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Lenovo Legion Slim 5 16IRH8 16" Intel Core i5-12450H 2GHz / Nvidia GeForce RTX 4050 Laptop / 16GB RAM / 512GB SSD specifications and in-depth review

Lenovo Legion Slim 5 16IRH8 16" Intel Core i5-12450H 2GHz / Nvidia GeForce RTX 4050 Laptop / 16GB RAM / 512GB SSD

Manufacturer: Lenovo

The Lenovo Legion Slim 5 16IRH8 is a 16″ gaming laptop that pairs an Intel Core i5-12450H processor with an Nvidia GeForce RTX 4050 GPU built on the Ada Lovelace architecture. Housed in a 19 mm thin chassis weighing 2,400 g, it occupies a middle ground between portability and gaming capability. The machine ships with 16GB of DDR5 RAM and a 512GB NVMe SSD, providing a functional base for both gaming sessions and everyday computing tasks.

The IPS LCD panel delivers a 1920 x 1200 resolution at 141 ppi across its 16″ surface, with a 144Hz refresh rate, 300 nits of typical brightness, and an anti-reflection coating. The RTX 4050 GPU brings 2,560 shading units, 6GB of GDDR6 VRAM, a base clock of 1,605 MHz boosting to 2,370 MHz, and a floating-point output of 12.13 TFLOPS, with support for DirectX 12 Ultimate, ray tracing, and DLSS. Connectivity includes two USB 3.2 Gen 2 Type-C ports, two USB 3.2 Gen 2 Type-A ports, one HDMI 2.1 output, an RJ45 port, Wi-Fi 6E, and Bluetooth 5.3, with an external memory slot also present.

Pros
  • The RTX 4050 GPU delivers 12.13 TFLOPS of floating-point performance with support for ray tracing and DLSS, enabling hardware-accelerated rendering in compatible games
  • 6GB of GDDR6 VRAM provides more headroom for graphically demanding workloads than the 4GB found in lower-tier configurations
  • The 144Hz IPS display with a 1920x1200 resolution and anti-reflection coating offers a wider aspect ratio and smooth visuals for gaming and media
  • Wi-Fi 6E support ensures access to the latest wireless standard for faster throughput and reduced network congestion
  • The 19 mm thin chassis keeps the physical footprint compact for a 16-inch gaming laptop with active cooling
  • Sleep-and-charge USB ports allow peripheral charging even when the system is powered off or in sleep mode
Cons
  • At 2,400 g, the laptop is relatively heavy for users who carry it daily
  • The GPU uses a 96-bit memory bus, which constrains memory bandwidth headroom for sustained high-resolution workloads
  • RAM is capped at 16GB with no upgrade path beyond what is already installed across the two memory slots
  • Display brightness is rated at only 300 nits, which may prove insufficient in bright or outdoor environments
  • No Thunderbolt 3, Thunderbolt 4, DisplayPort, or mini DisplayPort outputs are available, limiting high-bandwidth external connectivity options
  • The chassis is not weather-sealed, offering no protection against moisture or accidental splashes
Who is this for?

This laptop is a solid fit for gamers who want access to ray tracing and DLSS in a relatively slim 19 mm chassis without carrying excessive bulk. The 144Hz IPS display with a 1920x1200 resolution makes it well suited to users who prioritize smooth, detailed visuals for fast-paced gaming or content consumption. Students and users who split time between gaming and productivity will also find the combination of NVMe storage, DDR5 memory, and Wi-Fi 6E connectivity sufficient for multitasking, streaming, and day-to-day computing in home or campus settings.

Who is this NOT for?

Users who need a truly portable daily carry will find the 2,400 g weight a practical burden over time. Those working with VRAM-intensive creative applications or pushing graphically demanding titles at very high settings may run into the limits imposed by the GPU's 96-bit memory bus, which restricts sustained bandwidth headroom. Additionally, professionals who depend on high-bandwidth external device ecosystems — such as multi-monitor setups or fast storage peripherals — will be constrained by the complete absence of Thunderbolt and DisplayPort outputs, and anyone frequently working in brightly lit environments may find the 300-nit display brightness inadequate.

