Dell XPS 16 9640 vs ThinkPad P14s Gen 6: Discrete RTX or Long Battery Life for a Workstation?

The Dell XPS 16 9640 and Lenovo ThinkPad P14s Gen 6 both sit in the 35-45 million VND range, with new-generation AI chips and sharp displays, but they take opposite approaches. Something few people notice: the XPS 16 weighs between 700g and more than 1kg more than the P14s, and most of that weight comes from a discrete RTX GPU with a 50-60W TGP that the P14s doesn't have. Instead, the P14s Gen 6 pairs a Radeon 860M iGPU with a 50 TOPS NPU in a chassis of just 1.39kg. This comparison, based on 2026 spec sheets and real-world benchmarks, will help you pick the right machine.

Specs and key differences

The Dell XPS 16 9640 is Dell's thin-and-light flagship from the 2024 lineup. It uses an Intel Meteor Lake Core Ultra 7 155H with GPU options ranging from the Intel Arc iGPU to the RTX 4050/4060/4070, and its 16.3-inch display suits people who mostly work at a desk and need a discrete GPU for rendering or video. The ThinkPad P14s Gen 6 is a 14-inch mobile workstation for 2026, built on the AMD Ryzen AI 7 PRO 350 (Zen 5) with an integrated 50 TOPS NPU. It targets engineers and businesses that need a compact body, a full set of ports, and enterprise warranty coverage.

Three differences really matter. First, the GPU: the base XPS 16 has only the Intel Arc iGPU, and getting an RTX 4050/4060/4070 means stepping up to a model starting at 38 million. Buying an XPS 16 without an RTX throws away the main reason to choose it. Second, RAM: the P14s Gen 6 comes with 32GB of RAM and a 1TB SSD even in the base configuration, while the XPS 16 starts at 16GB/512GB with RAM soldered to the board and impossible to upgrade. Third, ports: the XPS 16 has only USB-C, so you have to carry a hub when working in the field. The P14s has USB-A, HDMI 2.1, RJ45, and an optional nano-SIM right out of the box.

Performance, battery life, and real-world experience

The Core Ultra 7 155H in the XPS 16 has 16 cores (6P+8E+2 LP-E) with a real-world TDP of around 45-50W, and it is strong in heavy multithreaded work: large compiles, video encoding, and running several VMs in parallel. The P14s's Ryzen AI 7 PRO 350 has only 8 cores, but the Zen 5 architecture brings a clear IPC improvement, with a 5.0GHz boost and a real-world TDP of 28-35W. Its single-core performance is more competitive against Meteor Lake than you might expect.

On the GPU side, the RTX 4050 with a 50-60W TGP in the higher-end XPS 16 runs Valorant/CS2 very smoothly at 1080p, handles GTA V steadily, and manages Cyberpunk 2077 at Low settings or with DLSS. The Radeon 860M in the P14s is enough for Valorant/LoL at 1080p and can run GTA V lightly, while Cyberpunk is limited to Low/FSR with clearly lower frame rates. For Blender rendering or DaVinci Resolve exports, the discrete RTX wins clearly thanks to its CUDA cores and dedicated VRAM, a gap that no iGPU can close.

The XPS 16's 16.3-inch IPS display is large and comfortable for multi-window work, and 100% sRGB at 500 nits is enough for basic color work. The 3840x2400 OLED touch option is a very different experience in color, but it raises the price and shortens battery life. The P14s has a smaller 14-inch display but a higher pixel density, so it looks sharp at normal working distances. The ThinkPad keyboard keeps its reputation: deep travel, clear feedback, and the iconic red TrackPoint, well suited to people who type for hours at a stretch. The XPS 16 keyboard is good, but the travel is shorter and there is no TrackPoint.

Battery life deserves an honest look: the XPS 16 has a 99.5Wh battery, the largest in its class, but the RTX model realistically lasts only 4-7 hours because the discrete GPU draws power continuously even when you aren't rendering. The iGPU model reaches 7-10 hours. The P14s has just a 52.5Wh battery, nearly half the size, but the Ryzen AI 7 PRO 350 with its 28-35W TDP gets 7-11 hours of office use, according to NotebookCheck data and Lenovo's 2026 PSREF. That matches or beats the iGPU XPS 16 on a much smaller battery. On thermals: the P14s, with its small body and low TDP, runs cooler under average workloads. The RTX XPS 16 needs its fans to work harder, and the bottom gets hotter during long renders.

