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MagyarAMD Ryzen 9 7845HX vs AMD Ryzen 5 7645HX
AMD Ryzen 9 7845HX
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The AMD Ryzen 9 7845HX is a fast high-end laptop processor of the Dragon Range series. It offers 12 of the 16 cores based on the Zen 4 architecture that supports hyperthreading (24 threads). The cores clock from 3 (base) up to 5.2 GHz (single core boost). The 7845HX is the second-fastest mobile Ryzen CPU at launch and derived from the desktop Ryzen 9 7900X.
The performance of the R9 7845HX is significantly faster than the old top model Ryzen 9 6980HX (8 Zen 3 cores, 5 GHz max) thanks to the higher core count, improved architecture and higher clock speed.
The Dragon Range series still uses a chiplet design with two CCD-clusters (each with 8 possible cores) in 5nm and an IO-die (including the memory controller and the Radeon 610M iGPU) in 6nm. The chip integrates 4x USB 3.2 Gen2 (10 Gbps) ports (no USB4), 28 PCIe 5.0 lanes (for GPU and SSDs) and a dual-channel DDR5-5200 memory controller.
The R9 7845HX is rated at a TDP of 55 Watt and can be configured from 45 to 75 Watt (cTDP).
AMD Ryzen 5 7645HX
► remove from comparisonThe AMD Ryzen 5 7645HX is a fast high-end laptop processor of the Dragon Range series. It offers 6 cores based on the Zen 4 architecture that supports hyperthreading (12 threads). The cores clock from 4 (base) up to 5 GHz (single core boost).
The performance of the R5 7645HX should be significantly higher than the fastest 6-core CPU of the Ryzen 6000 mobile series the Ryzen 5 6600H. Especially single threaded performance should be very good thanks to the new Zen 4 cores and relatively high clock speeds. This means even the old Ryzen 9 6980HX (also 5 GHz, but Zen 3) should be slightly slower in single threaded workloads.
The Dragon Range series still uses a chiplet design with two CCD-clusters (each with 8 possible cores, the 7645HX only uses one CCD with 6 of the 8 cores) in 5nm and an IO-die (including the memory controller and the Radeon 610M iGPU) in 6nm. The chip integrates 4x USB 3.2 Gen2 (10 Gbps) ports (no USB4), 28 PCIe 5.0 lanes (for GPU and SSDs) and a dual-channel DDR5-5200 memory controller.
The R5 7645HX is rated at a TDP of 55 Watt and can be configured up to 75 Watt (cTDP).
| Model | AMD Ryzen 9 7845HX | AMD Ryzen 5 7645HX |
| Series | AMD Dragon Range (Zen 4, Ryzen 7045) | AMD Dragon Range (Zen 4, Ryzen 7045) |
| Codename | Dragon Range-HX (Zen 4) | Dragon Range (Zen4) |
| Clock | 3000 - 5200 MHz | 4000 - 5000 MHz |
| L1 Cache | 768 KB | 384 KB |
| L2 Cache | 12 MB | 6 MB |
| L3 Cache | 64 MB | 32 MB |
| Cores / Threads | 12 / 24 | 6 / 12 |
| TDP | 55 Watt | 55 Watt |
| Transistors | 9900 Million | 9900000 Million |
| Technology | CCD = 5 nm, I/O = 6 nm | 5 nm |
| max. Temp. | 100 °C | 100 °C |
| Socket | FL1 | |
| iGPU | AMD Radeon 610M (400 - 2200 MHz) | AMD Radeon 610M (400 - 2200 MHz) |
| Architecture | x86 | x86 |
| Announced | ||
| Manufacturer | AMD Dragon Range (Zen 4, Ryzen 7045) R9 7845HX | AMD Dragon Range (Zen 4, Ryzen 7045) R5 7645HX |
Benchmarks
- Average benchmark values for this graphics card* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation