Radeon R9 270 1024SP vs GeForce 7900 GT
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1252 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 0.99 | no data |
| Architecture | Curie (2003−2013) | GCN 1.0 (2012−2020) |
| GPU code name | G71 | Pitcairn |
| Market segment | Desktop | Desktop |
| Release date | 9 March 2006 (19 years ago) | 13 March 2015 (10 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 | no data | 1024 |
| Core clock speed | 450 MHz | 900 MHz |
| Boost clock speed | no data | 925 MHz |
| Number of transistors | 278 million | 2,800 million |
| Manufacturing process technology | 90 nm | 28 nm |
| Power consumption (TDP) | 48 Watt | 150 Watt |
| Texture fill rate | 10.80 | 59.20 |
| Floating-point processing power | no data | 1.894 TFLOPS |
| ROPs | 16 | 32 |
| TMUs | 24 | 64 |
| L1 Cache | no data | 256 KB |
| L2 Cache | no data | 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).
| Interface | PCIe 1.0 x16 | PCIe 3.0 x16 |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | 1x 6-pin | 1x 6-pin |
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 | GDDR3 | GDDR5 |
| Maximum RAM amount | 256 MB | 2 GB |
| Memory bus width | 256 Bit | 256 Bit |
| Memory clock speed | 660 MHz | 1200 MHz |
| Memory bandwidth | 42.24 GB/s | 153.6 GB/s |
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 S-Video | 2x DVI, 1x HDMI, 1x DisplayPort |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 9.0c (9_3) | 12 (11_1) |
| Shader Model | 3.0 | 5.1 |
| OpenGL | 2.1 | 4.6 |
| OpenCL | N/A | 1.2 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 9 March 2006 | 13 March 2015 |
| Maximum RAM amount | 256 MB | 2 GB |
| Chip lithography | 90 nm | 28 nm |
| Power consumption (TDP) | 48 Watt | 150 Watt |
7900 GT has 212.5% lower power consumption.
R9 270 1024SP, on the other hand, has an age advantage of 9 years, a 700% higher maximum VRAM amount, and a 221.4% more advanced lithography process.
We couldn't decide between GeForce 7900 GT and Radeon R9 270 1024SP. We've got no test results to judge.
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