Radeon RX 640 vs HD 7720 OEM
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 665 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 7.97 |
| Architecture | TeraScale 2 (2009−2015) | GCN 4.0 (2016−2020) |
| GPU code name | Barts | Polaris 23 |
| Market segment | Desktop | Laptop |
| Release date | 15 March 2013 (12 years ago) | 13 May 2019 (6 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 | 800 | 640 |
| Core clock speed | 840 MHz | 1082 MHz |
| Boost clock speed | no data | 1218 MHz |
| Number of transistors | 1,700 million | 2,200 million |
| Manufacturing process technology | 40 nm | 14 nm |
| Power consumption (TDP) | 150 Watt | 50 Watt |
| Texture fill rate | 33.60 | 48.72 |
| Floating-point processing power | 1.344 TFLOPS | 1.559 TFLOPS |
| ROPs | 32 | 16 |
| TMUs | 40 | 40 |
| L1 Cache | 160 KB | 160 KB |
| L2 Cache | 512 KB | 512 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 | large |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x8 |
| Length | 198 mm | no data |
| Width | 2-slot | no data |
| 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 | GDDR5 |
| Maximum RAM amount | 1 GB | 2 GB |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 1050 MHz | 1500 MHz |
| Memory bandwidth | 134.4 GB/s | 48 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 HDMI, 1x DisplayPort | No outputs |
| HDMI | + | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| FreeSync | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 (12_0) |
| Shader Model | 5.0 | 6.4 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 15 March 2013 | 13 May 2019 |
| Maximum RAM amount | 1 GB | 2 GB |
| Chip lithography | 40 nm | 14 nm |
| Power consumption (TDP) | 150 Watt | 50 Watt |
RX 640 has an age advantage of 6 years, a 100% higher maximum VRAM amount, a 185.7% more advanced lithography process, and 200% lower power consumption.
We couldn't decide between Radeon HD 7720 OEM and Radeon RX 640. We've got no test results to judge.
Be aware that Radeon HD 7720 OEM is a desktop graphics card while Radeon RX 640 is a notebook one.
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