Radeon HD 8870 OEM vs ATI Mobility HD 4830
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1072 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | TeraScale (2005−2013) | GCN 1.0 (2012−2020) |
| GPU code name | M97 | Pitcairn |
| Market segment | Laptop | Desktop |
| Release date | 3 March 2009 (17 years ago) | 8 January 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 | 640 | 1280 |
| Core clock speed | 550 MHz | 1000 MHz |
| Number of transistors | 826 million | 2,800 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Power consumption (TDP) | no data | 175 Watt |
| Texture fill rate | 17.60 | 80.00 |
| Floating-point processing power | 0.704 TFLOPS | 2.56 TFLOPS |
| ROPs | 16 | 32 |
| TMUs | 32 | 80 |
| L1 Cache | 128 KB | 320 KB |
| L2 Cache | 128 KB | 512 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).
| Laptop size | large | no data |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Length | no data | 241 mm |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | 2x 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 | GDDR5 | GDDR5 |
| Maximum RAM amount | 1 GB | 2 GB |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 700 MHz | 1200 MHz |
| Memory bandwidth | 44.8 GB/s | 153.6 GB/s |
| Shared memory | - | - |
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 | No outputs | 1x DVI, 1x HDMI, 2x mini-DisplayPort |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 10.1 (10_1) | 12 (11_1) |
| Shader Model | 4.1 | 5.1 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 3 March 2009 | 8 January 2013 |
| Maximum RAM amount | 1 GB | 2 GB |
| Chip lithography | 40 nm | 28 nm |
HD 8870 OEM has an age advantage of 3 years, a 100% higher maximum VRAM amount, and a 43% more advanced lithography process.
We couldn't decide between Mobility Radeon HD 4830 and Radeon HD 8870 OEM. We've got no test results to judge.
Be aware that Mobility Radeon HD 4830 is a notebook graphics card while Radeon HD 8870 OEM is a desktop one.
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