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Side-by-side specification comparison of two reference models
A full side-by-side comparison of reference models Gram 15Z975 and XPS 15 9550 within the same category.
Side-by-side specification comparison of two reference models
| Specification | Gram 15Z975 | XPS 15 9550 |
|---|---|---|
| Price | Not for sale | Not for sale |
| General | ||
| Brand | LG | Dell |
| Product Family | Gram | Dell XPS |
| Model | Gram 15Z975 | XPS 15 9550 |
| Model Number | 15Z975-U.AP71U1 | XPS 15 9550 |
| Part Number / SKU | 15Z975-U.AP71U1 | — |
| Launch Year | 2018 year | 2016 year |
| Form Factor | Clamshell | Clamshell |
| Laptop Category | Premium / Ultraportable | Mainstream |
| Color | Dark Silver | — |
| Operating System | Windows 10 Pro | Windows 10 |
| Operating System Architecture | 64-bit | 64-bit |
| Processor | ||
| Processor Manufacturer | Intel | Intel |
| Processor Family | Intel Core i7 | Intel Core i5 |
| Processor Model | Intel Core i7 8550U 1.8GHz | Intel Core i5-6300HQ |
| Processor Generation | 8th Gen | 6th Gen (Skylake) |
| CPU Architecture | x86-64 | Skylake-H |
| CPU Process Node | 14 nm | 14 nm |
| CPU Cores | 4 cores | 4 cores |
| Efficiency Cores | 0 cores | 0 cores |
| CPU Threads | 8 threads | 4 threads |
| CPU Base Clock | 1.8 GHz | 2.3 GHz |
| CPU Max Boost Clock | 4 GHz | 3.2 GHz |
| L2 Cache | — | 1 MB |
| L3 Cache | 8 MB | 6 MB |
| Processor Base Power | 15 W | 45 W |
| Maximum Processor Power | — | 45 W |
| CPU Manageability Technology | — | Intel Standard Manageability; Intel vPro not supported |
| Graphics | ||
| Graphics Type | Integrated | Discrete |
| GPU Manufacturer | Intel | NVIDIA |
| GPU Model | Intel UHD Graphics 620 | NVIDIA GeForce GTX 960M |
| GPU Architecture | — | Maxwell |
| VRAM Capacity | 0 GB | 2 GB |
| VRAM Type | Shared system memory | GDDR5 |
| GPU TGP | — | 50 W |
| GPU Boost Clock | 1150 MHz | 1176 MHz |
| Maximum External Displays | — | 3 displays |
| Maximum External Resolution | — | 3840 x 2160 @ 60 Hz |
| Memory | ||
| Installed Memory | 16 GB | 8 GB |
| Maximum Memory | — | 32 GB |
| Memory Type | DDR4 | DDR4 |
| Memory Speed | 2400 MT/s | 2133 MT/s |
| Memory Form Factor | SO-DIMM + Soldered | SO-DIMM |
| Memory Slots | 1 slots | 2 slots |
| Memory Slots Used | 1 slots | 1 slots |
| Memory Upgradeable | Partially | Yes |
| Memory Channels | Dual | Dual-channel capable |
| Storage | ||
| Primary Storage Type | SSD | SSD |
| Storage Capacity | 512 GB | 256 GB |
| Storage Interface | SATA III | SATA III / PCIe NVMe |
| Storage Form Factor | M.2 2280 | M.2 + optional 2.5-inch |
| Installed Storage Drives | 1 drives | 1 drives |
| Maximum Storage Drives | — | 2 drives |
| M.2 Storage Slots | — | 1 slots |
| 2.5-inch Drive Bay | — | Yes |
| RAID Support | — | — |
| Card Reader | Yes | Yes |
| Card Reader Formats | microSD | SD/SDHC/SDXC |
| Card Reader Standard | — | SD 4.0 |
| Display | ||
| Display Size | 15.6 inch | 15.6 inch |
| Display Resolution | 1920 x 1080 | 3840 x 2160 |
| Resolution Class | FHD | UHD 4K |
| Display Technology | IPS LCD | LED-backlit LCD |
| Panel Type | IPS | IPS |
| Touchscreen | — | Yes |
| Refresh Rate | — | 60 Hz |
| Display Brightness | — | 400 nits |
| sRGB Color Gamut | 100 % | — |
| Color Depth | — | 8-bit |
| Aspect Ratio | 16:9 | 16:9 |
| Display Finish | — | Anti-glare |
| Viewing Angle | — | 160° degree |
| Flicker-Free | — | Yes |
| Camera & Biometrics | ||
| Webcam Resolution | HD | 720p HD |
| Webcam Frame Rate | — | 30 fps |
| Fingerprint Reader | Yes | — |
| Audio | ||
| Speaker Configuration | Stereo 2-speaker | 2 speakers |
| Speaker Power | 1 x 2 W | — |
| Audio Technology | DTS Headphone:X | Waves MaxxAudio Pro |
| Microphone Configuration | — | Digital-array microphone |
