GeForce GT 640M Mac Edition vs Radeon HD 6450
Aggregate performance score
We've compared Radeon HD 6450 with GeForce GT 640M Mac Edition, including specs and performance data.
GT 640M Mac Edition outperforms HD 6450 by a whopping 104% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1232 | 1096 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.94 | 2.23 |
| Architecture | TeraScale 2 (2009−2015) | Kepler (2012−2018) |
| GPU code name | Caicos | GK107 |
| Market segment | Desktop | Laptop |
| Design | reference | no data |
| Release date | 7 April 2011 (13 years ago) | 3 February 2013 (11 years ago) |
| Launch price (MSRP) | $55 | no data |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 | 160 | 384 |
| Core clock speed | no data | 745 MHz |
| Boost clock speed | 750 MHz | no data |
| Number of transistors | 370 million | 1,270 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Power consumption (TDP) | 30 Watt | 32 Watt |
| Texture fill rate | 5.000 | 23.84 |
| Floating-point processing power | 0.2 TFLOPS | 0.5722 TFLOPS |
| ROPs | 4 | 8 |
| TMUs | 8 | 32 |
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).
| Bus support | PCIe 2.0 x8 | no data |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Length | 168 mm | no data |
| Width | 1-slot | no data |
| Supplementary power connectors | None | 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 | GDDR5 |
| Maximum RAM amount | 1 GB | 512 MB |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 800 MHz | 1250 MHz |
| Memory bandwidth | 25.6 GB/s | 40 GB/s |
| Memory bandwidth | 8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5) | no data |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 1x DVI, 1x HDMI, 1x VGA | No outputs |
| Eyefinity | + | - |
| Number of Eyefinity displays | 4 | no data |
| HDMI | + | - |
| DisplayPort support | + | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| CrossFire | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | DirectX® 11 | 12 (11_0) |
| Shader Model | 5.0 | 5.1 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | - | 1.1.126 |
| CUDA | - | 3.0 |
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 | 0.51 | 1.04 |
| Recency | 7 April 2011 | 3 February 2013 |
| Maximum RAM amount | 1 GB | 512 MB |
| Chip lithography | 40 nm | 28 nm |
| Power consumption (TDP) | 30 Watt | 32 Watt |
HD 6450 has a 100% higher maximum VRAM amount, and 6.7% lower power consumption.
GT 640M Mac Edition, on the other hand, has a 103.9% higher aggregate performance score, an age advantage of 1 year, and a 42.9% more advanced lithography process.
The GeForce GT 640M Mac Edition is our recommended choice as it beats the Radeon HD 6450 in performance tests.
Be aware that Radeon HD 6450 is a desktop card while GeForce GT 640M Mac Edition is a notebook one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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