Tesla C870 vs Radeon HD 6790
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 771 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.73 | no data |
| Power efficiency | 1.96 | no data |
| Architecture | TeraScale 2 (2009−2015) | Tesla (2006−2010) |
| GPU code name | Barts | G80 |
| Market segment | Desktop | Workstation |
| Release date | 4 April 2011 (15 years ago) | 2 May 2007 (19 years ago) |
| Launch price (MSRP) | $149 | $1,499 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
Currently popular graphics cards are shown for comparison.
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 | 800 | 128 |
| Core clock speed | 840 MHz | 600 MHz |
| Number of transistors | 1,700 million | 681 million |
| Manufacturing process technology | 40 nm | 90 nm |
| Power consumption (TDP) | 150 Watt | 171 Watt |
| Texture fill rate | 33.60 | 38.40 |
| Floating-point processing power | 1.344 TFLOPS | 0.3456 TFLOPS |
| ROPs | 16 | 24 |
| TMUs | 40 | 32 |
| L1 Cache | 160 KB | no data |
| L2 Cache | 512 KB | 96 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 1.0 x16 |
| Length | 198 mm | no data |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 2x 6-pin | 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 | GDDR3 |
| Maximum RAM amount | 1 GB | 1536 MB |
| Memory bus width | 256 Bit | 384 Bit |
| Memory clock speed | 1050 MHz | 800 MHz |
| Memory bandwidth | 134.4 GB/s | 76.8 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 | No outputs |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 11.1 (10_0) |
| Shader Model | 5.0 | 4.0 |
| OpenGL | 4.4 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | N/A | N/A |
| CUDA | - | + |
Pros & cons summary
| Recency | 4 April 2011 | 2 May 2007 |
| Maximum RAM amount | 1 GB | 1536 MB |
| Chip lithography | 40 nm | 90 nm |
| Power consumption (TDP) | 150 Watt | 171 Watt |
HD 6790 has an age advantage of 3 years, a 125% more advanced lithography process, and 14% lower power consumption.
Tesla C870, on the other hand, has a 50% higher maximum VRAM amount.
We couldn't decide between Radeon HD 6790 and Tesla C870. We've got no test results to judge.
Be aware that Radeon HD 6790 is a desktop graphics card while Tesla C870 is a workstation one.
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