Radeon 620 vs ATI HD 4520
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 850 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 3.23 |
| Architecture | TeraScale (2005−2013) | GCN 3.0 (2014−2019) |
| GPU code name | RV710 | Polaris 24 |
| Market segment | Desktop | Laptop |
| Release date | 2 December 2009 (14 years ago) | 13 May 2019 (5 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 | 80 | 384 |
| Core clock speed | 600 MHz | 730 MHz |
| Boost clock speed | no data | 1024 MHz |
| Number of transistors | 242 million | 1,550 million |
| Manufacturing process technology | 55 nm | 28 nm |
| Power consumption (TDP) | 25 Watt | 50 Watt |
| Texture fill rate | 4.800 | 24.58 |
| Floating-point processing power | 0.096 TFLOPS | 0.7864 TFLOPS |
| ROPs | 4 | 8 |
| TMUs | 8 | 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 2.0 x16 | PCIe 3.0 x8 |
| Length | 168 mm | no data |
| Width | 1-slot | no data |
| Supplementary power connectors | None | 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 | DDR2 | DDR3 |
| Maximum RAM amount | 512 MB | 2 GB |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 400 MHz | 900 MHz |
| Memory bandwidth | 6.4 GB/s | 14.4 GB/s |
| Shared memory | 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 DisplayPort | No outputs |
| HDMI | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 10.1 (10_1) | 12 (12_0) |
| Shader Model | 4.1 | 6.3 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 2.0 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 2 December 2009 | 13 May 2019 |
| Maximum RAM amount | 512 MB | 2 GB |
| Chip lithography | 55 nm | 28 nm |
| Power consumption (TDP) | 25 Watt | 50 Watt |
ATI HD 4520 has 100% lower power consumption.
Radeon 620, on the other hand, has an age advantage of 9 years, a 300% higher maximum VRAM amount, and a 96.4% more advanced lithography process.
We couldn't decide between Radeon HD 4520 and Radeon 620. We've got no test results to judge.
Be aware that Radeon HD 4520 is a desktop card while Radeon 620 is a notebook one.
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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