Intel Core i7-8665UE vs AMD RX-421ND
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CPU comparison with benchmarks
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| Intel Core i7-8665UE | AMD RX-421ND | |
CPU comparisonIntel Core i7-8665UE or AMD RX-421ND - 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 Intel Core i7-8665UE has 4 cores with 8 threads and clocks with a maximum frequency of 4.40 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i7-8665UE was released in Q2/2019. The AMD RX-421ND has 4 cores with 4 threads and clocks with a maximum frequency of 3.40 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD RX-421ND was released in Q4/2015. |
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| Intel Core i7 (298) | Family | AMD R (6) |
| Intel Core i 8000U (WL) (8) | CPU group | AMD RX 1st Gen. (6) |
| 8 | Generation | 1 |
| Whiskey Lake U | Architecture | Merlin Falcon (Excavator) |
| Mobile | Segment | Mobile |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core i7-8665UE has 4 CPU cores and can calculate 8 threads in parallel. The clock frequency of the Intel Core i7-8665UE is 1.70 GHz (4.40 GHz) while the AMD RX-421ND has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the AMD RX-421ND is at 2.10 GHz (3.40 GHz). |
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| Intel Core i7-8665UE | Characteristic | AMD RX-421ND |
| 4 | Cores | 4 |
| 8 | Threads | 4 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| No | Overclocking ? | No |
| 1.70 GHz | Frequency | 2.10 GHz |
| 4.40 GHz | Turbo Frequency (1 Core) | 3.40 GHz |
| -- | Turbo Frequency (All Cores) | -- |
Integrated graphics (iGPU)The Intel Core i7-8665UE or AMD RX-421ND 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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| Intel UHD Graphics 620 | GPU | no iGPU |
| 0.30 GHz | GPU frequency | -- |
| 1.15 GHz | GPU (Turbo) | -- |
| 9.5 | GPU Generation | -- |
| 14 nm | Technology | |
| 3 | Max. displays | |
| 24 | Compute units | -- |
| 192 | Shader | -- |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| 16 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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| Intel UHD Graphics 620 | 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 / Encode | Codec VP9 | No |
| Decode / Encode | Codec VP8 | No |
| No | Codec AV1 | No |
| Decode / Encode | Codec AVC | No |
| Decode | Codec VC-1 | No |
| Decode / Encode | Codec JPEG | No |
Memory & PCIeThe Intel Core i7-8665UE can use up to 64 GB of memory in 2 memory channels. The maximum memory bandwidth is 38.4 GB/s. The AMD RX-421ND supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 38.4 GB/s. |
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| Intel Core i7-8665UE | Characteristic | AMD RX-421ND |
| DDR4-2400 | Memory | DDR4-2400, DDR3-2133 |
| 64 GB | Max. Memory | |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 38.4 GB/s | Max. Bandwidth | 38.4 GB/s |
| No | ECC | Yes |
| -- | L2 Cache | 2.00 MB |
| 8.00 MB | L3 Cache | -- |
| 3.0 | PCIe version | 3.0 |
| 16 | PCIe lanes | 12 |
| 15.8 GB/s | PCIe Bandwidth | 11.8 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the Intel Core i7-8665UE is 15 W, while the AMD RX-421ND has a TDP of 35 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| Intel Core i7-8665UE | Characteristic | AMD RX-421ND |
| 15 W | TDP (PL1 / PBP) | 35 W |
| -- | TDP (PL2) | -- |
| 25 W | TDP up | -- |
| 12.5 W | TDP down | 12 W |
| 100 °C | Tjunction max. | 90 °C |
Technical detailsThe Intel Core i7-8665UE is manufactured in 14 nm and has 8.00 MB cache. The AMD RX-421ND is manufactured in 28 nm and has a 2.00 MB cache. |
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| Intel Core i7-8665UE | Characteristic | AMD RX-421ND |
| 14 nm | Technology | 28 nm |
| Monolithic | Chip design | Unknown |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX2 | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 |
| BGA 1356 | Socket | FP4 |
| VT-x, VT-x EPT, VT-d | Virtualization | AMD-V, AMD-Vt |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | |
| Q2/2019 | Release date | Q4/2015 |
| 409 $ | Release price | -- |
| show more data | show more data | |
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Rate these processors
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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Intel Core i7-8665UE
4C 8T @ 4.40 GHz |
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AMD RX-421ND
4C 4T @ 3.40 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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Intel Core i7-8665UE
4C 8T @ 1.70 GHz |
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AMD RX-421ND
4C 4T @ 2.10 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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Intel Core i7-8665UE
Intel UHD Graphics 620 @ 1.15 GHz |
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AMD RX-421ND
@ 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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Intel Core i7-8665UE
4C 8T @ 1.70 GHz |
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AMD RX-421ND
4C 4T @ 2.10 GHz |
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Devices using this processor |
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| Intel Core i7-8665UE | AMD RX-421ND |
| Unknown | Unknown |
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