Radeon HD 6850 vs GeForce GTX 660 OEM
Aggregate performance score
We've compared GeForce GTX 660 OEM and Radeon HD 6850, covering specs and all relevant benchmarks.
HD 6850 outperforms GTX 660 OEM by a substantial 38% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 711 | 623 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.96 |
| Power efficiency | 1.90 | 2.95 |
| Architecture | Kepler (2012−2018) | TeraScale 2 (2009−2015) |
| GPU code name | GK104 | Barts |
| Market segment | Desktop | Desktop |
| Design | no data | reference |
| Release date | 22 August 2012 (12 years ago) | 21 October 2010 (13 years ago) |
| Launch price (MSRP) | no data | $179 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 | 1152 | 960 |
| Core clock speed | 823 MHz | no data |
| Boost clock speed | 888 MHz | no data |
| Number of transistors | 3,540 million | 1,700 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 130 Watt | 127 Watt |
| Texture fill rate | 85.25 | 37.20 |
| Floating-point processing power | 2.046 TFLOPS | 1.488 TFLOPS |
| ROPs | 32 | 32 |
| TMUs | 96 | 48 |
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).
| Bus support | no data | AGP |
| Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Length | 241 mm | 198 mm |
| Width | 2-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 | GDDR5 | GDDR5 |
| Maximum RAM amount | 2 GB | 1 GB |
| Memory bus width | 256 Bit | 256 Bit |
| Memory clock speed | 1400 MHz | no data |
| Memory bandwidth | 179.2 GB/s | 128.0 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 | 2x DVI, 1x HDMI, 1x DisplayPort | 2x DVI, 1x HDMI, 2x mini-DisplayPort |
| Eyefinity | - | + |
| HDMI | + | + |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| CrossFire | - | + |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | DirectX® 11 |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | - |
| CUDA | 3.0 | - |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & cons summary
| Performance score | 3.69 | 5.10 |
| Recency | 22 August 2012 | 21 October 2010 |
| Maximum RAM amount | 2 GB | 1 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 130 Watt | 127 Watt |
GTX 660 OEM has an age advantage of 1 year, a 100% higher maximum VRAM amount, and a 42.9% more advanced lithography process.
HD 6850, on the other hand, has a 38.2% higher aggregate performance score, and 2.4% lower power consumption.
The Radeon HD 6850 is our recommended choice as it beats the GeForce GTX 660 OEM in performance tests.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
