Design:
| Type |
Productivity |
| weight |
1868 g |
| Uses a fanless design |
✕ |
| Has a backlit keyboard |
✓ |
| volume |
1684.236 cm³ |
| width |
356 mm |
| height |
249 mm |
| thickness |
19 mm |
| is weather-sealed (splashproof) |
✕ |
| has a rugged build |
✕ |
The Dell Inspiron 16 5645 (2025) is classified as a productivity laptop with dimensions of 356 mm wide, 249 mm deep, and 19 mm thick, giving it a relatively slim profile for its class. It weighs 1868 g and occupies a total volume of 1684.236 cm³, making it manageable for daily transport despite its 16″ form factor. The machine includes a backlit keyboard for use in low-light environments, though it does not feature a fanless design, a weather-sealed enclosure, or a rugged build.
Display:
| screen size |
16" |
| resolution |
1920 x 1200 px |
| pixel density |
141 ppi |
| has a touch screen |
✓ |
| refresh rate |
60Hz |
| has anti-reflection coating |
✕ |
| supported displays |
4 |
The laptop features a 16″ touchscreen display with a resolution of 1920 x 1200 px and a pixel density of 141 ppi, offering a slightly taller aspect ratio that provides a bit of extra vertical screen space. The panel runs at a 60 Hz refresh rate and does not include an anti-reflection coating. Through its GPU, the system can drive up to 4 displays simultaneously, making it a viable option for users who rely on extended multi-monitor configurations.
Performance:
| RAM |
64GB |
| Uses flash storage |
✓ |
| internal storage |
2048GB |
| CPU speed |
8 x 3.3 GHz |
| CPU threads |
16 threads |
| Is an NVMe SSD |
✓ |
| DirectX version |
DirectX 12 |
| GPU clock speed |
800 MHz |
| uses multithreading |
✓ |
| maximum memory amount |
256GB |
| DDR memory version |
5 |
| turbo clock speed |
5.1GHz |
| GPU turbo |
2700 MHz |
| PCI Express (PCIe) version |
4 |
| semiconductor size |
4 nm |
| has XeSS (XMX) |
✕ |
| Supports 64-bit |
✓ |
The system is powered by an 8-core, 16-thread 64-bit processor built on a 4 nm semiconductor process, running at a base clock of 3.3 GHz with a turbo frequency reaching 5.1 GHz, and it supports multithreading for handling parallel workloads more efficiently. It comes equipped with 64GB of DDR5 RAM, expandable up to 256GB, alongside a 2048GB NVMe SSD connected via PCIe 4, providing fast flash-based storage with ample capacity. The integrated GPU operates at a base clock of 800 MHz and boosts up to 2700 MHz, with support for DirectX 12, though it does not include XeSS acceleration. All components run in a fully 64-bit environment, rounding out a performance configuration suited to demanding productivity tasks.
Benchmarks:
| Geekbench 6 result (multi) |
9332 |
| Geekbench 6 result (single) |
2188 |
| PassMark result |
23339 |
| PassMark result (single) |
3538 |
In standardized benchmark testing, the laptop recorded a Geekbench 6 multi-core score of 9332 and a single-core score of 2188, reflecting the processor's capability across both parallel and sequential workloads. On the PassMark suite, it achieved an overall score of 23339 alongside a single-thread PassMark result of 3538, providing a broader picture of sustained and per-core computational throughput.
