Radeon RX 6800 3456SP vs R9 M275X
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 744 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN 1.0 (2012−2020) | RDNA 2.0 (2020−2025) |
| GPU code name | Venus | Navi 21 |
| Market segment | Laptop | Desktop |
| Release date | 28 January 2014 (11 years ago) | no data |
| Launch price (MSRP) | no data | $579 |
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 | 640 | 3456 |
| Compute units | 10 | no data |
| Core clock speed | 900 MHz | 1700 MHz |
| Boost clock speed | 925 MHz | 2250 MHz |
| Number of transistors | 1,500 million | 26,800 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | no data | 250 Watt |
| Texture fill rate | 37.00 | 486.0 |
| Floating-point processing power | 1.184 TFLOPS | 15.55 TFLOPS |
| ROPs | 16 | 96 |
| TMUs | 40 | 216 |
| Ray Tracing Cores | no data | 54 |
| L0 Cache | no data | 864 KB |
| L1 Cache | 160 KB | 768 KB |
| L2 Cache | 256 KB | 4 MB |
| L3 Cache | no data | 128 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).
| Bus support | PCIe 3.0 x16 | no data |
| Interface | PCIe 3.0 x16 | PCIe 4.0 x16 |
| Length | no data | 267 mm |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | 2x 8-pin |
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 | GDDR5 | GDDR6 |
| Maximum RAM amount | 4 GB | 16 GB |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 1125 MHz | 2000 MHz |
| Memory bandwidth | 72 GB/s | 512.0 GB/s |
| 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 | 1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C |
| Eyefinity | + | - |
| HDMI | - | + |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| FreeSync | + | - |
| HD3D | + | - |
| PowerTune | + | - |
| DualGraphics | + | - |
| ZeroCore | + | - |
| Switchable graphics | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | DirectX® 11 | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.8 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | Not Listed | 2.1 |
| Vulkan | - | 1.3 |
| Mantle | + | - |
Pros & cons summary
| Maximum RAM amount | 4 GB | 16 GB |
| Chip lithography | 28 nm | 7 nm |
RX 6800 3456SP has a 300% higher maximum VRAM amount, and a 300% more advanced lithography process.
We couldn't decide between Radeon R9 M275X and Radeon RX 6800 3456SP. We've got no test results to judge.
Be aware that Radeon R9 M275X is a notebook graphics card while Radeon RX 6800 3456SP is a desktop one.
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