Radeon RX 6800M vs HD 6990M Rebrand
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 194 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 16.81 |
| Architecture | TeraScale 2 (2009−2015) | RDNA 2.0 (2020−2025) |
| GPU code name | Broadway | Navi 22 |
| Market segment | Laptop | Laptop |
| Release date | 12 July 2011 (14 years ago) | 31 May 2021 (4 years 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 | 800 | 2560 |
| Core clock speed | 800 MHz | 2116 MHz |
| Boost clock speed | no data | 2390 MHz |
| Number of transistors | 1,040 million | 17,200 million |
| Manufacturing process technology | 40 nm | 7 nm |
| Power consumption (TDP) | 100 Watt | 145 Watt |
| Texture fill rate | 32.00 | 382.4 |
| Floating-point processing power | 1.28 TFLOPS | 12.24 TFLOPS |
| ROPs | 16 | 64 |
| TMUs | 40 | 160 |
| Ray Tracing Cores | no data | 40 |
| L0 Cache | no data | 640 KB |
| L1 Cache | 112 KB | 512 KB |
| L2 Cache | 256 KB | 3 MB |
| L3 Cache | no data | 96 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).
| Laptop size | no data | large |
| Interface | MXM-B (3.0) | PCIe 4.0 x16 |
| 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 | GDDR5 | GDDR6 |
| Maximum RAM amount | 1 GB | 12 GB |
| Memory bus width | 128 Bit | 192 Bit |
| Memory clock speed | 1100 MHz | 2000 MHz |
| Memory bandwidth | 70.4 GB/s | 384.0 GB/s |
| 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 | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.0 | 6.5 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | N/A | 1.3 |
Pros & cons summary
| Recency | 12 July 2011 | 31 May 2021 |
| Maximum RAM amount | 1 GB | 12 GB |
| Chip lithography | 40 nm | 7 nm |
| Power consumption (TDP) | 100 Watt | 145 Watt |
HD 6990M Rebrand has 45% lower power consumption.
RX 6800M, on the other hand, has an age advantage of 9 years, a 1100% higher maximum VRAM amount, and a 471.4% more advanced lithography process.
We couldn't decide between Radeon HD 6990M Rebrand and Radeon RX 6800M. We've got no test results to judge.
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