Radeon HD 8670A vs GeForce GTX 660 Rev. 2
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 | Kepler (2012−2018) | GCN 1.0 (2012−2020) |
| GPU code name | GK104 | Sun |
| Market segment | Desktop | Laptop |
| Release date | 13 September 2014 (11 years ago) | 2 February 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. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 960 | 320 |
| Core clock speed | 980 MHz | 600 MHz |
| Boost clock speed | 1032 MHz | no data |
| Number of transistors | 3,540 million | 690 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 140 Watt | 45 Watt |
| Texture fill rate | 82.56 | 12.00 |
| Floating-point processing power | 1.981 TFLOPS | 0.384 TFLOPS |
| ROPs | 24 | 8 |
| TMUs | 80 | 20 |
| L1 Cache | 80 KB | 80 KB |
| L2 Cache | 384 KB | 128 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 3.0 x16 | MXM-A (3.0) |
| Length | 241 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x 6-pin | no data |
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 | DDR3 |
| Maximum RAM amount | 2 GB | 1 GB |
| Memory bus width | 192 Bit | 64 Bit |
| Memory clock speed | 1502 MHz | 1000 MHz |
| Memory bandwidth | 144.2 GB/s | 16 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 HDMI, 1x DisplayPort | Portable Device Dependent |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (11_1) |
| Shader Model | 5.1 | 6.5 (5.1) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 (1.2) |
| Vulkan | 1.1.126 | 1.2.170 |
| CUDA | 3.0 | - |
Pros & cons summary
| Recency | 13 September 2014 | 2 February 2013 |
| Maximum RAM amount | 2 GB | 1 GB |
| Power consumption (TDP) | 140 Watt | 45 Watt |
GTX 660 Rev. 2 has an age advantage of 1 year, and a 100% higher maximum VRAM amount.
HD 8670A, on the other hand, has 211% lower power consumption.
We couldn't decide between GeForce GTX 660 Rev. 2 and Radeon HD 8670A. We've got no test results to judge.
Be aware that GeForce GTX 660 Rev. 2 is a desktop graphics card while Radeon HD 8670A is a notebook one.
Other comparisons
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