Radeon RX 7900 XTX vs RX 6600M
Aggregate performance score
RX 7900 XTX outperforms RX 6600M by a whopping 126% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 132 | 7 |
| Place by popularity | not in top-100 | 85 |
| Cost-effectiveness evaluation | no data | 28.04 |
| Architecture | RDNA 2 (2020−2022) | RDNA 3 |
| GPU code name | R21M-E65-70 | Navi 31 XTX |
| Market segment | Laptop | Desktop |
| Release date | 1 September 2020 (3 years ago) | 3 November 2022 (1 year ago) |
| Launch price (MSRP) | no data | $999 |
| Current price | no data | $859 (0.9x MSRP) |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 | 1792 | 6144 |
| Core clock speed | 2068 MHz | no data |
| Boost clock speed | 2177 MHz | 2270 MHz |
| Number of transistors | 11,060 million | 57,700 million |
| Manufacturing process technology | 7 nm | 5 nm |
| Power consumption (TDP) | 100 Watt (50 - 100 Watt TGP) | 355 Watt |
| Texture fill rate | 235.8 | 959.6 |
Form factor & compatibility
Information on Radeon RX 6600M and Radeon RX 7900 XTX 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 | PCIe 4.0 x8 | PCIe 4.0 x16 |
| Length | no data | 287 mm |
| Width | no data | 2-slot |
| Supplementary power connectors | None | 2x 8-pin |
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 | GDDR6 | GDDR6 |
| Maximum RAM amount | 8 GB | 24 GB |
| Memory bus width | 128 Bit | 384 Bit |
| Memory clock speed | 14000 MHz | 20000 MHz |
| Memory bandwidth | 256.0 GB/s | 960.0 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 | No outputs | 1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C |
| HDMI | no data | + |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 Ultimate (12_2) | 12 Ultimate (12_2) |
| