Radeon RX 6600S vs Iris Plus Graphics 655
Aggregate performance score
We've compared Iris Plus Graphics 655 and Radeon RX 6600S, covering specs and all relevant benchmarks.
RX 6600S outperforms Iris Plus Graphics 655 by a whopping 619% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 671 | 177 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 20.67 | 27.88 |
| Architecture | Generation 9.5 (2016−2020) | RDNA 2.0 (2020−2024) |
| GPU code name | Coffee Lake GT3e | Navi 23 |
| Market segment | Laptop | Laptop |
| Release date | 3 April 2018 (6 years ago) | 4 January 2022 (3 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 | 384 | 1792 |
| Core clock speed | 300 MHz | 1700 MHz |
| Boost clock speed | 1050 MHz | 2000 MHz |
| Number of transistors | 189 million | 11,060 million |
| Manufacturing process technology | 14 nm+++ | 7 nm |
| Power consumption (TDP) | 15 Watt | 80 Watt |
| Texture fill rate | 50.40 | 224.0 |
| Floating-point processing power | 0.8064 TFLOPS | 7.168 TFLOPS |
| ROPs | 6 | 64 |
| TMUs | 48 | 112 |
| Ray Tracing Cores | no data | 28 |
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 | no data | medium sized |
| Interface | Ring Bus | PCIe 4.0 x8 |
| Supplementary power connectors | no data | None |
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 | GDDR6 |
| Maximum RAM amount | System Shared | 4 GB |
| Memory bus width | System Shared | 128 Bit |
| Memory clock speed | System Shared | 1750 MHz |
| Memory bandwidth | no data | 224.0 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 | Portable Device Dependent | No outputs |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Quick Sync | + | no data |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_1) | 12 Ultimate (12_2) |
| Shader Model | 6.4 | 6.5 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 2.1 |
| Vulkan | 1.3 | 1.3 |
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.
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.
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 HD | 19
−584%
| 130−140
+584%
|
| 1440p | 10
−600%
| 70−75
+600%
|
| 4K | 15
−567%
| 100−110
+567%
|
FPS performance in popular games
Full HD
Low Preset
| Counter-Strike 2 | 10−11
−540%
|
60−65
+540%
|
| Cyberpunk 2077 | 10−11
−580%
|
65−70
+580%
|
Full HD
Medium Preset
| Battlefield 5 | 12−14
−615%
|
90−95
+615%
|
| Counter-Strike 2 | 10−11
−540%
|
60−65
+540%
|
| Cyberpunk 2077 | 10−11
−580%
|
65−70
+580%
|
| Forza Horizon 4 | 18
−733%
|
150−160
+733%
|
| Forza Horizon 5 | 8−9
−950%
|
80−85
+950%
|
| Metro Exodus | 11
−636%
|
80−85
+636%
|
| Red Dead Redemption 2 | 14−16
−371%
|
65−70
+371%
|
| Valorant | 12−14
−975%
|
120−130
+975%
|
Full HD
High Preset
| Battlefield 5 | 12−14
−615%
|
90−95
+615%
|
| Counter-Strike 2 | 10−11
−540%
|
60−65
+540%
|
| Cyberpunk 2077 | 10−11
−580%
|
65−70
+580%
|
| Dota 2 | 17
−524%
|
100−110
+524%
|
| Far Cry 5 | 16
−450%
|
85−90
+450%
|
| Fortnite | 24−27
−477%
|
150−160
+477%
|
| Forza Horizon 4 | 17
−782%
|
150−160
+782%
|
| Forza Horizon 5 | 8−9
−950%
|
80−85
+950%
|
| Grand Theft Auto V | 10
−960%
|
100−110
+960%
|
| Metro Exodus | 5
−1520%
|
80−85
+1520%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 41
−346%
|
180−190
+346%
|
| Red Dead Redemption 2 | 14−16