Design:

Type Gaming
weight 2400 g
Uses a fanless design ✕
Has a backlit keyboard ✓
warranty period 1 years
volume 1773.46 cm³
width 359 mm
height 260 mm
thickness 19 mm
is weather-sealed (splashproof) ✕

Classified as a gaming laptop, this machine measures 359 mm wide, 260 mm deep, and 19 mm thick, with a total volume of 1,773.46 cm³. It weighs 2,400 g and relies on active cooling rather than a fanless design. The keyboard includes backlighting, while the chassis offers no weather sealing or splashproofing. The laptop is covered by a 1-year warranty.

Display:

screen size 16"
resolution 1920 x 1200 px
pixel density 141 ppi
Display type LCD, LED-backlit, IPS
has a touch screen ✕
brightness (typical) 300 nits
refresh rate 144Hz
has anti-reflection coating ✓
supported displays 4

The display is a 16″ IPS LCD panel with LED backlighting, outputting at a 1920 x 1200 px resolution and a pixel density of 141 ppi. Typical brightness sits at 300 nits, and an anti-reflection coating is applied to the screen surface. With a 144Hz refresh rate, the panel is oriented toward smoother visual output during fast-paced content, though touch input is not supported. The system is capable of driving up to 4 displays simultaneously.

Performance:

RAM 16GB
RAM speed 4800 MHz
Uses flash storage ✓
internal storage 512GB
CPU speed 4 x 2 & 4 x 1.5 GHz
CPU threads 12 threads
VRAM 6GB
floating-point performance 12.13 TFLOPS
GDDR version GDDR6
texture rate 204.8 GTexels/s
pixel rate 113.76 GPixel/s
Is an NVMe SSD ✓
DirectX version DirectX 12 Ultimate
GPU clock speed 1605 MHz
uses multithreading ✓
maximum memory amount 16GB
DDR memory version 5
turbo clock speed 4.4GHz
GPU turbo 2370 MHz
memory slots 2
PCI Express (PCIe) version 4
semiconductor size 4 nm
has XeSS (XMX) ✕
Supports 64-bit ✓

The system runs on 16GB of DDR5 RAM at 4,800 MHz across two memory slots, with the memory capped at 16GB maximum, and pairs it with a 512GB NVMe SSD for flash-based storage. The CPU operates at 4 x 2 GHz and 4 x 1.5 GHz across its cores, reaching a turbo frequency of 4.4 GHz over 12 threads with multithreading enabled, fabricated on a 4 nm process with 64-bit support. The discrete GPU carries 6GB of GDDR6 VRAM, clocks from 1,605 MHz up to 2,370 MHz, and delivers 12.13 TFLOPS of floating-point performance alongside a texture rate of 204.8 GTexels/s and a pixel rate of 113.76 GPixel/s. The GPU supports DirectX 12 Ultimate and connects via PCIe 4, though XeSS (XMX) is not available.

Benchmarks:

Geekbench 6 result (multi) 8862
Geekbench 6 result (single) 2218
PassMark (G3D) result 17148
PassMark result 16698
PassMark result (single) 3348
Cinebench R20 (multi) result 3625
Cinebench R20 (single) result 640

In CPU benchmarking, the processor scores 8,862 in Geekbench 6 multi-core and 2,218 in the single-core test, while Cinebench R20 records a multi-core result of 3,625 and a single-core result of 640. The overall PassMark CPU score reaches 16,698, with a single-core PassMark of 3,348. On the graphics side, the GPU achieves a PassMark G3D score of 17,148, reflecting the rendering throughput of the Nvidia GeForce RTX 4050.

Connectivity:

USB 3.2 Gen 2 ports (USB-C) 2
USB 3.2 Gen 2 ports (USB-A) 2
USB 4 20Gbps ports 0
USB 4 40Gbps ports 0
Thunderbolt 4 ports 0
USB 3.2 Gen 1 ports (USB-C) 0
USB 3.2 Gen 1 ports (USB-A) 0
Thunderbolt 3 ports 0
has an HDMI output ✓
Has USB Type-C ✓
supports Wi-Fi ✓
Wi-Fi version Wi-Fi 6E (802.11ax), 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 1
HDMI ports 1
HDMI version HDMI 2.1
DisplayPort outputs 0
has AirPlay ✓
mini DisplayPort outputs 0
has a VGA connector ✕

Wired connectivity includes two USB 3.2 Gen 2 Type-C and two USB 3.2 Gen 2 Type-A ports, one HDMI 2.1 output, and one RJ45 port for a wired network connection, while Thunderbolt 3, Thunderbolt 4, USB 4, DisplayPort, mini DisplayPort, and VGA are all absent. Wireless communication is handled by Wi-Fi 6E (802.11ax), with backward compatibility for Wi-Fi 6, Wi-Fi 5, and Wi-Fi 4, alongside Bluetooth 5.3. An external memory slot is included, and AirPlay is supported.

