GeForce GT 640M Mac Edition vs Radeon R9 285
Aggregate performance score
We've compared Radeon R9 285 with GeForce GT 640M Mac Edition, including specs and performance data.
R9 285 outperforms GT 640M Mac Edition by a whopping 1565% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 313 | 1092 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 8.59 | no data |
| Power efficiency | 6.35 | 2.27 |
| Architecture | GCN 3.0 (2014−2019) | Kepler (2012−2018) |
| GPU code name | Tonga | GK107 |
| Market segment | Desktop | Laptop |
| Release date | 2 September 2014 (10 years ago) | 3 February 2013 (11 years ago) |
| Launch price (MSRP) | $249 | no data |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 | 1792 | 384 |
| Core clock speed | 918 MHz | 745 MHz |
| Number of transistors | 5,000 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 190 Watt | 32 Watt |
| Texture fill rate | 102.8 | 23.84 |
| Floating-point processing power | 3.29 TFLOPS | 0.5722 TFLOPS |
| ROPs | 32 | 8 |
| TMUs | 112 | 32 |
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 3.0 x16 | PCIe 3.0 x16 |
| Length | 221 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 2x 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 | GDDR5 | GDDR5 |
| Maximum RAM amount | 2 GB | 512 MB |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 1375 MHz | 1250 MHz |
| Memory bandwidth | 176.0 GB/s | 40 GB/s |
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 | 2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2 | No outputs |
| HDMI | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 12 (11_0) |
| Shader Model | 6.5 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 1.2 |
| Vulkan | 1.2.170 | 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 | 17.32 | 1.04 |
| Recency | 2 September 2014 | 3 February 2013 |
| Maximum RAM amount | 2 GB | 512 MB |
| Power consumption (TDP) | 190 Watt | 32 Watt |
R9 285 has a 1565.4% higher aggregate performance score, an age advantage of 1 year, and a 300% higher maximum VRAM amount.
GT 640M Mac Edition, on the other hand, has 493.8% lower power consumption.
The Radeon R9 285 is our recommended choice as it beats the GeForce GT 640M Mac Edition in performance tests.
Be aware that Radeon R9 285 is a desktop card while GeForce GT 640M Mac Edition is a notebook one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
