GeForce GT 640M vs ATI Radeon HD 4730
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 932 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 5.13 |
| Architecture | TeraScale (2005−2013) | Kepler (2012−2018) |
| GPU code name | RV770 | GK107 |
| Market segment | Desktop | Laptop |
| Release date | 8 June 2009 (17 years ago) | 22 March 2012 (14 years ago) |
| Launch price (MSRP) | $79 | no data |
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 | 640 | 384 |
| Core clock speed | 750 MHz | Up to 625 MHz |
| Boost clock speed | no data | 645 MHz |
| Number of transistors | 956 million | 1,270 million |
| Manufacturing process technology | 55 nm | 28 nm |
| Power consumption (TDP) | 110 Watt | 32 Watt |
| Texture fill rate | 24.00 | 20.00 |
| Floating-point processing power | 0.96 TFLOPS | 0.48 TFLOPS |
| ROPs | 8 | 16 |
| TMUs | 32 | 32 |
| L1 Cache | 128 KB | 32 KB |
| L2 Cache | 128 KB | 256 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 | no data | medium sized |
| Bus support | no data | PCI Express 2.0, PCI Express 3.0 |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Length | 241 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x 6-pin | no data |
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 | DDR3\GDDR5 |
| Maximum RAM amount | 512 MB | 2 GB |
| Memory bus width | 128 Bit | 128bit |
| Memory clock speed | 900 MHz | 900 MHz |
| Memory bandwidth | 57.6 GB/s | Up to 64.0 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 | 2x DVI, 1x S-Video | No outputs |
| HDMI | - | + |
| HDCP | - | + |
| Maximum VGA resolution | no data | Up to 2048x1536 |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Blu-Ray | - | + |
| Optimus | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 10.1 (10_1) | 12 API |
| Shader Model | 4.1 | 5.1 |
| OpenGL | 3.3 | 4.5 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | N/A | 1.1.126 |
| CUDA | - | + |
Pros & cons summary
| Recency | 8 June 2009 | 22 March 2012 |
| Maximum RAM amount | 512 MB | 2 GB |
| Chip lithography | 55 nm | 28 nm |
| Power consumption (TDP) | 110 Watt | 32 Watt |
GT 640M has an age advantage of 2 years, a 300% higher maximum VRAM amount, a 96% more advanced lithography process, and 244% lower power consumption.
We couldn't decide between Radeon HD 4730 and GeForce GT 640M. We've got no test results to judge.
Be aware that Radeon HD 4730 is a desktop graphics card while GeForce GT 640M is a notebook one.
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