Arc B390 vs Radeon RX 6800 XT
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 43 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 42.46 | no data |
| Power efficiency | 15.36 | no data |
| Architecture | RDNA 2.0 (2020−2025) | Xe3-LPG (2026) |
| GPU code name | Navi 21 | Panther Lake |
| Market segment | Desktop | Laptop |
| Release date | 28 October 2020 (5 years ago) | 27 January 2026 (less than a year ago) |
| Launch price (MSRP) | $649 | no data |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
Currently popular graphics cards are shown for comparison.
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 | 4608 | 1536 |
| Core clock speed | 1825 MHz | 300 MHz |
| Boost clock speed | 2250 MHz | 2500 MHz |
| Number of transistors | 26,800 million | no data |
| Manufacturing process technology | 7 nm | 3 nm |
| Power consumption (TDP) | 300 Watt | 80 Watt |
| Texture fill rate | 648.0 | 120.0 |
| Floating-point processing power | 20.74 TFLOPS | 7.68 TFLOPS |
| ROPs | 128 | 24 |
| TMUs | 288 | 48 |
| Ray Tracing Cores | 72 | 12 |
| L0 Cache | 1.1 MB | no data |
| L1 Cache | 1 MB | 768 KB |
| L2 Cache | 4 MB | 16 MB |
| L3 Cache | 128 MB | no data |
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 4.0 x16 | IGP |
| Length | 267 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 2x 8-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 | GDDR6 | System Shared |
| Maximum RAM amount | 16 GB | System Shared |
| Memory bus width | 256 Bit | System Shared |
| Memory clock speed | 2000 MHz | System Shared |
| Memory bandwidth | 512.0 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 | 1x HDMI, 2x DisplayPort, 1x USB Type-C | Portable Device Dependent |
| HDMI | + | - |
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 | 6.5 | 6.9 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 3.0 |
| Vulkan | 1.2 | 1.4 |
Synthetic benchmarks
Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.
Passmark
This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
3DMark 11 Performance GPU
3DMark 11 is an obsolete DirectX 11 benchmark by Futuremark. It used four tests based on two scenes, one being few submarines exploring the submerged wreck of a sunken ship, the other is an abandoned temple deep in the jungle. All the tests are heavy with volumetric lighting and tessellation, and despite being done in 1280x720 resolution, are relatively taxing. Discontinued in January 2020, 3DMark 11 is now superseded by Time Spy.
3DMark Vantage Performance
3DMark Vantage is an outdated DirectX 10 benchmark using 1280x1024 screen resolution. It taxes the graphics card with two scenes, one depicting a girl escaping some militarized base located within a sea cave, the other displaying a space fleet attack on a defenseless planet. It was discontinued in April 2017, and Time Spy benchmark is now recommended to be used instead.
3DMark Fire Strike Graphics
Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.
3DMark Cloud Gate GPU
Cloud Gate is an outdated DirectX 11 feature level 10 benchmark that was used for home PCs and basic notebooks. It displays a few scenes of some weird space teleportation device launching spaceships into unknown, using fixed resolution of 1280x720. Just like Ice Storm benchmark, it has been discontinued in January 2020 and replaced by 3DMark Night Raid.
3DMark Ice Storm GPU
Ice Storm Graphics is an obsolete benchmark, part of 3DMark suite. Ice Storm was used to measure entry level laptops and Windows-based tablets performance. It utilizes DirectX 11 feature level 9 to display a battle between two space fleets near a frozen planet in 1280x720 resolution. Discontinued in January 2020, it is now superseded by 3DMark Night Raid.
Pros & cons summary
| Recency | 28 October 2020 | 27 January 2026 |
| Chip lithography | 7 nm | 3 nm |
| Power consumption (TDP) | 300 Watt | 80 Watt |
Arc B390 has an age advantage of 5 years, a 133% more advanced lithography process, and 275% lower power consumption.
We couldn't decide between Radeon RX 6800 XT and Arc B390. We've got no test results to judge.
Be aware that Radeon RX 6800 XT is a desktop graphics card while Arc B390 is a notebook one.
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