| Audio Jack | Yes | Yes |
| Keyboard & Input | ||
| Keyboard Type | — | Full-size island-style keyboard |
| Keyboard Backlight | Yes | Yes |
| Touchpad Type | — | Multi-touch precision touchpad |
| Wireless & Networking | ||
| Wi-Fi Standard | Wi-Fi 5 | Wi-Fi 5 (802.11ac) |
| Wi-Fi IEEE Standard | 802.11ac | 802.11ac |
| Wi-Fi Bands | 2.4 GHz, 5 GHz | 2.4 GHz; 5 GHz |
| Wi-Fi Spatial Streams | 2x2 | 2x2 |
| Wi-Fi Module | — | Intel dual-band wireless |
| Bluetooth Version | Bluetooth 4.1 | 4.2 |
| Ethernet | Yes | — |
| Ethernet Speed | 10/100 via adapter | Not present |
| WWAN | No | No |
| SIM Slot | — | — |
| Ports & Expansion | ||
| USB Type-A Port Count | 3 ports | 2 ports |
| USB Type-A Specifications | USB 3.0 x 2, USB 2.0 x 1 | USB 3.x Type-A |
| USB Type-C Port Count | 1 ports | 1 ports |
| USB Type-C Specifications | USB Type-C x 1 | USB 3.x Type-C; DisplayPort Alt Mode where supported |
| USB4 Port Count | 0 ports | 0 ports |
| Thunderbolt Port Count | 0 ports | 1 ports |
| HDMI Port Count | 1 ports | 1 ports |
| HDMI Version | — | HDMI 1.4 |
| DisplayPort Output | — | Mini DisplayPort / USB-C DisplayPort Alt Mode |
| RJ-45 Port Count | 0 ports | 0 ports |
| 3.5 mm Audio Combo Port Count | 1 ports | 1 ports |
| SD Card Slot Count | 0 ports | 1 ports |
| microSD Card Slot Count | 1 ports | 0 ports |
| Smart Card Reader | No | No |
| Security Lock Slot | — | Yes |
| Internal PCIe Slots | — | 1 M.2 storage slot(s) |
| Battery & Power | ||
| Battery Capacity | 60.06 Wh | 56 Wh |
| Battery Cells | 4 cells | 3 cells |
| Battery Chemistry | Lithium-ion polymer | Lithium-ion |
| Battery Life | 13.4 hours | — |
| Battery Life Test Method | MobileMark 2014 | — |
| Power Adapter | — | 130 W |
| Power Connector | DC-In | Barrel power connector |
| USB-C Charging | Yes | — |
| Dimensions & Build | ||
| Width | 358.14 mm | 357 mm |
| Depth | 228.6 mm | 235 mm |
| Thickness | 15.24 mm | 17 mm |
| Weight | 1.09 kg | 2.04 kg |
| Chassis Material | Metal alloy, Nano Carbon, Magnesium | Aluminum; carbon fiber |
| Lid Material | — | Aluminum |
| Base Material | — | Carbon fiber composite |
| Hinge Opening Angle | — | 135 degree |
| MIL-STD Testing | MIL-STD-810G | Not claimed |
| IP Rating | — | — |
| Security & Manageability | ||
| TPM | Firmware TPM (Intel PTT) | TPM 2.0 |
| BIOS / UEFI Password Support | Yes | Yes |
| Drive Password Support | Yes | Yes |
| Secure Boot | — | Yes |
| Enterprise Manageability | — | Consumer BIOS/UEFI management |
| Smart Card Support | No | No |
| BIOS Recovery / Self-Healing | — | BIOS recovery supported |
| Certifications & Sustainability | ||
| ENERGY STAR | — | Not claimed |
| EPEAT | — | Not claimed |
| TCO Certified | — | Not claimed |
| RoHS Compliance | — | Yes |
| Recycled Materials | — | Not claimed |
| Environment & Warranty | ||
| Operating Temperature | — | 5 to 35 °C |
| Operating Humidity | — | 10 to 90 (non-condensing) % RH |
| Storage Temperature | — | -20 to 60 °C |
| Warranty | 1 years | 1 years |
| Warranty Type | Parts and labor | Limited hardware warranty; region dependent |
Gram 15Z975 and XPS 15 9550 share specifications such as Display Size (15.6 inch), Form Factor (Clamshell), Operating System Architecture (64-bit), Processor Manufacturer (Intel).
The main differences: Processor Model (Gram 15Z975: Intel Core i7 8550U 1.8GHz, XPS 15 9550: Intel Core i5-6300HQ); GPU Model (Gram 15Z975: Intel UHD Graphics 620, XPS 15 9550: NVIDIA GeForce GTX 960M); Installed Memory (Gram 15Z975: 16 GB, XPS 15 9550: 8 GB); Storage Capacity (Gram 15Z975: 512 GB, XPS 15 9550: 256 GB).
Gram 15Z975 may suit users who need its differing values, while XPS 15 9550 benefits those who need its paired strengths. Review the specs table above before deciding.
