ATI Radeon HD 4855 vs ATI HD 4830
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 918 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.25 | no data |
| Power efficiency | 1.67 | no data |
| Architecture | TeraScale (2005−2013) | TeraScale (2005−2013) |
| GPU code name | RV770 | RV770 |
| Market segment | Desktop | Desktop |
| Release date | 21 October 2008 (17 years ago) | 3 January 2010 (15 years ago) |
| Launch price (MSRP) | $130 | no data |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
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 | 640 | 640 |
| Core clock speed | 575 MHz | 575 MHz |
| Number of transistors | 956 million | 956 million |
| Manufacturing process technology | 55 nm | 55 nm |
| Power consumption (TDP) | 95 Watt | 110 Watt |
| Texture fill rate | 18.40 | 18.40 |
| Floating-point processing power | 0.736 TFLOPS | 0.736 TFLOPS |
| ROPs | 16 | 16 |
| TMUs | 32 | 32 |
| L1 Cache | 128 KB | 128 KB |
| L2 Cache | 256 KB | 256 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).
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Length | 246 mm | 220 mm |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | 1x 6-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 | GDDR3 | GDDR5 |
| Maximum RAM amount | 512 MB | 512 MB |
| Memory bus width | 256 Bit | 256 Bit |
| Memory clock speed | 900 MHz | 900 MHz |
| Memory bandwidth | 57.6 GB/s | 115.2 GB/s |
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 S-Video | 1x DVI, 1x HDMI, 1x VGA |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 10.1 (10_1) | 10.1 (10_1) |
| Shader Model | 4.1 | 4.1 |
| OpenGL | 3.3 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | N/A | N/A |
Pros & cons summary
| Recency | 21 October 2008 | 3 January 2010 |
| Power consumption (TDP) | 95 Watt | 110 Watt |
ATI HD 4830 has 15.8% lower power consumption.
ATI HD 4855, on the other hand, has an age advantage of 1 year.
We couldn't decide between Radeon HD 4830 and Radeon HD 4855. We've got no test results to judge.
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