A100X vs ATI Radeon HD 4855
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 (2005−2013) | Ampere (2020−2025) |
| GPU code name | RV770 | GA100 |
| Market segment | Desktop | Workstation |
| Release date | 3 January 2010 (16 years ago) | 28 June 2021 (5 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. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 640 | 6912 |
| Core clock speed | 575 MHz | 795 MHz |
| Boost clock speed | no data | 1440 MHz |
| Number of transistors | 956 million | 54,200 million |
| Manufacturing process technology | 55 nm | 7 nm |
| Power consumption (TDP) | 110 Watt | 300 Watt |
| Texture fill rate | 18.40 | 622.1 |
| Floating-point processing power | 0.736 TFLOPS | 19.91 TFLOPS |
| ROPs | 16 | 160 |
| TMUs | 32 | 432 |
| Tensor Cores | no data | 432 |
| L1 Cache | 128 KB | 20.3 MB |
| L2 Cache | 256 KB | 80 MB |
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 2.0 x16 | PCIe 4.0 x8 |
| Length | 220 mm | 267 mm |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 1x 6-pin | 1x 16-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 | HBM2e |
| Maximum RAM amount | 512 MB | 80 GB |
| Memory bus width | 256 Bit | 5120 Bit |
| Memory clock speed | 900 MHz | 1593 MHz |
| Memory bandwidth | 115.2 GB/s | 2,039 GB/s |
| Resizable BAR | - | + |
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 | 1x DVI, 1x HDMI, 1x VGA | No outputs |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 10.1 (10_1) | N/A |
| Shader Model | 4.1 | N/A |
| OpenGL | 3.3 | N/A |
| OpenCL | 1.1 | 3.0 |
| Vulkan | N/A | N/A |
| CUDA | - | 8.0 |
| DLSS | - | + |
Pros & cons summary
| Recency | 3 January 2010 | 28 June 2021 |
| Maximum RAM amount | 512 MB | 80 GB |
| Chip lithography | 55 nm | 7 nm |
| Power consumption (TDP) | 110 Watt | 300 Watt |
ATI HD 4855 has 173% lower power consumption.
A100X, on the other hand, has an age advantage of 11 years, a 15900% higher maximum VRAM amount, and a 686% more advanced lithography process.
We couldn't decide between Radeon HD 4855 and A100X. We've got no test results to judge.
Be aware that Radeon HD 4855 is a desktop graphics card while A100X is a workstation one.
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