Tesla K20X vs ATI Mobility Radeon HD 3870 X2
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 923 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.47 | no data |
| Architecture | TeraScale (2005−2013) | Kepler (2012−2018) |
| GPU code name | M88 | GK110 |
| Market segment | Laptop | Workstation |
| Release date | 1 September 2008 (17 years ago) | 12 November 2012 (13 years ago) |
| Launch price (MSRP) | no data | $7,699 |
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 | 320 ×2 | 2688 |
| Core clock speed | 660 MHz | 732 MHz |
| Number of transistors | 666 million | 7,080 million |
| Manufacturing process technology | 55 nm | 28 nm |
| Power consumption (TDP) | 110 Watt | 235 Watt |
| Texture fill rate | 10.56 ×2 | 164.0 |
| Floating-point processing power | 0.4224 TFLOPS ×2 | 3.935 TFLOPS |
| ROPs | 16 ×2 | 48 |
| TMUs | 16 ×2 | 224 |
| L1 Cache | no data | 224 KB |
| L2 Cache | 256 KB | 1536 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 | 267 mm |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | 1x 6-pin + 1x 8-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 ×2 | 6 GB |
| Memory bus width | 256 Bit ×2 | 384 Bit |
| Memory clock speed | 850 MHz | 1300 MHz |
| Memory bandwidth | 54.4 GB/s ×2 | 249.6 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 | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 10.1 (10_1) | 12 (11_0) |
| Shader Model | 4.1 | 5.1 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | N/A | 1.2 |
| Vulkan | N/A | 1.1.126 |
| CUDA | - | 3.5 |
Pros & cons summary
| Recency | 1 September 2008 | 12 November 2012 |
| Maximum RAM amount | 512 MB | 6 GB |
| Chip lithography | 55 nm | 28 nm |
| Power consumption (TDP) | 110 Watt | 235 Watt |
ATI Mobility HD 3870 X2 has 113.6% lower power consumption.
Tesla K20X, on the other hand, has an age advantage of 4 years, a 1100% higher maximum VRAM amount, and a 96.4% more advanced lithography process.
We couldn't decide between Mobility Radeon HD 3870 X2 and Tesla K20X. We've got no test results to judge.
Be aware that Mobility Radeon HD 3870 X2 is a notebook graphics card while Tesla K20X is a workstation one.
Other comparisons
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