Radeon R7 340 OEM vs GeForce GT 640M Mac Edition
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1150 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 2.29 | no data |
| Architecture | Kepler (2012−2018) | GCN 1.0 (2012−2020) |
| GPU code name | GK107 | Oland |
| Market segment | Laptop | Desktop |
| Release date | 3 February 2013 (12 years ago) | 5 May 2015 (10 years ago) |
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 | 384 |
| Core clock speed | 745 MHz | 730 MHz |
| Boost clock speed | no data | 780 MHz |
| Number of transistors | 1,270 million | 950 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 32 Watt | 50 Watt |
| Texture fill rate | 23.84 | 18.72 |
| Floating-point processing power | 0.5722 TFLOPS | 0.599 TFLOPS |
| ROPs | 8 | 8 |
| TMUs | 32 | 24 |
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 3.0 x8 |
| Width | no data | 1-slot |
| Supplementary power connectors | no data | None |
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 |
| Maximum RAM amount | 512 MB | 2 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 1250 MHz | 900 MHz |
| Memory bandwidth | 40 GB/s | 28.8 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 | No outputs | 1x DVI, 1x HDMI, 1x VGA |
| HDMI | - | + |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (11_1) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.2.131 |
| CUDA | 3.0 | - |
Pros & cons summary
| Recency | 3 February 2013 | 5 May 2015 |
| Maximum RAM amount | 512 MB | 2 GB |
| Power consumption (TDP) | 32 Watt | 50 Watt |
GT 640M Mac Edition has 56.3% lower power consumption.
R7 340 OEM, on the other hand, has an age advantage of 2 years, and a 300% higher maximum VRAM amount.
We couldn't decide between GeForce GT 640M Mac Edition and Radeon R7 340 OEM. We've got no test results to judge.
Be aware that GeForce GT 640M Mac Edition is a notebook graphics card while Radeon R7 340 OEM is a desktop one.
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