Radeon RX 6600S vs Instinct MI8
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 199 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 29.96 |
| Architecture | GCN 3.0 (2014−2019) | RDNA 2.0 (2020−2025) |
| GPU code name | Fiji | Navi 23 |
| Market segment | Workstation | Laptop |
| Release date | 12 December 2016 (9 years ago) | 4 January 2022 (4 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 | 4096 | 1792 |
| Core clock speed | 1000 MHz | 1700 MHz |
| Boost clock speed | no data | 2000 MHz |
| Number of transistors | 8,900 million | 11,060 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 175 Watt | 80 Watt |
| Texture fill rate | 256.0 | 224.0 |
| Floating-point processing power | 8.192 TFLOPS | 7.168 TFLOPS |
| ROPs | 64 | 64 |
| TMUs | 256 | 112 |
| Ray Tracing Cores | no data | 28 |
| L0 Cache | no data | 448 KB |
| L1 Cache | 1 MB | 512 KB |
| L2 Cache | 2 MB | 2 MB |
| L3 Cache | no data | 32 MB |
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 3.0 x16 | PCIe 4.0 x8 |
| Length | 152 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x 8-pin | 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 | HBM | GDDR6 |
| Maximum RAM amount | 4 GB | 4 GB |
| Memory bus width | 4096 Bit | 128 Bit |
| Memory clock speed | 500 MHz | 1750 MHz |
| Memory bandwidth | 512.0 GB/s | 224.0 GB/s |
| Shared memory | - | - |
| Resizable BAR | - | + |
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 | No outputs | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 12 Ultimate (12_2) |
| Shader Model | 6.3 | 6.5 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.1 |
| Vulkan | 1.2.131 | 1.3 |
Pros & cons summary
| Recency | 12 December 2016 | 4 January 2022 |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 175 Watt | 80 Watt |
RX 6600S has an age advantage of 5 years, a 300% more advanced lithography process, and 119% lower power consumption.
We couldn't decide between Radeon Instinct MI8 and Radeon RX 6600S. We've got no test results to judge.
Be aware that Radeon Instinct MI8 is a workstation graphics card while Radeon RX 6600S is a notebook one.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
