Radeon 660M vs RX 6900

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Aggregate performance score

We've compared Radeon RX 6900 with Radeon 660M, including specs and performance data.

RX 6900
2020
16 GB GDDR6, 255 Watt
69.42
+326%

RX 6900 outperforms 660M by a whopping 326% based on our aggregate benchmark results.

Primary details

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

Place in the ranking22332
Place by popularitynot in top-100not in top-100
Power efficiency18.6627.95
ArchitectureRDNA 2.0 (2020−2024)RDNA 2.0 (2020−2024)
GPU code nameNavi 21Rembrandt+
Market segmentDesktopLaptop
Release date28 October 2020 (4 years ago)3 January 2023 (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 cores4608384
Core clock speedno data1500 MHz
Boost clock speed2105 MHz1900 MHz
Number of transistors23,000 million13,100 million
Manufacturing process technology7 nm6 nm
Power consumption (TDP)255 Watt40 Watt
Texture fill rate606.245.60
Floating-point processing power19.4 TFLOPS1.459 TFLOPS
ROPs6416
TMUs28824
Ray Tracing Coresno data6

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).

InterfacePCIe 4.0 x16PCIe 4.0 x8
Width2-slotno data
Supplementary power connectors2x 8-pinNone

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 typeGDDR6System Shared
Maximum RAM amount16 GBSystem Shared
Memory bus width256 BitSystem Shared
Memory clock speed16 GB/sSystem Shared
Memory bandwidth512.0 GB/sno data
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 Connectors1x HDMI, 2x DisplayPort, 1x USB Type-CPortable Device Dependent
HDMI+-

API compatibility

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

DirectX12 Ultimate (12_2)12 Ultimate (12_2)
Shader Model6.56.7
OpenGL4.64.6
OpenCL2.02.0
Vulkan1.21.3

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

RX 6900 69.42
+326%
Radeon 660M 16.31

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

RX 6900 26751
+326%
Radeon 660M 6285

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 HD100−110
+300%
25
−300%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 24
+0%
24
+0%

Full HD
Medium Preset

Assassin's Creed Odyssey 21−24
+0%
21−24
+0%
Assassin's Creed Valhalla 26
+0%
26
+0%
Battlefield 5 30−33
+0%
30−33
+0%
Call of Duty: Modern Warfare 20−22
+0%
20−22
+0%
Cyberpunk 2077 20
+0%
20
+0%
Far Cry 5 21−24
+0%
21−24
+0%
Far Cry New Dawn 27−30
+0%
27−30
+0%
Forza Horizon 4 65−70
+0%
65−70
+0%
Hitman 3 21
+0%
21
+0%
Horizon Zero Dawn 50−55
+0%
50−55
+0%
Metro Exodus 30−35
+0%
30−35
+0%
Red Dead Redemption 2 27−30
+0%
27−30
+0%
Shadow of the Tomb Raider 30−35
+0%
30−35
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

Full HD
High Preset

Assassin's Creed Odyssey 21−24
+0%
21−24
+0%
Assassin's Creed Valhalla 19
+0%
19
+0%
Battlefield 5 30−33
+0%
30−33
+0%
Call of Duty: Modern Warfare 20−22
+0%
20−22
+0%
Cyberpunk 2077 14
+0%
14
+0%
Far Cry 5 21−24
+0%
21−24
+0%
Far Cry New Dawn 27−30
+0%
27−30
+0%
Forza Horizon 4 65−70
+0%
65−70
+0%
Hitman 3 21
+0%
21
+0%
Horizon Zero Dawn 50−55
+0%
50−55
+0%
Metro Exodus 30−35
+0%
30−35
+0%
Red Dead Redemption 2 27−30
+0%
27−30
+0%
Shadow of the Tomb Raider 33
+0%
33
+0%
The Witcher 3: Wild Hunt 24−27
+0%
24−27
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

