GeForce GT 420M vs Radeon HD 6620G

Place in the ranking	1127	1103
Place by popularity	not in top-100	not in top-100
Power efficiency	1.72	3.07
Architecture	TeraScale 2 (2009−2015)	Fermi (2010−2014)
GPU code name	Sumo	GF108
Market segment	Laptop	Laptop
Release date	7 December 2011 (13 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 cores	400	96
Core clock speed	444 MHz	500 MHz
Number of transistors	1,178 million	585 million
Manufacturing process technology	32 nm	40 nm
Power consumption (TDP)	35 Watt	23 Watt
Texture fill rate	8.880	8.000
Floating-point processing power	0.3552 TFLOPS	0.192 TFLOPS
ROPs	8	4
TMUs	20	16

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	medium sized
Interface	IGP	PCIe 2.0 x16

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	DDR3
Maximum RAM amount	System Shared	1 GB
Memory bus width	System Shared	128 Bit
Memory clock speed	System Shared	800 MHz
Memory bandwidth	no data	25.6 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 Connectors

No outputs

API compatibility

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

DirectX	11.2 (11_0)	12 API
Shader Model	5.0	5.1
OpenGL	4.4	4.5
OpenCL	1.2	1.1
Vulkan	N/A	N/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 6620G 0.88

GT 420M 1.03
+17%

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 6620G 341

GT 420M 396
+16.1%

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 6620G 650

GT 420M 685
+5.4%

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 6620G 2443

GT 420M 3051
+24.9%

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:

900p	10−12 −20%	12 +20%
Full HD	13 −23.1%	16 +23.1%

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	5−6 +0%	5−6 +0%
Call of Duty: Modern Warfare	3−4 −33.3%	4−5 +33.3%
Cyberpunk 2077	3−4 +0%	3−4 +0%
Far Cry 5	0−1	1−2
Far Cry New Dawn	2−3 +0%	2−3 +0%
Hitman 3	5−6 +0%	5−6 +0%
Horizon Zero Dawn	12−14 −8.3%	12−14 +8.3%
Red Dead Redemption 2	1−2 +0%	1−2 +0%
Shadow of the Tomb Raider	7−8 +0%	7−8 +0%
Watch Dogs: Legion	30−35 −3.2%	30−35 +3.2%

Full HD
High Preset

Assassin's Creed Odyssey	5−6 +0%	5−6 +0%
Call of Duty: Modern Warfare	3−4 −33.3%	4−5 +33.3%
Cyberpunk 2077	3−4 +0%	3−4 +0%
Far Cry 5	0−1	1−2
Far Cry New Dawn	2−3 +0%	2−3 +0%
Hitman 3	5−6 +0%	5−6 +0%
Horizon Zero Dawn	12−14 −8.3%	12−14 +8.3%
Red Dead Redemption 2	1−2 +0%	1−2 +0%
Shadow of the Tomb Raider	7−8 +0%	7−8 +0%
The Witcher 3: Wild Hunt	10−11 −10%	10−12 +10%
Watch Dogs: Legion	30−35 −3.2%	30−35 +3.2%

Full HD
Ultra Preset

Assassin's Creed Odyssey	5−6 +0%	5−6 +0%
Call of Duty: Modern Warfare	3−4 −33.3%	4−5 +33.3%
Cyberpunk 2077	3−4 +0%	3−4 +0%
Far Cry 5	0−1	1−2
Hitman 3	5−6 +0%	5−6 +0%
Horizon Zero Dawn	12−14 −8.3%	12−14 +8.3%
Shadow of the Tomb Raider	7−8 +0%	7−8 +0%
The Witcher 3: Wild Hunt	10−11 −10%	10−12 +10%
Watch Dogs: Legion	30−35 −3.2%	30−35 +3.2%

Full HD
Epic Preset

Red Dead Redemption 2

1−2

+0%

1−2

+0%

1440p
High Preset

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

1440p
Ultra Preset

Assassin's Creed Odyssey	0−1	1−2
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	3−4 −33.3%	4−5 +33.3%