−371%
|
65−70
+371%
|
| The Witcher 3: Wild Hunt | 14−16
−633%
|
110−120
+633%
|
| Valorant | 12−14
−975%
|
120−130
+975%
|
| World of Tanks | 50
−452%
|
270−280
+452%
|
Full HD
Ultra Preset
| Battlefield 5 | 12−14
−615%
|
90−95
+615%
|
| Counter-Strike 2 | 10−11
−540%
|
60−65
+540%
|
| Cyberpunk 2077 | 10−11
−580%
|
65−70
+580%
|
| Dota 2 | 28
−279%
|
100−110
+279%
|
| Far Cry 5 | 21−24
−283%
|
85−90
+283%
|
| Forza Horizon 4 | 15
−900%
|
150−160
+900%
|
| Forza Horizon 5 | 8−9
−950%
|
80−85
+950%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 35−40
−369%
|
180−190
+369%
|
| Valorant | 12−14
−975%
|
120−130
+975%
|
1440p
High Preset
| Dota 2 | 4
−1350%
|
55−60
+1350%
|
| Grand Theft Auto V | 4
−1350%
|
55−60
+1350%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 30−33
−483%
|
170−180
+483%
|
| Red Dead Redemption 2 | 3−4
−933%
|
30−35
+933%
|
| World of Tanks | 30−35
−550%
|
200−210
+550%
|
1440p
Ultra Preset
| Battlefield 5 | 6−7
−950%
|
60−65
+950%
|
| Cyberpunk 2077 | 5−6
−500%
|
30−33
+500%
|
| Far Cry 5 | 10−11
−920%
|
100−110
+920%
|
| Forza Horizon 4 | 6−7
−1400%
|
90−95
+1400%
|
| Forza Horizon 5 | 6−7
−783%
|
50−55
+783%
|
| Metro Exodus | 2−3
−3500%
|
70−75
+3500%
|
| The Witcher 3: Wild Hunt | 7−8
−643%
|
50−55
+643%
|
| Valorant | 12−14
−623%
|
90−95
+623%
|
4K
High Preset
| Dota 2 | 16−18
−253%
|
60−65
+253%
|
| Grand Theft Auto V | 16−18
−275%
|
60−65
+275%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 12−14
−685%
|
100−110
+685%
|
| Red Dead Redemption 2 | 3−4
−600%
|
21−24
+600%
|
| The Witcher 3: Wild Hunt | 16−18
−275%
|
60−65
+275%
|
| World of Tanks | 12
−608%
|
85−90
+608%
|
4K
Ultra Preset
| Battlefield 5 | 4−5
−800%
|
35−40
+800%
|
| Cyberpunk 2077 | 2−3
−550%
|
12−14
+550%
|
| Dota 2 | 12
−400%
|
60−65
+400%
|
| Far Cry 5 | 5−6
−800%
|
45−50
+800%
|
| Fortnite | 3−4
−1333%
|
40−45
+1333%
|
| Forza Horizon 4 | 3−4
−1633%
|
50−55
+1633%
|
| Forza Horizon 5 | 2−3
−1350%
|
27−30
+1350%
|
| Valorant | 4−5
−1100%
|
45−50
+1100%
|
1440p
Ultra Preset
| Counter-Strike 2 | 24−27
+0%
|
24−27
+0%
|
4K
High Preset
| Counter-Strike 2 | 14−16
+0%
|
14−16
+0%
|
| Metro Exodus | 24−27
+0%
|
24−27
+0%
|
4K
Ultra Preset
| Counter-Strike 2 | 14−16
+0%
|
14−16
+0%
|
This is how Iris Plus Graphics 655 and RX 6600S compete in popular games:
- RX 6600S is 584% faster in 1080p
- RX 6600S is 600% faster in 1440p
- RX 6600S is 567% faster in 4K
Here's the range of performance differences observed across popular games:
- in Metro Exodus, with 1440p resolution and the Ultra Preset, the RX 6600S is 3500% faster.
All in all, in popular games:
- RX 6600S is ahead in 60 tests (94%)
- there's a draw in 4 tests (6%)
Pros & cons summary
| Performance score | 4.32 | 31.08 |
| Recency | 3 April 2018 | 4 January 2022 |
| Chip lithography | 14 nm | 7 nm |
| Power consumption (TDP) | 15 Watt | 80 Watt |
Iris Plus Graphics 655 has 433.3% lower power consumption.
RX 6600S, on the other hand, has a 619.4% higher aggregate performance score, an age advantage of 3 years, and a 100% more advanced lithography process.
The Radeon RX 6600S is our recommended choice as it beats the Iris Plus Graphics 655 in performance tests.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
