Radeon RX 6600M vs HD 7490M
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | not rated | 138 |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Terascale 2 (2009−2015) | RDNA 2 (2020−2023) |
| GPU code name | Seymour XTX | R21M-E65-70 |
| Market segment | Laptop | Laptop |
| Release date | 7 December 2011 (12 years ago) | 1 September 2020 (4 years ago) |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 160 | 1792 |
| Core clock speed | 800 MHz | 2068 MHz |
| Boost clock speed | no data | 2177 MHz |
| Number of transistors | 370 million | 11,060 million |
| Manufacturing process technology | 40 nm | 7 nm |
| Power consumption (TDP) | 9 Watt | 100 Watt (50 - 100 Watt TGP) |
| Texture fill rate | 6.400 | 235.8 |
| Floating-point performance | 0.256 gflops | 7.544 gflops |
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 | medium sized |
| Interface | PCIe 2.0 x16 | PCIe 4.0 x8 |
| 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 | GDDR6 |
| Maximum RAM amount | 512 MB | 8 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 3800 MHz | 14000 MHz |
| Memory bandwidth | 30.4 GB/s | 256.0 GB/s |
| Shared memory | - | - |
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 graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.0 | 6.5 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | N/A | 1.2 |
Pros & cons summary
| Recency | 7 December 2011 | 1 September 2020 |
| Maximum RAM amount | 512 MB | 8 GB |
| Chip lithography | 40 nm | 7 nm |
| Power consumption (TDP) | 9 Watt | 100 Watt |
HD 7490M has 1011.1% lower power consumption.
RX 6600M, on the other hand, has an age advantage of 8 years, a 1500% higher maximum VRAM amount, and a 471.4% more advanced lithography process.
We couldn't decide between Radeon HD 7490M and Radeon RX 6600M. 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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