Qualcomm's latest Snapdragon 8s Gen 4 (Apr 2025) goes head‑to‑head with MediaTek’s Dimensity 8400 Ultra (Dec 2024). Both are 4nm chips, but Snapdragon targets flagship-class performance while MediaTek aims high within the upper-midrange segment .

 CPU architecture & clock speeds

Snapdragon: 1× Cortex‑X4 (3.21 GHz) + 7× Cortex‑A720, optimized for peak performance .

Dimensity: eight Cortex‑A725 cores up to 3.25 GHz—more cores, but less powerful per core .

Benchmark breakdown – AnTuTu V10

Snapdragon 8s Gen 4: ~2.05M

Dimensity 8400 Ultra: ~1.59M (≈29% lower)

Snapdragon dominates in CPU, GPU, memory, and UX .

Geekbench 6 result

Single-core: 2,041 vs 1,579 (~29% lead for Snapdragon)

Multi-core: 6,833 vs 6,238 (~10%) .

Snappiness and multitasking: clearly in Snapdragon's favor.

GPU performance

Adreno 825 vs Mali-G720 MP7

Snapdragon scores ~50% higher in GPU benchmarks, thanks to more shading units and FLOPS .

 Memory & bandwidth

Both LPDDR5X & UFS 4.0,

Snapdragon: 4.8 GHz, 76.8 GB/s

Dimensity: 8.533 GHz? likely typo—MediaTek has narrower bandwidth (~68 GB/s) .

Camera & ISP

Snapdragon: Spectra Triple 18‑bit ISP, semantic segmentation, video super‑resolution, etc.

Dimensity: Imagiq 1080 ISP, up to 320MP, but Qualcomm offers richer imaging features .

Connectivity edge

Snapdragon modem: 5G (4.2 Gbps), Wi‑Fi 7, Bluetooth 6.0

Dimensity: 5.17 Gbps, Wi‑Fi 6E, Bluetooth 5.4

Snapdragon edges out with newer standards .

 TL;DR – Snapdragon leads

| Area | Snapdragon 8s Gen 4 | Dimensity 8400 Ultra | |-------------|---------------------|----------------------| | CPU | ✅ +30% in AnTuTu, +29% single-core | Good but behind | | GPU | ✅ +50% boost | Decent | | ISP & AI | ✅ Advanced features | Solid, basic | | Connectivity| ✅ Wi‑Fi 7, BT 6.0 | Less advanced |

When MediaTek still shines

Better thermals and efficiency

Great value (e.g. Poco X7 Pro under ₹30k)

Solid gaming and daily use .

But if you chase raw power in benchmarks, gaming, AI, or high-end imaging—Snapdragon wins.

Real-world picks

Choose Snapdragon 8s Gen 4 if you want flagship-grade performance on mid-tier pricing.

Choose Dimensity 8400 Ultra if you're after value, lower heat, and efficient day-to-day use.

 In summary

Snapdragon is decisively ahead in every core metric: performance, graphics, imaging, and connectivity. MediaTek counters with efficiency and pricing — an impressive runner‑up, but not enough to outpace Qualcomm's latest.

Source :  gizmochina https://www.gizmochina.com/2025/06/16/snapdragon-8s-gen-4-vs 

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