AMD Ryzen 9 7840HX
The AMD Ryzen 9 7840HX is a high-end notebook processor from the Dragon Range series with 12 cores and hyperthreading (SMT), which means it can process up to 24 threads simultaneously. The CPU uses the current Zen 4 architecture for the 12 cores and clocks these from 2.9 GHz (base clock) up to 5.1 GHz (single-core boost). The CPU offers 12 MB L2 cache and 64 MB L3 cache (i.e. a total of 76 MB cache). The 7840X consists of three chiplets, two CCD clusters with a maximum of 8 CPU cores on 5nm (71mm²) and one IO die on 6nm (122mm²) which are all manufactured by TSMC.
The performance of the Ryzen 9 should be significantly faster than the old Ryzen 9 6980HX (top model Rembrandt H, 8 cores, max 5 GHz). This is achieved by the additional cores, higher clock rate and improved architecture. Compared to the one year older Ryzen 9 7845HX, the 7840HX is clocked 100 MHz lower.
The chip also integrates 4x USB 3.2 Gen2 (10 Gbps) ports (no USB 4), 28 PCIe 5.0 lanes (for GPUs and SSDs), a dual-channel DDR5-5200 memory controller and a small AMD Radeon 610M graphics card (2CUs, 400 - 2200 MHz).
The R9 7840HX is specified with 55 watts TDP and can be configured from 45 to 75 watts (cTDP).
| Codename | Dragon Range-HX (Zen 4) | ||||||||||||||||||||
| Series | AMD Dragon Range | ||||||||||||||||||||
Series: Dragon Range Dragon Range-HX (Zen 4)
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| Clock Rate | 2900 - 5100 MHz | ||||||||||||||||||||
| Level 1 Cache | 768 KB | ||||||||||||||||||||
| Level 2 Cache | 12 MB | ||||||||||||||||||||
| Level 3 Cache | 64 MB | ||||||||||||||||||||
| Number of Cores / Threads | 12 / 24 12 x 5.1 GHz AMD Zen 4 | ||||||||||||||||||||
| Power Consumption (TDP = Thermal Design Power) | 55 Watt | ||||||||||||||||||||
| Transistor Count | 9900 Million | ||||||||||||||||||||
| Manufacturing Technology | 5 nm | ||||||||||||||||||||
| Max. Temperature | 100 °C | ||||||||||||||||||||
| Socket | FL1 | ||||||||||||||||||||
| Features | DDR5-5200 RAM, PCIe 5, MMX, 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, SME | ||||||||||||||||||||
| GPU | AMD Radeon 610M (400 - 2200 MHz) | ||||||||||||||||||||
| 64 Bit | 64 Bit support | ||||||||||||||||||||
| Architecture | x86 | ||||||||||||||||||||
| Announcement Date | 01/17/2024 | ||||||||||||||||||||
| Product Link (external) | www.amd.com | ||||||||||||||||||||
Benchmarks
- Average benchmark values* Smaller numbers mean a higher performance
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- msi Crosshair A16 HX 16” QHD+ 240Hz Gaming Laptop – AMD Ryzen 9 8940HX, NVIDIA GeForce RTX 5060, 16GB DDR5, 1TB NVMe SSD, Wi-Fi 6E, USB-C, Windows 11 D8WFKG-090US
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