Arc B390 vs T400 Mobile

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking	not rated	300
Place by popularity	not in top-100	not in top-100
Power efficiency	no data	20.75
Architecture	Turing (2018−2022)	Xe3-LPG (2026)
GPU code name	TU117	Panther Lake
Market segment	Laptop	Laptop
Release date	no data	27 January 2026 (less than a year ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.

Pipelines / CUDA cores	896	1536
Core clock speed	no data	300 MHz
Boost clock speed	1425 MHz	2500 MHz
Number of transistors	4,700 million	no data
Manufacturing process technology	12 nm	3 nm
Power consumption (TDP)	18 Watt	80 Watt
Texture fill rate	79.80	120.0
Floating-point processing power	2.554 TFLOPS	7.68 TFLOPS
ROPs	32	24
TMUs	56	48
Ray Tracing Cores	no data	12
L1 Cache	no data	768 KB
L2 Cache	no data	16 MB

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 3.0 x16	IGP
Supplementary power connectors	no data	None

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR6	System Shared
Maximum RAM amount	2 GB	System Shared
Memory bus width	64 Bit	System Shared
Memory clock speed	10 GB/s	System Shared
Memory bandwidth	80 GB/s	no data
Shared memory	-	+

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors

No outputs

Portable Device Dependent

API and SDK support

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (12_1)	12 Ultimate (12_2)
Shader Model	6.6	6.9
OpenGL	4.6	4.6
OpenCL	3.0	3.0
Vulkan	1.2	1.4
CUDA	7.5	-

Pros & cons summary

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Chip lithography	12 nm	3 nm
Power consumption (TDP)	18 Watt	80 Watt