Which one should you choose?

Choose the XPS 16 9640 RTX model if your work regularly involves 3D rendering, 4K video export, Blender, DaVinci Resolve, Stable Diffusion, or if you want light gaming after hours. An RTX 4050/4060 with a 50-60W TGP makes a clear difference when exporting heavy files, a task a pure iGPU can't handle reliably. The 16.3-inch display also suits you if you often work on large layouts or read documents across many tabs side by side. One caveat: the RAM is soldered and can't be upgraded, so go for the 32GB model from the start. A sensible budget is 38-42 million for the RTX + 32GB model, and skip the 16GB/iGPU version because it doesn't make use of what the machine does best.

Choose the ThinkPad P14s Gen 6 if mobility is the deciding factor: at 1.39kg it is nearly 800g lighter than the lightest XPS 16, and 7-11 hours of office battery life makes it a practical pairing. For engineers doing programming, data analysis, 2D CAD, GIS, or system administration, the Radeon 860M and 50 TOPS NPU are enough for daily workflows and draw clearly less power. A full set of ports out of the box (USB-A, HDMI 2.1, RJ45, nano-SIM) is an advantage in meetings or fieldwork without a hub. The base 32GB/1TB configuration is already well balanced. See also Top 4 office laptops under 40 million for more options.

Neither is a good fit if your budget is truly under 30 million, since at that level there are many machines with a better balance of performance and price. If you need a GPU stronger than the RTX 4060 for professional rendering or heavy AI training, look at dedicated workstation lines with a higher TGP. And if your work revolves around office tasks and online meetings, both are more than capable, and you would be paying for hardware you never use.

Frequently asked questions (FAQ)

Is the discrete RTX in the XPS 16 really faster than the P14s's Radeon 860M in real work?

For 3D rendering and video export: the RTX 4050 with a 50-60W TGP is clearly faster, especially in CUDA tasks such as Blender Cycles or DaVinci Resolve GPU acceleration. For programming, 2D CAD, data analysis, or light AI inference: the Radeon 860M paired with the 50 TOPS NPU is good enough and uses much less power. If your workflow has no heavy GPU tasks, the real-world gap is much smaller than pure benchmarks suggest.

Which one lasts longer on battery and runs cooler in real use?

The P14s Gen 6 lasts longer on light tasks: the Ryzen AI 7 PRO 350 with its 28-35W TDP gets 7-11 hours despite a battery of only 52.5Wh. The RTX XPS 16 manages just 4-7 hours because the discrete GPU draws power continuously even when you aren't rendering. On thermals: the P14s runs cooler under office workloads. The RTX XPS 16 has its fans running more and a hotter bottom during sustained tasks.

How big is the price gap, and is it worth stepping up to a higher model?

Both start at around 35 million. The base XPS 16 has only the Arc iGPU and doesn't play to its strengths, so you need 38-42 million for the RTX + 32GB RAM model. The P14s with 32GB/1TB/Radeon 860M is already well balanced from the start, with no need to spend more. Moving up to the Radeon 890M or 64GB of RAM makes sense if you run many VMs or need a stronger iGPU.

Which machine should engineers choose?

It depends on your main software. If you use Blender, SolidWorks with GPU, Lumion, or need CUDA regularly, the RTX XPS 16 is the better fit. If you use AutoCAD 2D, light Revit, programming, or data science, or travel often, the P14s is lighter, has better battery life, and has a fuller set of ports. At Hung Phat Laptop in Ho Chi Minh City, you can try both in person before deciding.

ABOUT THE AUTHOR

Mina

Technology Editor

Mina is Hung Phat Laptop's AI editorial assistant, helping compile and write reviews, tech news and tips about laptops, PCs and mobile devices. Content is built from official manufacturer specs, reputable sources and real customer feedback, and is reviewed by the Hung Phat technical team before publishing to make sure it is accurate, objective and useful.

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