GeForce GT 420M vs Radeon HD 7660G

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Aggregate performance score

We've compared Radeon HD 7660G with GeForce GT 420M, including specs and performance data.

HD 7660G
2012
35 Watt
1.23
+19.4%

HD 7660G outperforms GT 420M by a moderate 19% based on our aggregate benchmark results.

Primary details

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

Place in the ranking10391096
Place by popularitynot in top-100not in top-100
Power efficiency2.543.23
ArchitectureTeraScale 3 (2010−2013)Fermi (2010−2014)
GPU code nameDevastatorGF108
Market segmentDesktopLaptop
Release date15 May 2012 (12 years ago)3 September 2010 (14 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 cores38496
Core clock speed686 MHz500 MHz
Boost clock speed686 MHzno data
Number of transistors1,303 million585 million
Manufacturing process technology32 nm40 nm
Power consumption (TDP)35 Watt23 Watt
Texture fill rate16.468.000
Floating-point processing power0.5268 TFLOPS0.192 TFLOPS
ROPs84
TMUs2416

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
InterfaceIGPPCIe 2.0 x16
WidthIGPno 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 typeSystem SharedDDR3
Maximum RAM amountSystem Shared1 GB
Memory bus widthSystem Shared128 Bit
Memory clock speedSystem Shared800 MHz
Memory bandwidthno data25.6 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 ConnectorsNo outputsNo outputs

API compatibility

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

DirectX11.2 (11_0)12 API
Shader Model5.05.1
OpenGL4.44.5
OpenCL1.21.1
VulkanN/AN/A
CUDA-+

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.

HD 7660G 1.23
+19.4%
GT 420M 1.03

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.

HD 7660G 476
+19.9%
GT 420M 397

3DMark Vantage Performance

3DMark Vantage is an outdated DirectX 10 benchmark using 1280x1024 screen resolution. It taxes the graphics card with two scenes, one depicting a girl escaping some militarized base located within a sea cave, the other displaying a space fleet attack on a defenseless planet. It was discontinued in April 2017, and Time Spy benchmark is now recommended to be used instead.

HD 7660G 4523
+48.2%
GT 420M 3051

3DMark 11 Performance GPU

3DMark 11 is an obsolete DirectX 11 benchmark by Futuremark. It used four tests based on two scenes, one being few submarines exploring the submerged wreck of a sunken ship, the other is an abandoned temple deep in the jungle. All the tests are heavy with volumetric lighting and tessellation, and despite being done in 1280x720 resolution, are relatively taxing. Discontinued in January 2020, 3DMark 11 is now superseded by Time Spy.

HD 7660G 1057
+54.3%
GT 420M 685

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:

900p11
−9.1%
12
+9.1%
Full HD15
−13.3%
17
+13.3%
1200p9
+28.6%
7−8
−28.6%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 3−4
+0%
3−4
+0%

Full HD
Medium Preset

Assassin's Creed Odyssey 6−7
+20%
5−6
−20%
Call of Duty: Modern Warfare 4−5
+0%
4−5
+0%
Cyberpunk 2077 3−4
+0%
3−4
+0%
Far Cry 5 1−2
+0%
1−2
+0%
Far Cry New Dawn 3−4
+50%
2−3
−50%
Forza Horizon 4 2−3 0−1
Hitman 3 6−7
+20%
5−6
−20%
Horizon Zero Dawn 14−16
+7.7%
12−14
−7.7%
Red Dead Redemption 2 2−3
+100%
1−2
−100%
Shadow of the Tomb Raider 8−9
+14.3%
7−8
−14.3%
Watch Dogs: Legion 30−35
+3.1%
30−35
−3.1%

