Radeon HD 6450 GDDR5 vs HD 6620G
Aggregate performance score
We've compared Radeon HD 6620G with Radeon HD 6450 GDDR5, including specs and performance data.
HD 6450 GDDR5 outperforms HD 6620G by a moderate 10% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
Place in performance ranking | 1097 | 1086 |
Place by popularity | not in top-100 | not in top-100 |
Architecture | Terascale 2 (2009−2015) | Terascale 2 (2009−2015) |
GPU code name | Llano | Caicos |
Market segment | Laptop | Desktop |
Release date | 15 June 2011 (13 years ago) | 18 April 2011 (13 years ago) |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
Pipelines / CUDA cores | 400 | 160 |
Core clock speed | 400 MHz | 750 MHz |
Number of transistors | 1000 Million | no data |
Manufacturing process technology | 32 nm | 40 nm |
Power consumption (TDP) | 35 Watt | 27 Watt |
Texture fill rate | 8.880 | no data |
Form factor & compatibility
Information on Radeon HD 6620G and Radeon HD 6450 GDDR5 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
Laptop size | medium sized | no data |
Interface | IGP | no 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 type | no data | GDDR5 |
Maximum RAM amount | System Shared | 1 GB |
Memory bus width | no data | 64 Bit |
Memory clock speed | no data | 900 MHz |
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 data |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
DirectX | 11.2 (11_0) | 11 |
Shader Model | 5.0 | no data |
OpenGL | 4.4 | no data |
OpenCL | 1.2 | no data |
Vulkan | N/A | no data |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance 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.
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.
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.
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 | 6−7
−16.7%
| 7
+16.7%
|
Full HD | 13
−23.1%
| 16
+23.1%
|
1200p | 4−5
−25%
| 5
+25%
|
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
+0%
|
10−11
+0%
|
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
+0%
|
10−11
+0%
|
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%
|
1440p
Epic Preset
Red Dead Redemption 2 | 3−4
+0%
|
3−4
+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 | 0−1 | 0−1 |
Far Cry 5 | 0−1 | 0−1 |
4K
Epic Preset
Red Dead Redemption 2 | 2−3
+0%
|
2−3
+0%
|
4K
Ultra Preset
Call of Duty: Modern Warfare | 0−1 | 0−1 |
This is how HD 6620G and HD 6450 GDDR5 compete in popular games:
- HD 6450 GDDR5 is 17% faster in 900p
- HD 6450 GDDR5 is 23% faster in 1080p
- HD 6450 GDDR5 is 25% faster in 1200p
Here's the range of performance differences observed across popular games:
- in Call of Duty: Modern Warfare, with 1080p resolution and the Medium Preset, the HD 6450 GDDR5 is 33% faster.
All in all, in popular games:
- HD 6450 GDDR5 is ahead in 10 tests (26%)
- there's a draw in 28 tests (74%)
Pros & cons summary
Performance score | 0.88 | 0.97 |
Recency | 15 June 2011 | 18 April 2011 |
Chip lithography | 32 nm | 40 nm |
Power consumption (TDP) | 35 Watt | 27 Watt |
HD 6620G has an age advantage of 1 month, and a 25% more advanced lithography process.
HD 6450 GDDR5, on the other hand, has a 10.2% higher aggregate performance score, and 29.6% lower power consumption.
The Radeon HD 6450 GDDR5 is our recommended choice as it beats the Radeon HD 6620G in performance tests.
Be aware that Radeon HD 6620G is a notebook card while Radeon HD 6450 GDDR5 is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.