Radeon HD 6490 vs HD 7970 X2
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN 1.0 (2011−2020) | TeraScale 2 (2009−2015) |
| GPU code name | New Zealand | Redwood |
| Market segment | Desktop | Desktop |
| Release date | 31 August 2012 (12 years ago) | 4 July 2011 (13 years ago) |
| Launch price (MSRP) | $899 | no data |
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 | 2048 | 320 |
| Core clock speed | 925 MHz | 550 MHz |
| Number of transistors | 4,313 million | 627 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 500 Watt | 39 Watt |
| Texture fill rate | 118.4 | 8.800 |
| Floating-point processing power | 3.789 TFLOPS | 0.352 TFLOPS |
| ROPs | 32 | 8 |
| TMUs | 128 | 16 |
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 2.0 x16 |
| Length | 292 mm | 165 mm |
| Width | 2-slot | 1-slot |
| Supplementary power connectors | 3x 8-pin | 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 | DDR2 |
| Maximum RAM amount | 3 GB | 1 GB |
| Memory bus width | 384 Bit | 128 Bit |
| Memory clock speed | 1375 MHz | 500 MHz |
| Memory bandwidth | 264.0 GB/s | 16 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 | 1x DVI, 4x mini-DisplayPort | 1x DVI, 1x HDMI, 1x VGA |
| HDMI | - | + |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 11.2 (11_0) |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2.131 | N/A |
Pros & cons summary
| Recency | 31 August 2012 | 4 July 2011 |
| Maximum RAM amount | 3 GB | 1 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 500 Watt | 39 Watt |
HD 7970 X2 has an age advantage of 1 year, a 200% higher maximum VRAM amount, and a 42.9% more advanced lithography process.
HD 6490, on the other hand, has 1182.1% lower power consumption.
We couldn't decide between Radeon HD 7970 X2 and Radeon HD 6490. 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.
