ATI Radeon HD 5870 Eyefinity 6 vs GeForce GTX 645 OEM
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) | TeraScale 2 (2009−2015) |
| GPU code name | GK106 | Cypress |
| Market segment | Desktop | Desktop |
| Release date | 22 April 2013 (12 years ago) | 11 March 2010 (15 years ago) |
| Launch price (MSRP) | no data | $479 |
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 | 576 | 1600 |
| Core clock speed | 824 MHz | 850 MHz |
| Number of transistors | 2,540 million | 2,154 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 65 Watt | 228 Watt |
| Texture fill rate | 39.55 | 68.00 |
| Floating-point processing power | 0.9492 TFLOPS | 2.72 TFLOPS |
| ROPs | 16 | 32 |
| TMUs | 48 | 80 |
| L1 Cache | 48 KB | 160 KB |
| L2 Cache | 256 KB | 512 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 | PCIe 2.0 x16 |
| Length | 147 mm | 279 mm |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | None | 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 | GDDR5 |
| Maximum RAM amount | 1 GB | 2 GB |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 1000 MHz | 1200 MHz |
| Memory bandwidth | 64 GB/s | 153.6 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 | 1x DVI, 1x HDMI, 1x DisplayPort | 6x mini-DisplayPort |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 11.2 (11_0) |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | N/A |
| CUDA | 3.0 | - |
Pros & cons summary
| Recency | 22 April 2013 | 11 March 2010 |
| Maximum RAM amount | 1 GB | 2 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 65 Watt | 228 Watt |
GTX 645 OEM has an age advantage of 3 years, a 42.9% more advanced lithography process, and 250.8% lower power consumption.
ATI HD 5870 Eyefinity 6, on the other hand, has a 100% higher maximum VRAM amount.
We couldn't decide between GeForce GTX 645 OEM and Radeon HD 5870 Eyefinity 6. We've got no test results to judge.
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