ATI Radeon HD 4855 vs GeForce GTX 1080 11Gbps
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 | Pascal (2016−2021) | TeraScale (2005−2013) |
| GPU code name | GP104 | RV770 |
| Market segment | Desktop | Desktop |
| Release date | 20 April 2017 (7 years ago) | 3 January 2010 (14 years ago) |
| Launch price (MSRP) | $499 | 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 | 2560 | 640 |
| Core clock speed | 1607 MHz | 575 MHz |
| Boost clock speed | 1733 MHz | no data |
| Number of transistors | 7,200 million | 956 million |
| Manufacturing process technology | 16 nm | 55 nm |
| Power consumption (TDP) | 180 Watt | 110 Watt |
| Texture fill rate | 277.3 | 18.40 |
| Floating-point processing power | 8.873 TFLOPS | 0.736 TFLOPS |
| ROPs | 64 | 16 |
| TMUs | 160 | 32 |
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 | 267 mm | 220 mm |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 1x 8-pin | 1x 6-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 | GDDR5X | GDDR5 |
| Maximum RAM amount | 8 GB | 512 MB |
| Memory bus width | 256 Bit | 256 Bit |
| Memory clock speed | 1376 MHz | 900 MHz |
| Memory bandwidth | 352.3 GB/s | 115.2 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, 1x HDMI, 3x 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 (12_1) | 10.1 (10_1) |
| Shader Model | 6.4 | 4.1 |
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.2.131 | N/A |
| CUDA | 6.1 | - |
Pros & cons summary
| Recency | 20 April 2017 | 3 January 2010 |
| Maximum RAM amount | 8 GB | 512 MB |
| Chip lithography | 16 nm | 55 nm |
| Power consumption (TDP) | 180 Watt | 110 Watt |
GTX 1080 11Gbps has an age advantage of 7 years, a 1500% higher maximum VRAM amount, and a 243.8% more advanced lithography process.
ATI HD 4855, on the other hand, has 63.6% lower power consumption.
We couldn't decide between GeForce GTX 1080 11Gbps and Radeon HD 4855. 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
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