Arc B390 vs CMP 70HX

Primary details

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

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	Ampere (2020−2025)	Xe3-LPG (2026)
GPU code name	GA104	Panther Lake
Market segment	Workstation	Laptop
Release date	2021 (5 years ago)	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. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	3840	1536
Core clock speed	1365 MHz	300 MHz
Boost clock speed	1395 MHz	2500 MHz
Number of transistors	17,400 million	no data
Manufacturing process technology	8 nm	3 nm
Power consumption (TDP)	no data	80 Watt
Texture fill rate	167.4	120.0
Floating-point processing power	10.71 TFLOPS	7.68 TFLOPS
ROPs	64	24
TMUs	120	48
Tensor Cores	120	no data
Ray Tracing Cores	30	12
L1 Cache	3.8 MB	768 KB
L2 Cache	4 MB	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 1.0 x4	IGP
Length	267 mm	no data
Width	2-slot	no data
Supplementary power connectors	1x 12-pin	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	GDDR6X	System Shared
Maximum RAM amount	8 GB	System Shared
Memory bus width	256 Bit	System Shared
Memory clock speed	1188 MHz	System Shared
Memory bandwidth	608.3 GB/s	no data
Shared memory	-	+
Resizable BAR	+	-

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 Ultimate (12_2)	12 Ultimate (12_2)
Shader Model	6.8	6.9
OpenGL	4.6	4.6
OpenCL	3.0	3.0
Vulkan	1.3	1.4
CUDA	8.6	-
DLSS	+	-

Pros & cons summary

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Chip lithography

8 nm

3 nm