Connectivity:
| USB 4 20Gbps ports |
0 |
| USB 4 40Gbps ports |
0 |
| Thunderbolt 4 ports |
0 |
| USB 3.2 Gen 1 ports (USB-A) |
3 |
| Thunderbolt 3 ports |
0 |
| Has USB Type-C |
✕ |
| supports Wi-Fi |
✓ |
| Wi-Fi version |
Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n) |
| has an external memory slot |
✓ |
| Bluetooth version |
5.3 |
| RJ45 ports |
0 |
| DisplayPort outputs |
0 |
| has AirPlay |
✓ |
| mini DisplayPort outputs |
0 |
| has a VGA connector |
✕ |
Wired connectivity is handled by three USB 3.2 Gen 1 Type-A ports, while the laptop does not include USB Type-C, Thunderbolt 3 or 4, USB 4, a RJ45 Ethernet port, a VGA connector, or any DisplayPort or mini DisplayPort outputs. On the wireless side, it supports Wi-Fi 6 (802.11ax) along with backward-compatible Wi-Fi 5 and Wi-Fi 4 standards, and pairs that with Bluetooth 5.3 for peripheral connectivity. An external memory card slot is also present for removable storage, and the system includes AirPlay support for wireless content streaming.
Battery:
| Battery life |
14 hours |
| Has sleep-and-charge USB ports |
✕ |
| Has a MagSafe power adapter |
✕ |
The laptop is rated for 14 hours of battery life, offering a reasonable amount of untethered use for a productivity-class machine. It does not include sleep-and-charge USB ports, so connected devices will only charge when the system is powered on, and it does not use a MagSafe power adapter.
Features:
| has stereo speakers |
✓ |
| has a socket for a 3.5 mm audio jack |
✓ |
| supports ray tracing |
✕ |
| supports DLSS |
✕ |
| has Dolby Atmos |
✕ |
| Stylus included |
✕ |
| Has a fingerprint scanner |
✓ |
| number of microphones |
1 |
| Uses 3D facial recognition |
✕ |
| has voice commands |
✕ |
| has a front camera |
✓ |
| Has S/PDIF Out port |
✕ |
| has a gyroscope |
✕ |
| has GPS |
✕ |
| has an accelerometer |
✕ |
| has a compass |
✕ |
| Has an optical disc drive |
✕ |
The laptop includes stereo speakers, a 3.5 mm headset jack, and a front camera, covering the essentials for audio playback and video calls, while a single built-in microphone handles voice input. A fingerprint scanner is present for biometric login, though the machine does not support 3D facial recognition or voice commands. On the audio side, there is no Dolby Atmos or S/PDIF output, and no stylus is included despite the touchscreen display. The device also lacks an optical disc drive, GPS, gyroscope, accelerometer, and compass, and its GPU does not support ray tracing or DLSS.
Miscellaneous:
| clock multiplier |
33 |
| PassMark result (overclocked) |
23956 |
| GPU name |
Radeon 780M |
| Type |
Laptop |
| instruction sets |
MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2 |
| Uses big.LITTLE technology |
✕ |
| Has an unlocked multiplier |
✕ |
| Has NX bit |
✓ |
| L3 core |
2 MB/core |
| L3 cache |
16 MB |
| L2 core |
1 MB/core |
| L2 cache |
8 MB |
| L1 cache |
512 KB |
| render output units (ROPs) |
32 |
| texture mapping units (TMUs) |
48 |
| shading units |
768 |
| GPU execution units |
12 |
| OpenCL version |
2.1 |
| OpenGL version |
4.6 |
| Has integrated graphics |
✓ |
| Supports ECC memory |
✕ |
| memory channels |
2 |
| RAM speed (max) |
7500 MHz |
| CPU temperature |
100 °C |
| Thermal Design Power (TDP) |
28W |
The laptop CPU is a laptop-class processor with a clock multiplier of 33 and a thermal design power of 28W, with a maximum operating temperature of 100 °C. Its multiplier is locked and it does not use big.LITTLE technology, though it does carry the NX bit for hardware-level security. The processor supports a broad set of instruction sets including MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2, and memory runs across two channels at up to 7500 MHz, with ECC memory not supported. Cache is structured at 512 KB L1, 8 MB L2 at 1 MB per core, and 16 MB L3 at 2 MB per core. The integrated Radeon 780M GPU features 12 execution units, 768 shading units, 48 texture mapping units, and 32 render output units, with support for OpenCL 2.1 and OpenGL 4.6. An overclocked PassMark result of 23956 rounds out the available performance data for this configuration.