GeForce GTX 660M Mac Edition vs Radeon R6 M255DX
Aggregate performance score
We've compared Radeon R6 M255DX and GeForce GTX 660M Mac Edition, covering specs and all relevant benchmarks.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 977 | 975 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 2.16 |
| Architecture | GCN 1.0 (2011−2020) | Kepler (2012−2018) |
| GPU code name | Jet | GK107 |
| Market segment | Laptop | Laptop |
| Release date | 7 January 2014 (11 years ago) | 1 April 2013 (11 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 | 320 | 384 |
| Core clock speed | 780 MHz | 950 MHz |
| Boost clock speed | 855 MHz | no data |
| Number of transistors | 690 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | no data | 50 Watt |
| Texture fill rate | 17.10 | 30.40 |
| Floating-point processing power | 0.5472 TFLOPS | 0.7296 TFLOPS |
| ROPs | 8 | 16 |
| TMUs | 20 | 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).
| Laptop size | medium sized | no data |
| Interface | IGP | MXM-B (3.0) |
| 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 | System Shared | GDDR5 |
| Maximum RAM amount | System Shared | 512 MB |
| Memory bus width | System Shared | 128 Bit |
| Memory clock speed | System Shared | 1250 MHz |
| Memory bandwidth | no data | 80 GB/s |
| Shared memory | + | - |
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 | No outputs | No outputs |
| Eyefinity | + | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| AppAcceleration | + | - |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2.131 | 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.
Average FPS across all PC games
Here are the average frames per second in a large set of popular games across different resolutions:
| Full HD | 11
+10%
| 10−12
−10%
|
FPS performance in popular games
Full HD
Low Preset
| Atomic Heart | 4−5
+0%
|
4−5
+0%
|
| Counter-Strike 2 | 8−9
+0%
|
8−9
+0%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
Full HD
Medium Preset
| Atomic Heart | 4−5
+0%
|
4−5
+0%
|
| Battlefield 5 | 2−3
+0%
|
2−3
+0%
|
| Counter-Strike 2 | 8−9
+0%
|
8−9
+0%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
| Far Cry 5 | 0−1 | 0−1 |
| Fortnite | 5−6
+0%
|
5−6
+0%
|
| Forza Horizon 4 | 8−9
+0%
|
8−9
+0%
|
| Forza Horizon 5 | 1−2
+0%
|
1−2
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 10−11
+0%
|
10−11
+0%
|
| Valorant | 35−40
+0%
|
35−40
+0%
|
Full HD
High Preset
| Atomic Heart | 4−5
+0%
|
4−5
+0%
|
| Battlefield 5 | 2−3
+0%
|
2−3
+0%
|
| Counter-Strike 2 | 8−9
+0%
|
8−9
+0%
|
| Counter-Strike: Global Offensive | 30−35
+6.7%
|
30−33
−6.7%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
| Dota 2 | 18−20
+0%
|
18−20
+0%
|
| Far Cry 5 | 0−1 | 0−1 |
| Fortnite | 5−6
+0%
|
5−6
+0%
|
| Forza Horizon 4 | 8−9
+0%
|
8−9
+0%
|
| Forza Horizon 5 | 1−2
+0%
|
1−2
+0%
|
| Grand Theft Auto V | 2−3
+0%
|
2−3
+0%
|
| Metro Exodus | 2−3
+0%
|
2−3
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 10−11
+0%
|
10−11
+0%
|
| The Witcher 3: Wild Hunt | 6−7
+0%
|
6−7
+0%
|
| Valorant | 35−40
+0%
|
35−40
+0%
|
Full HD
Ultra Preset
| Battlefield 5 | 2−3
+0%
|
2−3
+0%
|
| Counter-Strike 2 | 8−9
+0%
|
8−9
+0%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
| Dota 2 | 18−20
+0%
|
18−20
+0%
|
| Far Cry 5 | 0−1 | 0−1 |
| Forza Horizon 4 | 8−9
+0%
|
8−9
+0%
|
| Forza Horizon 5 | 1−2
+0%
|
1−2
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 10−11
+0%
|
10−11
+0%
|
| The Witcher 3: Wild Hunt | 6−7
+0%
|
6−7
+0%
|
| Valorant | 35−40
+0%
|
35−40
+0%
|
Full HD
Epic Preset
| Fortnite | 5−6
+0%
|
5−6
+0%
|
1440p
High Preset
| Counter-Strike 2 | 2−3
+0%
|
2−3
+0%
|
| Counter-Strike: Global Offensive | 9−10
+0%
|
9−10
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 10−11
+0%
|
10−11
+0%
|
| Valorant | 8−9
+0%
|
8−9
+0%
|
1440p
Ultra Preset
| Cyberpunk 2077 | 1−2
+0%
|
1−2
+0%
|
| Far Cry 5 | 2−3
+0%
|
2−3
+0%
|
| Forza Horizon 4 | 3−4
+0%
|
3−4
+0%
|
| Forza Horizon 5 | 0−1 | 0−1 |
| The Witcher 3: Wild Hunt | 3−4
+0%
|
3−4
+0%
|
1440p
Epic Preset
| Fortnite | 2−3
+0%
|
2−3
+0%
|
4K
High Preset
| Atomic Heart | 1−2
+0%
|
1−2
+0%
|
| Grand Theft Auto V | 14−16
+7.1%
|
14−16
−7.1%
|
| Valorant | 8−9
+0%
|
8−9
+0%
|
4K
Ultra Preset
| Cyberpunk 2077 | 0−1 | 0−1 |
| Dota 2 | 2−3
+0%
|
2−3
+0%
|
| Far Cry 5 | 2−3
+0%
|
2−3
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 3−4
+0%
|
3−4
+0%
|
4K
Epic Preset
| Fortnite | 3−4
+0%
|
3−4
+0%
|
This is how R6 M255DX and GTX 660M Mac Edition compete in popular games:
- R6 M255DX is 10% faster in 1080p
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