Full HD
High Preset

Assassin's Creed Odyssey 6−7
+20%
5−6
−20%
Call of Duty: Modern Warfare 4−5
+0%
4−5
+0%
Cyberpunk 2077 3−4
+0%
3−4
+0%
Far Cry 5 1−2
+0%
1−2
+0%
Far Cry New Dawn 3−4
+50%
2−3
−50%
Forza Horizon 4 2−3 0−1
Hitman 3 6−7
+20%
5−6
−20%
Horizon Zero Dawn 14−16
+7.7%
12−14
−7.7%
Red Dead Redemption 2 2−3
+100%
1−2
−100%
Shadow of the Tomb Raider 8−9
+14.3%
7−8
−14.3%
The Witcher 3: Wild Hunt 10−12
+0%
10−12
+0%
Watch Dogs: Legion 30−35
+3.1%
30−35
−3.1%

Full HD
Ultra Preset

Assassin's Creed Odyssey 6−7
+20%
5−6
−20%
Call of Duty: Modern Warfare 4−5
+0%
4−5
+0%
Cyberpunk 2077 3−4
+0%
3−4
+0%
Far Cry 5 1−2
+0%
1−2
+0%
Forza Horizon 4 2−3 0−1
Hitman 3 6−7
+20%
5−6
−20%
Horizon Zero Dawn 14−16
+7.7%
12−14
−7.7%
Shadow of the Tomb Raider 8−9
+14.3%
7−8
−14.3%
The Witcher 3: Wild Hunt 10−12
+0%
10−12
+0%
Watch Dogs: Legion 30−35
+3.1%
30−35
−3.1%

Full HD
Epic Preset

Red Dead Redemption 2 2−3
+100%
1−2
−100%

1440p
High Preset

Battlefield 5 1−2
+0%
1−2
+0%
Far Cry New Dawn 2−3
+100%
1−2
−100%

1440p
Ultra Preset

Assassin's Creed Odyssey 1−2
+0%
1−2
+0%
Call of Duty: Modern Warfare 0−1 0−1
Cyberpunk 2077 1−2
+0%
1−2
+0%
Far Cry 5 1−2
+0%
1−2
+0%
Hitman 3 7−8
+0%
7−8
+0%
Horizon Zero Dawn 4−5
+0%
4−5
+0%
The Witcher 3: Wild Hunt 0−1 0−1
Watch Dogs: Legion 6−7
+50%
4−5
−50%

1440p
Epic Preset

Red Dead Redemption 2 4−5
+0%
4−5
+0%

4K
High Preset

Far Cry New Dawn 0−1 0−1

4K
Ultra Preset

Assassin's Creed Odyssey 1−2
+0%
1−2
+0%
Assassin's Creed Valhalla 1−2 0−1
Call of Duty: Modern Warfare 0−1 0−1
Far Cry 5 0−1 0−1

4K
Epic Preset

Red Dead Redemption 2 3−4
+50%
2−3
−50%

This is how HD 7660G and GT 420M compete in popular games:

  • GT 420M is 9% faster in 900p
  • GT 420M is 13% faster in 1080p
  • HD 7660G is 29% faster in 1200p

Here's the range of performance differences observed across popular games:

  • in Red Dead Redemption 2, with 1080p resolution and the Medium Preset, the HD 7660G is 100% faster.

All in all, in popular games:

  • HD 7660G is ahead in 23 tests (53%)
  • there's a draw in 20 tests (47%)

Pros & cons summary


Performance score 1.23 1.03
Recency 15 May 2012 3 September 2010
Chip lithography 32 nm 40 nm
Power consumption (TDP) 35 Watt 23 Watt

HD 7660G has a 19.4% higher aggregate performance score, an age advantage of 1 year, and a 25% more advanced lithography process.

GT 420M, on the other hand, has 52.2% lower power consumption.

The Radeon HD 7660G is our recommended choice as it beats the GeForce GT 420M in performance tests.

Be aware that Radeon HD 7660G is a desktop card while GeForce GT 420M 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 HD 7660G
Radeon HD 7660G
NVIDIA GeForce GT 420M
GeForce GT 420M

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.


3.2 131 vote

Rate Radeon HD 7660G on a scale of 1 to 5:

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2.7 121 vote

Rate GeForce GT 420M 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.