GeForce GT 640 Rev. 2 vs Radeon R9 M295X Mac Edition
Aggregate performance score
We've compared Radeon R9 M295X Mac Edition with GeForce GT 640 Rev. 2, including specs and performance data.
R9 M295X Mac Edition outperforms 640 Rev. 2 by a whopping 276% 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 | 448 | 801 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.19 |
| Power efficiency | 3.84 | 5.21 |
| Architecture | GCN 3.0 (2014−2019) | Kepler 2.0 (2013−2015) |
| GPU code name | Amethyst | GK208 |
| Market segment | Laptop | Desktop |
| Release date | 23 November 2014 (11 years ago) | 29 May 2013 (13 years ago) |
| Launch price (MSRP) | no data | $89 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
Currently popular graphics cards are shown for comparison.
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 | 2048 | 384 |
| Core clock speed | 850 MHz | 1046 MHz |
| Number of transistors | 5,000 million | 915 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 250 Watt | 49 Watt |
| Texture fill rate | 108.8 | 33.47 |
| Floating-point processing power | 3.482 TFLOPS | 0.8033 TFLOPS |
| ROPs | 32 | 8 |
| TMUs | 128 | 32 |
| L1 Cache | 512 KB | 32 KB |
| L2 Cache | 512 KB | 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 | MXM-B (3.0) | PCIe 2.0 x8 |
| Length | no data | 145 mm |
| Width | no data | 1-slot |
| Supplementary power connectors | no data | 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 | GDDR5 |
| Maximum RAM amount | 4 GB | 1 GB |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 1362 MHz | 1252 MHz |
| Memory bandwidth | 174.3 GB/s | 40.06 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 | No outputs | 1x DVI, 1x HDMI, 1x VGA |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 12 (11_0) |
| Shader Model | 6.3 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 1.2 |
| Vulkan | 1.2.131 | 1.1.126 |
| CUDA | - | 3.5 |
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 | 12.40 | 3.30 |
| Recency | 23 November 2014 | 29 May 2013 |
| Maximum RAM amount | 4 GB | 1 GB |
| Power consumption (TDP) | 250 Watt | 49 Watt |
R9 M295X Mac Edition has a 276% higher aggregate performance score, an age advantage of 1 year, and a 300% higher maximum VRAM amount.
GT 640 Rev. 2, on the other hand, has 410% lower power consumption.
The Radeon R9 M295X Mac Edition is our recommended choice as it beats the GeForce GT 640 Rev. 2 in performance tests.
Be aware that Radeon R9 M295X Mac Edition is a notebook graphics card while GeForce GT 640 Rev. 2 is a desktop one.
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