Battery:

Has sleep-and-charge USB ports ✓
Has a MagSafe power adapter ✕

The laptop supports sleep-and-charge via its USB ports, allowing connected devices to be charged even when the system is in sleep mode or powered off. A MagSafe power adapter is not included.

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 2
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 ✕

Audio is covered by stereo speakers and a 3.5 mm headset jack, with two built-in microphones for voice capture; Dolby Atmos and S/PDIF output are not available. A front camera is present, while fingerprint scanning, 3D facial recognition, and voice commands are all absent. The GPU supports ray tracing and DLSS, enabling hardware-accelerated rendering features in compatible titles. The laptop includes no stylus, no optical disc drive, and none of the motion or location sensors — gyroscope, accelerometer, compass, and GPS are all absent.

Miscellaneous:

clock multiplier 20
number of transistors 18900 million
AMD SAM / Intel Resizable BAR Intel Resizable BAR
has LHR ✕
Thermal Design Power (TDP) 115W
Supports 3D ✓
Supports multi-display technology ✓
OpenCL version 3
OpenGL version 4.6
Supports ECC memory ✓
memory bus width 96-bit
effective memory speed 16000 MHz
maximum memory bandwidth 192 GB/s
render output units (ROPs) 48
texture mapping units (TMUs) 80
shading units 2560
Has Double Precision Floating Point (DPFP) ✓
GPU memory speed 2000 MHz
GPU architecture Ada Lovelace
GPU name Intel UHD Graphics
PassMark result (overclocked) 17684
Uses big.LITTLE technology ✓
L2 cache 7 MB
L1 cache 704 KB
L3 cache 12 MB
Has an unlocked multiplier ✕
Has NX bit ✓
CPU temperature 100 °C
GPU execution units 48
Has integrated graphics ✓
memory channels 2
Type Laptop
instruction sets SSE 4.2, SSE 4.1, AVX, AES, FMA3, F16C, MMX
RAM speed (max) 5200 MHz

The CPU has a clock multiplier of 20 with the multiplier locked, a TDP of 115W, and a maximum operating temperature of 100 °C; it uses big.LITTLE technology, supports ECC memory, Double Precision Floating Point, and NX bit, and operates across two memory channels with a maximum RAM speed of 5,200 MHz. The processor includes integrated Intel UHD Graphics with 48 execution units, alongside the dedicated Ada Lovelace-architecture GPU, which contains 2,560 shading units, 80 TMUs, 48 ROPs, a 96-bit memory bus, and a maximum memory bandwidth of 192 GB/s at an effective memory speed of 16,000 MHz. The GPU supports multi-display output, stereoscopic 3D, OpenCL 3, OpenGL 4.6, and Intel Resizable BAR, while LHR is not present. CPU cache levels include 704 KB L1, 7 MB L2, and 12 MB L3, with supported instruction sets covering SSE 4.1, SSE 4.2, AVX, AES, FMA3, F16C, and MMX. The GPU is built with 18,900 million transistors, and the overclocked PassMark result is recorded at 17,684.

Final Verdict

The Lenovo Legion Slim 5 16IRH8 (i5-12450H / RTX 4050) presents a coherent gaming laptop built around the Ada Lovelace GPU architecture, offering 12.13 TFLOPS of floating-point performance alongside ray tracing and DLSS support within a 19 mm chassis. The 144Hz IPS display, Wi-Fi 6E, and NVMe storage give it a well-rounded foundation for both gaming and everyday productivity use. Its constraints — notably the 96-bit memory bus, 300-nit display, fixed 16GB RAM ceiling, and absence of Thunderbolt connectivity — define a clear boundary on its versatility, making it best suited to users whose demands stay within those limits. For that audience, the Legion Slim 5 16IRH8 delivers a focused and capable gaming experience in a relatively compact form factor.