Radeon HD 7970 GHz Edition vs GeForce GT 640M
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 905 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 5.24 | no data |
| Architecture | Kepler (2012−2018) | GCN 1.0 (2012−2020) |
| GPU code name | GK107 | Tahiti |
| Market segment | Laptop | Desktop |
| Design | no data | reference |
| Release date | 22 March 2012 (13 years ago) | 22 June 2012 (13 years ago) |
| Launch price (MSRP) | no data | $499 |
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 | 384 | 2048 |
| Core clock speed | Up to 625 MHz | no data |
| Boost clock speed | 645 MHz | 1050 MHz |
| Number of transistors | 1,270 million | 4,313 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 32 Watt | 250 Watt |
| Texture fill rate | 20.00 | 134.4 |
| Floating-point processing power | 0.48 TFLOPS | 4.301 TFLOPS |
| ROPs | 16 | 32 |
| TMUs | 32 | 128 |
| L1 Cache | 32 KB | 512 KB |
| L2 Cache | 256 KB | 768 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 | medium sized | no data |
| Bus support | PCI Express 2.0, PCI Express 3.0 | PCIe 2.1 x16 |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Length | no data | 274 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 | DDR3\GDDR5 | GDDR5 |
| Maximum RAM amount | 2 GB | 3 GB |
| Memory bus width | 128bit | 384 Bit |
| Memory clock speed | 900 MHz | 1500 MHz |
| Memory bandwidth | Up to 64.0 GB/s | 288 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 | 1x DVI, 1x HDMI, 2x mini-DisplayPort |
| Eyefinity | - | + |
| HDMI | + | + |
| HDCP | + | - |
| Maximum VGA resolution | Up to 2048x1536 | no data |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| CrossFire | - | + |
| FreeSync | - | + |
| 3D Blu-Ray | + | - |
| Optimus | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 API | DirectX® 11 |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | 1.1.126 | - |
| CUDA | + | - |
Pros & cons summary
| Recency | 22 March 2012 | 22 June 2012 |
| Maximum RAM amount | 2 GB | 3 GB |
| Power consumption (TDP) | 32 Watt | 250 Watt |
GT 640M has 681.3% lower power consumption.
HD 7970 GHz Edition, on the other hand, has an age advantage of 3 months, and a 50% higher maximum VRAM amount.
We couldn't decide between GeForce GT 640M and Radeon HD 7970 GHz Edition. We've got no test results to judge.
Be aware that GeForce GT 640M is a notebook graphics card while Radeon HD 7970 GHz Edition is a desktop one.
Other comparisons
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