There is no controlled, chip-only test here that proves one processor is faster overall. Available benchmark results compare phones: the Redmi Note 15 Pro 5G with Dimensity 7400-Ultra and the Nothing Phone (3a) Pro with Snapdragon 7s Gen 3. The Nothing scored higher in the cited tests, but differences in memory, storage, cooling, software and other handset design choices mean those results cannot isolate the chips.
What the official specifications establish
Qualcomm describes Snapdragon 7s Gen 3 as a 4 nm mobile platform with a Kryo CPU, Adreno GPU, on-device generative AI support, camera processing, and 5G and Wi-Fi capabilities. Its CPU reaches speeds up to 2.5 GHz, according to Qualcomm’s product specifications. A peak clock speed is not a direct measure of how fast a phone will run: sustained performance also depends on the handset’s cooling and power settings.
MediaTek’s official page describes the Dimensity 7400, including Adaptive Gaming Technology 3.0, an NPU 655 and 5G UltraSave features. Xiaomi’s UAE product page names the processor in its Redmi Note 15 Pro 5G as “MediaTek Dimensity 7400-Ultra.” The base 7400 page does not fully establish how the Ultra implementation differs, so its details should not be treated as a complete specification sheet for the Ultra variant.
Qualcomm’s performance claims are predecessor-relative
In its August 20, 2024 launch announcement, Qualcomm claimed nearly 20% improved CPU performance, up to 40% accelerated GPU performance, over 30% better AI performance and 12% overall power savings versus the preceding generation. These are Qualcomm’s claims about generational improvement, not measurements against Dimensity 7400 Ultra. See the Snapdragon 7s Gen 3 launch announcement.
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- Dual-SIM, Network Compatibility, SIM CARD 1 & 2 : [2G : GSM 850 / 900 / 1800 / 1900 and/or 3G : HSDPA 850(B5) / 900(B8) / 2100(B1) and/or 4G : FDD-LTE 700(B28) / 850(B5) / 900(B8) / 1800(B3) / 2100(B1) : TDD-LTE 2300(B40) / 2500(B41) and/or and/or 5G : N1 / N3 / N5 / N8 / N28 / N40 / N41 / N77 / N78]
- 6.7 inches, AMOLED, 1B colors, 1080 x 2412 pixels
- 256GB ROM Storage, 8GB RAM
- Android 14, Realme UI 5.0, Qualcomm SM7435-AB Snapdragon 7s Gen 2 (4 nm), Octa-core (4x2.40 GHz Cortex-A78 & 4x1.95 GHz Cortex-A55), Adreno 710
- Rear: 50MP+64MP+8MP, Front: 32MP
How the reviewed phones scored
01net reports the following results for two different handsets. The figures are device-level results, not a controlled comparison of the processors alone.
| Benchmark | Redmi Note 15 Pro 5G (Dimensity 7400-Ultra) |
Nothing Phone (3a) Pro (Snapdragon 7s Gen 3) |
|---|---|---|
| AnTuTu 10 | 690,472 | 821,167 |
| Geekbench 6 single-core | 1,060 | 1,180 |
| Geekbench 6 multi-core | 2,966 | 3,293 |
| Geekbench 6 GPU column | 3,034 | 3,320 |
In this particular set of results, the Nothing Phone (3a) Pro scores higher in each listed row. The figures come from 01net’s Redmi Note 15 Pro 5G review, which presents the phones in the same comparison table. The review also calls out LPDDR4X memory and UFS 2.2 storage in its discussion of the Redmi’s performance. Those and other handset differences can affect benchmark results and everyday responsiveness, so the score gap should not be assigned wholly to the Snapdragon processor.
Rank #2
- For USA Buyers: This Smartphone is not compatible/will not work with any CDMA Networks including: VERIZON, SPRINT, US CELLULAR. Please check with your network provider for 3G or 4G/LTE compatibility check before you purchase.
- Dual-SIM, Network Compatibility, SIM CARD 1 & 2 : [2G : GSM 850 / 900 / 1800 / 1900 : CDMA 800and/or 3G : HSDPA 850(B5) / 900(B8) / 2100(B1) and/or 4G : FDD-LTE 700(B28) / 850(B5) / 900(B8) / 1800(B3) / 2100(B1) TDD-LTE 2300(B40) / 2500(B41) and/or 5G : NR N1/N3/N5/N8/N28/N40/N41/N77/N78 SA/NSA]
- 6.7 inches, AMOLED, 1B colors, 1080 x 2412 pixels
- 512GB Storage, 12GB RAM
- Android 14, Qualcomm SM7435-AB Snapdragon 7s Gen 2 (4 nm), Octa-core (4x2.40 GHz Cortex-A78 & 4x1.95 GHz Cortex-A55)
Why these results do not identify a chip-only winner
A processor benchmark run on a phone measures the phone’s implementation of that processor. Cooling, firmware, power limits, RAM, storage and the test conditions can all influence the outcome. The available review does not establish a matched test with the same phone design, firmware, cooling, memory and setup for both chips. Therefore, the table supports a comparison of these two reviewed phones under 01net’s tests, not a universal ranking of Snapdragon 7s Gen 3 against Dimensity 7400 Ultra.
UL Solutions’ phone listing provides additional product context, but not a direct resolution: its listing includes the Redmi Note 15 Pro (China) with Dimensity 7400 and the Redmi Note 14 Pro+ 5G (Global) with Snapdragon 7s Gen 3. It names the base 7400 rather than the Ultra and compares different devices. See the UL Solutions Steel Nomad Light phone listing.
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- For USA Buyers: Only work with T-Mobile in the US, as it is not optimized for Verizon and AT&T. This means that as long as there's T-Mobile coverage, it'll work. For Intentional Buyers: Work outside of the USA with any network provider without any restrictions.
- 6.31" inch, Full HD LTPO P-OLED, 1116x2484 resolution, 431ppi, Corning Gorilla Glass 7i, 10-120 Hz refresh rate, 240 Hz touch screen sample rate
- 256GB UFS3.1 storage, microSD up to 2TB external storage capacity
- 12GB LPDDR5 RAM
- Snapdragon 7s (Gen 4) Mobile Platform Processor, Adreno GPU
How to compare phones using these processors
If you are choosing between particular phones, compare their complete results and specifications rather than relying on the processor name alone.
Quick Recap
Rank #4
- For USA Buyers: Only work with T-Mobile in the US, as it is not optimized for Verizon and AT&T. This means that as long as there's T-Mobile coverage, it'll work. For Intentional Buyers: Work outside of the USA with any network provider without any restrictions.
- 6.31" inch, Full HD LTPO P-OLED, 1116x2484 resolution, 431ppi, Corning Gorilla Glass 7i, 10-120 Hz refresh rate, 240 Hz touch screen sample rate
- 256GB UFS3.1 storage, microSD up to 2TB external storage capacity
- 12GB LPDDR5 RAM
- Snapdragon 7s (Gen 4) Mobile Platform Processor, Adreno GPU
- CPU: Compare single-core and multi-core scores from the same Geekbench version; these describe different workloads.
- Graphics and games: Look for GPU tests and sustained gameplay results, including temperature and performance over time. A short benchmark run does not show whether performance holds under longer use.
- Battery and connectivity: Consider battery life and modem or network support in the specific handset. Platform features do not guarantee identical results across phone models.
- Whole-phone factors: Check RAM type and capacity, storage, display, battery, cameras, software support and price. These can matter as much as the processor for the experience and value.
- Benchmark comparability: Match the test name and version, and identify the exact phone model. Avoid mixing AnTuTu versions or treating crowdsourced averages as guaranteed results for a handset.
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