Full HD
Ultra Preset

Assassin's Creed Odyssey 21−24
+0%
21−24
+0%
Assassin's Creed Valhalla 14−16
+0%
14−16
+0%
Call of Duty: Modern Warfare 20−22
+0%
20−22
+0%
Cyberpunk 2077 14−16
+0%
14−16
+0%
Far Cry 5 21−24
+0%
21−24
+0%
Forza Horizon 4 65−70
+0%
65−70
+0%
Hitman 3 18−20
+0%
18−20
+0%
Horizon Zero Dawn 22
+0%
22
+0%
Shadow of the Tomb Raider 27
+0%
27
+0%
The Witcher 3: Wild Hunt 15
+0%
15
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

Full HD
Epic Preset

Red Dead Redemption 2 27−30
+0%
27−30
+0%

1440p
High Preset

Battlefield 5 18−20
+0%
18−20
+0%
Far Cry New Dawn 14−16
+0%
14−16
+0%

1440p
Ultra Preset

Assassin's Creed Odyssey 10−11
+0%
10−11
+0%
Assassin's Creed Valhalla 6−7
+0%
6−7
+0%
Call of Duty: Modern Warfare 10−11
+0%
10−11
+0%
Cyberpunk 2077 5−6
+0%
5−6
+0%
Far Cry 5 10−12
+0%
10−12
+0%
Forza Horizon 4 40−45
+0%
40−45
+0%
Hitman 3 12−14
+0%
12−14
+0%
Horizon Zero Dawn 20−22
+0%
20−22
+0%
Metro Exodus 14−16
+0%
14−16
+0%
Shadow of the Tomb Raider 12−14
+0%
12−14
+0%
The Witcher 3: Wild Hunt 9−10
+0%
9−10
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

1440p
Epic Preset

Red Dead Redemption 2 16−18
+0%
16−18
+0%

4K
High Preset

Battlefield 5 9−10
+0%
9−10
+0%
Far Cry New Dawn 7−8
+0%
7−8
+0%
Hitman 3 6−7
+0%
6−7
+0%
Horizon Zero Dawn 40−45
+0%
40−45
+0%
Metro Exodus 8−9
+0%
8−9
+0%
The Witcher 3: Wild Hunt 7−8
+0%
7−8
+0%

4K
Ultra Preset

Assassin's Creed Odyssey 6−7
+0%
6−7
+0%
Assassin's Creed Valhalla 4−5
+0%
4−5
+0%
Call of Duty: Modern Warfare 4−5
+0%
4−5
+0%
Cyberpunk 2077 1−2
+0%
1−2
+0%
Far Cry 5 5−6
+0%
5−6
+0%
Forza Horizon 4 12−14
+0%
12−14
+0%
Shadow of the Tomb Raider 6−7
+0%
6−7
+0%
Watch Dogs: Legion 3−4
+0%
3−4
+0%

4K
Epic Preset

Red Dead Redemption 2 9−10
+0%
9−10
+0%

This is how RX 6900 and Radeon 660M compete in popular games:

  • RX 6900 is 300% faster in 1080p

All in all, in popular games:

  • there's a draw in 72 tests (100%)

Pros & cons summary


Performance score 69.42 16.31
Recency 28 October 2020 3 January 2023
Chip lithography 7 nm 6 nm
Power consumption (TDP) 255 Watt 40 Watt

RX 6900 has a 325.6% higher aggregate performance score.

Radeon 660M, on the other hand, has an age advantage of 2 years, a 16.7% more advanced lithography process, and 537.5% lower power consumption.

The Radeon RX 6900 is our recommended choice as it beats the Radeon 660M in performance tests.

Be aware that Radeon RX 6900 is a desktop card while Radeon 660M is a notebook one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


AMD Radeon RX 6900
Radeon RX 6900
AMD Radeon 660M
Radeon 660M

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.8 82 votes

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3.6 324 votes

Rate Radeon 660M on a scale of 1 to 5:

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Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.