Radeon Sky 900 vs HD 6770 Green Edition
Contents
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 | TeraScale 2 (2009−2015) | GCN 1.0 (2012−2020) |
| GPU code name | Juniper | Tahiti |
| Market segment | Desktop | Workstation |
| Release date | 19 April 2013 (12 years ago) | 27 March 2013 (13 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 | 720 | 3584 ×2 |
| Core clock speed | 700 MHz | 825 MHz |
| Boost clock speed | no data | 950 MHz |
| Number of transistors | 1,040 million | 4,313 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Power consumption (TDP) | 86 Watt | 300 Watt |
| Texture fill rate | 25.20 | 106.4 ×2 |
| Floating-point processing power | 1.008 TFLOPS | 3.405 TFLOPS ×2 |
| ROPs | 16 | 32 ×2 |
| TMUs | 36 | 112 ×2 |
| L1 Cache | 72 KB | 448 KB |
| L2 Cache | 256 KB | 768 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).
| Bus support | no data | PCIe 3.0 |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Length | 170 mm | 305 mm |
| Width | 2-slot | 2-slot |
| Form factor | no data | full height / full length |
| Supplementary power connectors | no data | 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 | GDDR3 | GDDR5 |
| Maximum RAM amount | 2 GB | 6 GB ×2 |
| Memory bus width | 128 Bit | 384 Bit ×2 |
| Memory clock speed | 667 MHz | 1250 MHz |
| Memory bandwidth | 21.34 GB/s | 480 GB/s ×2 |
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 | 2x DVI, 1x HDMI, 2x mini-DisplayPort | 1x DVI, 1x mini-DisplayPort |
| HDMI | + | - |
| Dual-link DVI support | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 (11_1) |
| Shader Model | 5.0 | 5.1 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Maximum RAM amount | 2 GB | 6 GB |
| Chip lithography | 40 nm | 28 nm |
| Power consumption (TDP) | 86 Watt | 300 Watt |
HD 6770 Green Edition has 249% lower power consumption.
Sky 900, on the other hand, has a 200% higher maximum VRAM amount, and a 43% more advanced lithography process.
We couldn't decide between Radeon HD 6770 Green Edition and Radeon Sky 900. We've got no test results to judge.
Be aware that Radeon HD 6770 Green Edition is a desktop graphics card while Radeon Sky 900 is a workstation one.
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