Ryzen 5 8645HS vs Ryzen 5 7645HX

Place in the ranking	379	499
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Power efficiency	35.56	30.22
Architecture codename	Dragon Range (Zen4) (2023)	Hawk Point-HS (Zen 4) (2023−2024)
Release date	4 January 2023 (1 year ago)	6 December 2023 (less than a year ago)

Detailed specifications

Ryzen 5 7645HX 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 cores	6 (Hexa-Core)	6 (Hexa-Core)
Threads	12	12
Base clock speed	4 GHz	4.3 GHz
Boost clock speed	5 GHz	5 GHz
L1 cache	64K (per core)	64 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	32 MB (shared)	16 MB (shared)
Chip lithography	5 nm	4 nm
Die size	71 mm²	178 mm²
Maximum core temperature	100 °C	100 °C
Number of transistors	6570 Million	25,000 million
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Ryzen 5 7645HX 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 configuration	1	1
Socket	FL1	FP8
Power consumption (TDP)	45 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 5 7645HX and Ryzen 5 8645HS. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
AES-NI	+	+
AVX	+	+
Precision Boost 2	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 5 7645HX and Ryzen 5 8645HS are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 5 7645HX and Ryzen 5 8645HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR5-5200

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare

AMD Radeon 610M

AMD Radeon 760M

Peripherals

Specifications and connection of peripherals supported by Ryzen 5 7645HX and Ryzen 5 8645HS.

PCIe version	5.0	4.0
PCI Express lanes	28	20

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
+17.7%

Ryzen 5 8645HS 14.37

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
+17.7%

Ryzen 5 8645HS 22823

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
+8.7%

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 5 7645HX 289
+7%

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 5 7645HX 12.6
+14.5%

Ryzen 5 8645HS 11

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
+11.6%

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 5 7645HX 328
+16.7%

Ryzen 5 8645HS 282

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
+99.4%

Ryzen 5 8645HS 6695