AMD Ryzen 5 8645HS vs AMD Phenom II X6 1055T
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CPU comparison with benchmarks
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| AMD Ryzen 5 8645HS | AMD Phenom II X6 1055T | |
CPU comparisonAMD Ryzen 5 8645HS or AMD Phenom II X6 1055T - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The AMD Ryzen 5 8645HS has 6 cores with 12 threads and clocks with a maximum frequency of 5.00 GHz. Up to 256 GB of memory is supported in 2 memory channels. The AMD Ryzen 5 8645HS was released in Q1/2024. The AMD Phenom II X6 1055T has 6 cores with 6 threads and clocks with a maximum frequency of 3.30 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD Phenom II X6 1055T was released in Q3/2010. |
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| AMD Ryzen 5 (86) | Family | AMD Phenom II (52) |
| AMD Ryzen 8040 (20) | CPU group | AMD Phenom II - 1000 (7) |
| 7 | Generation | 6 |
| Hawk Point (Zen 4) | Architecture | Thuban (K10) |
| Mobile | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 5 8645HS has 6 CPU cores and can calculate 12 threads in parallel. The clock frequency of the AMD Ryzen 5 8645HS is 4.30 GHz (5.00 GHz) while the AMD Phenom II X6 1055T has 6 CPU cores and 6 threads can calculate simultaneously. The clock frequency of the AMD Phenom II X6 1055T is at 2.80 GHz (3.30 GHz). |
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| AMD Ryzen 5 8645HS | Characteristic | AMD Phenom II X6 1055T |
| 6 | Cores | 6 |
| 12 | Threads | 6 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| No | Overclocking ? | Yes |
| 4.30 GHz | Frequency | 2.80 GHz |
| 5.00 GHz | Turbo Frequency (1 Core) | 3.30 GHz |
| -- | Turbo Frequency (All Cores) | 3.30 GHz |
NPU AI performanceThe performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. |
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| AMD Ryzen 5 8645HS | Characteristic | AMD Phenom II X6 1055T |
| AMD Ryzen™ AI | AI hardware | -- |
| AMD Ryzen™ AI (XDNA) @ 16 TOPS | AI specifications | -- |
| -- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The AMD Ryzen 5 8645HS or AMD Phenom II X6 1055T has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
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| AMD Radeon 760M | GPU | no iGPU |
| 0.80 GHz | GPU frequency | -- |
| 2.60 GHz | GPU (Turbo) | -- |
| 10 | GPU Generation | -- |
| 4 nm | Technology | |
| 4 | Max. displays | |
| 8 | Compute units | -- |
| 512 | Shader | -- |
| Yes | Hardware Raytracing | No |
| AMD FSR | Frame Generation | No |
| 32 GB | Max. GPU Memory | -- |
| 12 | DirectX Version | -- |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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| AMD Radeon 760M | GPU | no iGPU |
| Decode / Encode | Codec h265 / HEVC (8 bit) | No |
| Decode / Encode | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | No |
| Decode | Codec VP9 | No |
| Decode | Codec VP8 | No |
| Decode / Encode | Codec AV1 | No |
| Decode | Codec AVC | No |
| Decode | Codec VC-1 | No |
| Decode / Encode | Codec JPEG | No |
Memory & PCIeThe AMD Ryzen 5 8645HS can use up to 256 GB of memory in 2 memory channels. The maximum memory bandwidth is 120.0 GB/s. The AMD Phenom II X6 1055T supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s. |
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| AMD Ryzen 5 8645HS | Characteristic | AMD Phenom II X6 1055T |
| DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 | Memory | DDR3-1333, DDR2-1066 |
| 256 GB | Max. Memory | |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 120.0 GB/s | Max. Bandwidth | 21.3 GB/s |
| Yes | ECC | No |
| 6.00 MB | L2 Cache | -- |
| 16.00 MB | L3 Cache | 6.00 MB |
| 4.0 | PCIe version | -- |
| 20 | PCIe lanes | -- |
| 39.4 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Ryzen 5 8645HS is 45 W, while the AMD Phenom II X6 1055T has a TDP of 95 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| AMD Ryzen 5 8645HS | Characteristic | AMD Phenom II X6 1055T |
| 45 W | TDP (PL1 / PBP) | 95 W |
| -- | TDP (PL2) | -- |
| 54 W | TDP up | -- |
| 35 W | TDP down | -- |
| 100 °C | Tjunction max. | -- |
Technical detailsThe AMD Ryzen 5 8645HS is manufactured in 4 nm and has 22.00 MB cache. The AMD Phenom II X6 1055T is manufactured in 45 nm and has a 6.00 MB cache. |
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| AMD Ryzen 5 8645HS | Characteristic | AMD Phenom II X6 1055T |
| 4 nm | Technology | 45 nm |
| Monolithic | Chip design | Unknown |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 | ISA extensions | SSE3, SSE4a |
| FP8 | Socket | AM3 |
| AMD-V, SVM | Virtualization | AMD-V |
| Yes | AES-NI | No |
| Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
| Q1/2024 | Release date | Q3/2010 |
| -- | Release price | -- |
| show more data | show more data | |
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6C 6T @ 2.80 GHz (3.30 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 1 CPU benchmarks
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD Ryzen 5 8645HS
6C 12T @ 5.00 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Cinebench 2024 (Single-Core)
The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
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AMD Ryzen 5 8645HS
6C 12T @ 5.00 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Cinebench 2024 (Multi-Core)
The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
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AMD Ryzen 5 8645HS
6C 12T @ 5.00 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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AMD Ryzen 5 8645HS
6C 12T @ 5.00 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Cinebench R20 (Single-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD Ryzen 5 8645HS
6C 12T @ 5.00 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Cinebench R20 (Multi-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
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AMD Ryzen 5 8645HS
AMD Radeon 760M @ 2.60 GHz |
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AMD Phenom II X6 1055T
@ 0.00 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Blender 2.81 (bmw27)
Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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CPU-Z Benchmark 17 (Multi-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 2.80 GHz |
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Cinebench R15 (Single-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD Ryzen 5 8645HS
6C 12T @ 5.00 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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Cinebench R15 (Multi-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 3.30 GHz |
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AI performance (NPU)
The performance values of the processor's AI unit. The isolated NPU performance is given here, the total AI performance (NPU+CPU+iGPU) can be higher.
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
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AMD Ryzen 5 8645HS
6C 12T @ 4.30 GHz |
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AMD Phenom II X6 1055T
6C 6T @ 2.80 GHz |
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Devices using this processor |
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| AMD Ryzen 5 8645HS | AMD Phenom II X6 1055T |
| Unknown | Unknown |
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