Radeon 820M vs GeForce GTX 660M Mac Edition

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Aggregate performance score

We've compared GeForce GTX 660M Mac Edition and Radeon 820M, covering specs and all relevant benchmarks.

GTX 660M Mac Edition
2013
512 MB GDDR5, 50 Watt
1.47

820M outperforms 660M Mac Edition by a whopping 256% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking1025667
Place by popularitynot in top-100not in top-100
Power efficiency2.26no data
ArchitectureKepler (2012−2018)RDNA 3+ (2024)
GPU code nameGK107Krackan Point
Market segmentLaptopLaptop
Release date1 April 2013 (12 years ago)2 June 2024 (1 year 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 cores384128
Core clock speed950 MHzno data
Boost clock speedno data2900 MHz
Number of transistors1,270 millionno data
Manufacturing process technology28 nm4 nm
Power consumption (TDP)50 Wattno data
Texture fill rate30.40no data
Floating-point processing power0.7296 TFLOPSno data
ROPs16no data
TMUs32no data
L1 Cache32 KBno data
L2 Cache256 KBno data

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 sizeno datamedium sized
InterfaceMXM-B (3.0)no data
Supplementary power connectorsNoneno 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 typeGDDR5no data
Maximum RAM amount512 MBno data
Memory bus width128 Bitno data
Memory clock speed1250 MHz7500 MHz
Memory bandwidth80 GB/sno data
Shared memory-+
Resizable BAR-+

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 ConnectorsNo outputsno data

API and SDK support

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_0)no data
Shader Model5.1no data
OpenGL4.6no data
OpenCL1.2no data
Vulkan1.1.126-
CUDA3.0-

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 HD2−3
−400%
10
+400%

FPS performance in popular games

Full HD
Low

Counter-Strike 2 24−27
+0%
24−27
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%
Hogwarts Legacy 10−12
+0%
10−12
+0%

Full HD
Medium

Battlefield 5 21−24
+0%
21−24
+0%
Counter-Strike 2 24−27
+0%
24−27
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%
Far Cry 5 16−18
+0%
16−18
+0%
Fortnite 30−35
+0%
30−35
+0%
Forza Horizon 4 24−27
+0%
24−27
+0%
Forza Horizon 5 14−16
+0%
14−16
+0%
Hogwarts Legacy 10−12
+0%
10−12
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 20−22
+0%
20−22
+0%
Valorant 60−65
+0%
60−65
+0%

Full HD
High

Battlefield 5 21−24
+0%
21−24
+0%
Counter-Strike 2 24−27
+0%
24−27
+0%
Counter-Strike: Global Offensive 90−95
+0%
90−95
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%
Far Cry 5 16−18
+0%
16−18
+0%
Fortnite 30−35
+0%
30−35
+0%
Forza Horizon 4 24−27
+0%
24−27
+0%
Forza Horizon 5 14−16
+0%
14−16
+0%
Grand Theft Auto V 16
+0%
16
+0%
Hogwarts Legacy 10−12
+0%
10−12
+0%
Metro Exodus 10−11
+0%
10−11
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 20−22
+0%
20−22
+0%
The Witcher 3: Wild Hunt 14−16
+0%
14−16
+0%
Valorant 60−65
+0%
60−65
+0%

Full HD
Ultra

Battlefield 5 21−24
+0%
21−24
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%
Far Cry 5 16−18
+0%
16−18
+0%
Forza Horizon 4 24−27
+0%
24−27
+0%
Hogwarts Legacy 10−12
+0%
10−12
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 20−22
+0%
20−22
+0%
The Witcher 3: Wild Hunt 14−16
+0%
14−16
+0%

Full HD
Epic

Fortnite 30−35
+0%
30−35
+0%

1440p
High

Counter-Strike 2 10−11
+0%
10−11
+0%
Counter-Strike: Global Offensive 40−45
+0%
40−45
+0%
Grand Theft Auto V 4−5
+0%
4−5
+0%
Metro Exodus 4−5
+0%
4−5
+0%
Valorant 55−60
+0%
55−60
+0%

1440p
Ultra

Battlefield 5 6−7
+0%
6−7
+0%
Cyberpunk 2077 4−5
+0%
4−5
+0%
Far Cry 5 10−11
+0%
10−11
+0%
Forza Horizon 4 12−14
+0%
12−14
+0%
Hogwarts Legacy 6−7
+0%
6−7
+0%
The Witcher 3: Wild Hunt 7−8
+0%
7−8
+0%

1440p
Epic

Fortnite 10−11
+0%
10−11
+0%

4K
High

Grand Theft Auto V 16−18
+0%
16−18
+0%
The Witcher 3: Wild Hunt 2−3
+0%
2−3
+0%
Valorant 24−27
+0%
24−27
+0%

4K
Ultra

Battlefield 5 3−4
+0%
3−4
+0%
Cyberpunk 2077 1−2
+0%
1−2
+0%
Far Cry 5 4−5
+0%
4−5
+0%
Forza Horizon 4 8−9
+0%
8−9
+0%
Hogwarts Legacy 1−2
+0%
1−2
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 5−6
+0%
5−6
+0%

4K
Epic

Fortnite 5−6
+0%
5−6
+0%

This is how GTX 660M Mac Edition and Radeon 820M compete in popular games:

  • Radeon 820M is 400% faster in 1080p

All in all, in popular games:

  • there's a draw in 57 tests (100%)

Pros & cons summary


Performance score 1.47 5.23
Recency 1 April 2013 2 June 2024
Chip lithography 28 nm 4 nm

Radeon 820M has a 255.8% higher aggregate performance score, an age advantage of 11 years, and a 600% more advanced lithography process.

The Radeon 820M is our recommended choice as it beats the GeForce GTX 660M Mac Edition in performance tests.

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NVIDIA GeForce GTX 660M Mac Edition
GeForce GTX 660M Mac Edition
AMD Radeon 820M
Radeon 820M

Other comparisons

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Community ratings

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