Radeon RX 540X vs HD 6990M
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 700 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 3.52 | no data |
| Architecture | TeraScale 2 (2009−2015) | GCN 4.0 (2016−2020) |
| GPU code name | Blackcomb | Polaris 23 |
| Market segment | Laptop | Laptop |
| Release date | 12 July 2011 (14 years ago) | 11 April 2018 (8 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 | 1120 | 512 |
| Core clock speed | 715 MHz | 1124 MHz |
| Boost clock speed | no data | 1219 MHz |
| Number of transistors | 1,700 million | 2,200 million |
| Manufacturing process technology | 40 nm | 14 nm |
| Power consumption (TDP) | 100 Watt | 50 Watt |
| Texture fill rate | 40.04 | 39.01 |
| Floating-point processing power | 1.602 TFLOPS | 1.248 TFLOPS |
| ROPs | 32 | 16 |
| TMUs | 56 | 32 |
| L1 Cache | 224 KB | 128 KB |
| L2 Cache | 512 KB | 512 KB |
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 | large | large |
| Interface | MXM-B (3.0) | PCIe 3.0 x8 |
| Supplementary power connectors | None | 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 | GDDR5 |
| Maximum RAM amount | 2 GB | 2 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 900 MHz | 1500 MHz |
| Memory bandwidth | 115.2 GB/s | 96 GB/s |
| 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 | No outputs |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| FreeSync | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 (12_0) |
| Shader Model | 5.0 | 6.4 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 12 July 2011 | 11 April 2018 |
| Chip lithography | 40 nm | 14 nm |
| Power consumption (TDP) | 100 Watt | 50 Watt |
RX 540X has an age advantage of 6 years, a 186% more advanced lithography process, and 100% lower power consumption.
We couldn't decide between Radeon HD 6990M and Radeon RX 540X. We've got no test results to judge.
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