Radeon RX 6600M vs R9 270 1024SP
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 173 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 25.56 |
| Architecture | GCN 1.0 (2012−2020) | RDNA 2.0 (2020−2025) |
| GPU code name | Pitcairn | Navi 23 |
| Market segment | Desktop | Laptop |
| Release date | 13 March 2015 (10 years ago) | 31 May 2021 (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 | 1024 | 1792 |
| Core clock speed | 900 MHz | 2068 MHz |
| Boost clock speed | 925 MHz | 2416 MHz |
| Number of transistors | 2,800 million | 11,060 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 150 Watt | 100 Watt |
| Texture fill rate | 59.20 | 270.6 |
| Floating-point processing power | 1.894 TFLOPS | 8.659 TFLOPS |
| ROPs | 32 | 64 |
| TMUs | 64 | 112 |
| Ray Tracing Cores | no data | 28 |
| L0 Cache | no data | 448 KB |
| L1 Cache | 256 KB | 512 KB |
| L2 Cache | 512 KB | 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 |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x 6-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 | GDDR5 | GDDR6 |
| Maximum RAM amount | 2 GB | 8 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 1200 MHz | 1750 MHz |
| Memory bandwidth | 153.6 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 | 2x DVI, 1x HDMI, 1x DisplayPort | No outputs |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.5 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.2.131 | 1.3 |
Pros & cons summary
| Recency | 13 March 2015 | 31 May 2021 |
| Maximum RAM amount | 2 GB | 8 GB |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 150 Watt | 100 Watt |
RX 6600M has an age advantage of 6 years, a 300% higher maximum VRAM amount, a 300% more advanced lithography process, and 50% lower power consumption.
We couldn't decide between Radeon R9 270 1024SP and Radeon RX 6600M. We've got no test results to judge.
Be aware that Radeon R9 270 1024SP is a desktop graphics card while Radeon RX 6600M is a notebook one.
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