Radeon HD 6990M Crossfire vs RX 550
Aggregated performance score
HD 6990M Crossfire outperforms RX 550 by 43% based on our aggregated benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 521 | 415 |
| Place by popularity | 13 | not in top-100 |
| Cost-effectiveness evaluation | 3.23 | 8.87 |
| Architecture | GCN 4.0 (2016−2020) | Terascale 2 (2009−2015) |
| GPU code name | Lexa | Blackcomb XTX |
| Market segment | Desktop | Laptop |
| Release date | 20 April 2017 (7 years ago) | 12 July 2011 (12 years ago) |
| Launch price (MSRP) | $79 | no data |
| Current price | $121 (1.5x MSRP) | $170 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
HD 6990M Crossfire has 175% better value for money than RX 550.
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 512 | 2240 |
| Core clock speed | 1100 MHz | 715 MHz |
| Boost clock speed | 1183 MHz | no data |
| Number of transistors | 2,200 million | 2x1700 Million |
| Manufacturing process technology | 14 nm | 40 nm |
| Power consumption (TDP) | 50 Watt | no data |
| Texture fill rate | 37.86 | no data |
| Floating-point performance | 1,211 gflops | no data |
Form factor & compatibility
Information on Radeon RX 550 and Radeon HD 6990M Crossfire compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
| Laptop size | no data | large |
| Interface | PCIe 3.0 x8 | no data |
| Length | 145 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | None | no data |
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 | 4 GB | 2x2 GB |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 7000 MHz | 900 MHz |
| Memory bandwidth | 112.0 GB/s | no data |
| Shared memory | no data | - |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 1x DVI, 1x HDMI, 1x DisplayPort | no data |
| HDMI | + | no data |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 11 |
| Shader Model | 6.4 | no data |
| OpenGL | 4.6 | no data |
| OpenCL | 2.0 | no data |
| Vulkan | 1.2.131 | no data |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Average FPS across all PC games
Here are the average frames per second in a large set of popular games across different resolutions:
| 900p | 65−70
−52.3%
| 99
+52.3%
|
| Full HD | 75−80
−44%
| 108
+44%
|
Pros & cons summary
| Performance score | 7.01 | 10.00 |
| Recency | 20 April 2017 | 12 July 2011 |
| Chip lithography | 14 nm | 40 nm |
The Radeon HD 6990M Crossfire is our recommended choice as it beats the Radeon RX 550 in performance tests.
Be aware that Radeon RX 550 is a desktop card while Radeon HD 6990M Crossfire is a notebook one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
