GeForce GT 640M Mac Edition vs 7900 GT
Aggregate performance score
We've compared GeForce 7900 GT with GeForce GT 640M Mac Edition, including specs and performance data.
640M Mac Edition outperforms 7900 GT by an impressive 53% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1278 | 1189 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.00 | 2.30 |
| Architecture | Curie (2003−2013) | Kepler (2012−2018) |
| GPU code name | G71 | GK107 |
| Market segment | Desktop | Laptop |
| Release date | 9 March 2006 (20 years ago) | 3 February 2013 (13 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. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | no data | 384 |
| Core clock speed | 450 MHz | 745 MHz |
| Number of transistors | 278 million | 1,270 million |
| Manufacturing process technology | 90 nm | 28 nm |
| Power consumption (TDP) | 48 Watt | 32 Watt |
| Texture fill rate | 10.80 | 23.84 |
| Floating-point processing power | no data | 0.5722 TFLOPS |
| ROPs | 16 | 8 |
| TMUs | 24 | 32 |
| L1 Cache | no data | 32 KB |
| L2 Cache | no data | 128 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 | no data |
| Supplementary power connectors | 1x 6-pin | no data |
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 | 512 MB |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 660 MHz | 1250 MHz |
| Memory bandwidth | 42.24 GB/s | 40 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 | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 9.0c (9_3) | 12 (11_0) |
| Shader Model | 3.0 | 5.1 |
| OpenGL | 2.1 | 4.6 |
| OpenCL | N/A | 1.2 |
| Vulkan | N/A | 1.1.126 |
| CUDA | - | 3.0 |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & cons summary
| Performance score | 0.62 | 0.95 |
| Recency | 9 March 2006 | 3 February 2013 |
| Maximum RAM amount | 256 MB | 512 MB |
| Chip lithography | 90 nm | 28 nm |
| Power consumption (TDP) | 48 Watt | 32 Watt |
GT 640M Mac Edition has a 53% higher aggregate performance score, an age advantage of 6 years, a 100% higher maximum VRAM amount, a 221% more advanced lithography process, and 50% lower power consumption.
The GeForce GT 640M Mac Edition is our recommended choice as it beats the GeForce 7900 GT in performance tests.
Be aware that GeForce 7900 GT is a desktop graphics card while GeForce GT 640M Mac Edition is a notebook one.
Other comparisons
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