Radeon RX 6900 vs R9 270
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 394 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 4.83 | no data |
| Architecture | GCN 1.0 (2012−2020) | RDNA 2.0 (2020−2022) |
| GPU code name | Curacao | Navi 21 |
| Market segment | Desktop | Desktop |
| Release date | 13 November 2013 (10 years ago) | 28 October 2020 (3 years ago) |
| Launch price (MSRP) | $179 | no data |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 | 1280 | 4608 |
| Core clock speed | 900 MHz | no data |
| Boost clock speed | 925 MHz | 2105 MHz |
| Number of transistors | 2,800 million | 23,000 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 150 Watt | 255 Watt |
| Texture fill rate | 74.00 | 606.2 |
| Floating-point performance | 2,368 gflops | 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 3.0 x16 | PCIe 4.0 x16 |
| Length | 210 mm | no data |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 1x 6-pin | 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 | 2 GB | 16 GB |
| Memory bus width | 256 Bit | 256 Bit |
| Memory clock speed | 5600 MHz | 16 GB/s |
| Memory bandwidth | 179.2 GB/s | 512.0 GB/s |
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 | 2x DVI, 1x HDMI, 1x DisplayPort | 1x HDMI, 2x DisplayPort, 1x USB Type-C |
| HDMI | + | + |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.5 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.2.131 | 1.2 |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. 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.
Pros & cons summary
| Recency | 13 November 2013 | 28 October 2020 |
| Maximum RAM amount | 2 GB | 16 GB |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 150 Watt | 255 Watt |
R9 270 has 70% lower power consumption.
RX 6900, on the other hand, has an age advantage of 6 years, a 700% higher maximum VRAM amount, and a 300% more advanced lithography process.
We couldn't decide between Radeon R9 270 and Radeon RX 6900. We've got no test results to judge.
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.
