryzen 9 7945HX
2023
16 cores / 32 threads, 55 Watt
34.42
+138%
Ryzen 5 8645HS
2023
6 cores / 12 threads, 45 Watt
14.47

Ryzen 9 7945HX outperforms Ryzen 5 8645HS by a whopping 138% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 7945HX and Ryzen 5 8645HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking111499
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Power efficiency59.2330.43
Architecture codenameDragon Range-HX (Zen 4) (2023−2024)Hawk Point-HS (Zen 4) (2023−2024)
Release date4 January 2023 (1 year ago)6 December 2023 (1 year ago)

Detailed specifications

Ryzen 9 7945HX and Ryzen 5 8645HS 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 cores16 (Hexadeca-Core)6 (Hexa-Core)
Threads3212
Base clock speed2.5 GHz4.3 GHz
Boost clock speed5.4 GHz5 GHz
L1 cache64K (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache64 MB (shared)16 MB (shared)
Chip lithographyCCD = 5 nm, I/O = 6 nm4 nm
Die size2x 71 mm2178 mm2
Maximum core temperature100 °C100 °C
Number of transistors13,140 million25,000 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 7945HX and Ryzen 5 8645HS 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
SocketFL1FP8
Power consumption (TDP)55 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7945HX and Ryzen 5 8645HS. You'll probably need this information if you require some particular technology.

Instruction set extensionsMMX, 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, SMERyzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
AES-NI++
FMA+-
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 7945HX and Ryzen 5 8645HS are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7945HX and Ryzen 5 8645HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon 610M (400 - 2200 MHz)AMD Radeon 760M ( - 2600 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7945HX and Ryzen 5 8645HS.

PCIe version5.04.0
PCI Express lanes2820

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 9 7945HX 34.42
+138%
Ryzen 5 8645HS 14.47

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 9 7945HX 54668
+138%
Ryzen 5 8645HS 22985

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Ryzen 9 7945HX 19820
+41%
Ryzen 5 8645HS 14055

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Ryzen 9 7945HX 1.99
+65.3%
Ryzen 5 8645HS 3.29

Cinebench 15 64-bit multi-core

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

Ryzen 9 7945HX 5521
+164%
Ryzen 5 8645HS 2094

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 9 7945HX 308
+14.1%
Ryzen 5 8645HS 270

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 9 7945HX 27.7
+152%
Ryzen 5 8645HS 11

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 9 7945HX 14532
+117%
Ryzen 5 8645HS 6695

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 9 7945HX 236
+93.3%
Ryzen 5 8645HS 122

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 9 7945HX 369
+31%
Ryzen 5 8645HS 282

Geekbench 5.5 Multi-Core

Ryzen 9 7945HX 19802
+110%
Ryzen 5 8645HS 9420

Blender(-)

Ryzen 9 7945HX 94
Ryzen 5 8645HS 241
+156%

Geekbench 5.5 Single-Core

Ryzen 9 7945HX 2124
+10.9%
Ryzen 5 8645HS 1915

7-Zip Single

Ryzen 9 7945HX 7381
+19.2%
Ryzen 5 8645HS 6190

7-Zip

Ryzen 9 7945HX 140471
+153%
Ryzen 5 8645HS 55608

WebXPRT 3

Ryzen 9 7945HX 351
+19%
Ryzen 5 8645HS 295

CrossMark Overall

Ryzen 9 7945HX 2058
+16.6%
Ryzen 5 8645HS 1765

WebXPRT 4 Overall

Ryzen 9 7945HX 292
+17.5%
Ryzen 5 8645HS 248

Blender v3.3 Classroom CPU(-)

Ryzen 9 7945HX 149
Ryzen 5 8645HS 389
+161%

Geekbench 6.3 Multi-Core

Ryzen 9 7945HX 16765
+54.1%
Ryzen 5 8645HS 10882

Geekbench 6.3 Single-Core

Ryzen 9 7945HX 2880
+12.1%
Ryzen 5 8645HS 2570

Gaming performance

Pros & cons summary


Performance score 34.42 14.47
Integrated graphics card 2.85 14.90
Recency 4 January 2023 6 December 2023
Physical cores 16 6
Threads 32 12
Power consumption (TDP) 55 Watt 45 Watt

Ryzen 9 7945HX has a 137.9% higher aggregate performance score, and 166.7% more physical cores and 166.7% more threads.

Ryzen 5 8645HS, on the other hand, has 422.8% faster integrated GPU, an age advantage of 11 months, and 22.2% lower power consumption.

The Ryzen 9 7945HX is our recommended choice as it beats the Ryzen 5 8645HS in performance tests.


Should you still have questions on choice between Ryzen 9 7945HX and Ryzen 5 8645HS, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


AMD Ryzen 9 7945HX
Ryzen 9 7945HX
AMD Ryzen 5 8645HS
Ryzen 5 8645HS

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

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


4.6 667 votes

Rate Ryzen 9 7945HX on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.1 171 vote

Rate Ryzen 5 8645HS on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Ryzen 9 7945HX or Ryzen 5 8645HS, agree or disagree with our judgements, or report an error or mismatch.