AMD Ryzen 7 8840HX
The AMD Ryzen 7 8840HX is a higher-end 12-core Dragon Range refresh lineup processor that debuted in April 2025 and is primarily targeted at gaming laptops. The product offers 12 SMT-enabled Zen 4 cores (24 threads) running at 2.9 GHz to 5.1 GHz, along with a rather basic Radeon 610M RDNA 2 architecture iGPU. This Ryzen 7 8000 APU is essentially a Ryzen 9 7845HX with the base clock speed and Turbo clock speed cut by 100 MHz each.
The 8840HX is composed of three dies made on two different nodes (5 nm for CPU cores; 6 nm for other componentry). It features a very healthy 28 PCIe 5 lanes for connecting graphics cards and SSDs as fast as 15.75 GB/s. The RAM controller is limited to DDR5-5200 or slower; there is no NPU and no Thunderbolt support, the product page on amd.com indicates, but the clock multiplier is unlocked for easy overclocking.
Performance
While we have not tested a single system featuring the 8840HX as of April 2025, we can take the 7845HX's multi-thread Cinebench scores and lower them by a percent or two. If we do that, the 8840HX emerges as a Core i7-14650HX and Core i7-14700HX-beating CPU which is fast enough for any 2025 or 2026 game.
Power consumption
Much like the 7845HX, the 8840HX has a base TDP (long-term power limit) of 55 watts that can officially be jacked up to as high as 75 watts. In fact, Alienware allows the 7845HX to consume well over 100 watts in its 2023 Alienware m16 (the only 7845HX system Notebookcheck has tested). Either way, to dissipate 50+ watts, at least one high-RPM fan is needed.
| Codename | Dragon Range refresh (Zen 4) | ||||||||||||||||
| Series | AMD Dragon Range (Zen 4, Ryzen 7X4X/8X4X) | ||||||||||||||||
Series: Dragon Range (Zen 4, Ryzen 7X4X/8X4X) Dragon Range refresh (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 | ||||||||||||||||
| Manufacturing Technology | CCD = 5nm, I/O = 6 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 ( - 2200 MHz) | ||||||||||||||||
| 64 Bit | 64 Bit support | ||||||||||||||||
| Architecture | x86 | ||||||||||||||||
| Announcement Date | 04/10/2025 | ||||||||||||||||
| Product Link (external) | www.amd.com | ||||||||||||||||
Benchmarks
- Average benchmark values* Smaller numbers mean a higher performance
No reviews found for this CPU (yet).
