ATI Radeon HD 4850 X2 vs Tesla K20c
Aggregate performance score
We've compared Tesla K20c with Radeon HD 4850 X2, including specs and performance data.
Tesla K20c outperforms ATI HD 4850 X2 by a whopping 205% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 530 | 828 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.16 | 0.13 |
| Power efficiency | 2.78 | 0.82 |
| Architecture | Kepler (2012−2018) | TeraScale (2005−2013) |
| GPU code name | GK110 | R700 |
| Market segment | Workstation | Desktop |
| Release date | 12 November 2012 (12 years ago) | 7 November 2008 (16 years ago) |
| Launch price (MSRP) | $3,199 | $420 |
Cost-effectiveness evaluation
The higher the performance-to-price ratio, the better. We use the manufacturer's recommended prices for comparison.
Tesla K20c has 23% better value for money than ATI HD 4850 X2.
Performance to price scatter graph
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 | 2496 | 800 ×2 |
| Core clock speed | 706 MHz | 625 MHz |
| Number of transistors | 7,080 million | 956 million |
| Manufacturing process technology | 28 nm | 55 nm |
| Power consumption (TDP) | 225 Watt | 250 Watt |
| Texture fill rate | 146.8 | 25.00 ×2 |
| Floating-point processing power | 3.524 TFLOPS | 1 TFLOPS ×2 |
| ROPs | 40 | 16 ×2 |
| TMUs | 208 | 40 ×2 |
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 2.0 x16 |
| Length | 267 mm | 267 mm |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 1x 6-pin + 1x 8-pin | 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 | GDDR5 | GDDR3 |
| Maximum RAM amount | 5 GB | 512 MB ×2 |
| Memory bus width | 320 Bit | 256 Bit ×2 |
| Memory clock speed | 1300 MHz | 995 MHz |
| Memory bandwidth | 208.0 GB/s | 63.68 GB/s ×2 |
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 | 4x DVI, 1x S-Video |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 10.1 (10_1) |
| Shader Model | 5.1 | 4.1 |
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.1.126 | N/A |
| CUDA | 3.5 | - |
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 | 8.23 | 2.70 |
| Recency | 12 November 2012 | 7 November 2008 |
| Maximum RAM amount | 5 GB | 512 MB |
| Chip lithography | 28 nm | 55 nm |
| Power consumption (TDP) | 225 Watt | 250 Watt |
Tesla K20c has a 204.8% higher aggregate performance score, an age advantage of 4 years, a 900% higher maximum VRAM amount, a 96.4% more advanced lithography process, and 11.1% lower power consumption.
The Tesla K20c is our recommended choice as it beats the Radeon HD 4850 X2 in performance tests.
Be aware that Tesla K20c is a workstation graphics card while Radeon HD 4850 X2 is a desktop one.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
