GeForce 620M vs Radeon HD 6450A
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1180 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.84 | no data |
| Architecture | TeraScale 2 (2009−2015) | Fermi 2.0 (2010−2014) |
| GPU code name | Caicos | GF117 |
| Market segment | Laptop | Laptop |
| Release date | 7 April 2011 (13 years ago) | 22 March 2012 (12 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 | 160 | 96 |
| Core clock speed | 625 MHz | 625 MHz |
| Number of transistors | 370 million | 585 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Power consumption (TDP) | 25 Watt | 15 Watt |
| Texture fill rate | 5.000 | 10.00 |
| Floating-point processing power | 0.2 TFLOPS | 0.24 TFLOPS |
| ROPs | 4 | 8 |
| TMUs | 8 | 16 |
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 | MXM-A (3.0) | PCIe 2.0 x16 |
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 | DDR3 |
| Maximum RAM amount | 512 MB | 1 GB |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 533 MHz | 900 MHz |
| Memory bandwidth | 8.528 GB/s | 14.4 GB/s |
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 | No outputs | No outputs |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 (11_0) |
| Shader Model | 5.0 | 5.1 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | N/A | N/A |
| CUDA | - | 2.1 |
Pros & cons summary
| Recency | 7 April 2011 | 22 March 2012 |
| Maximum RAM amount | 512 MB | 1 GB |
| Chip lithography | 40 nm | 28 nm |
| Power consumption (TDP) | 25 Watt | 15 Watt |
GeForce 620M has an age advantage of 11 months, a 100% higher maximum VRAM amount, a 42.9% more advanced lithography process, and 66.7% lower power consumption.
We couldn't decide between Radeon HD 6450A and GeForce 620M. We've got no test results to judge.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
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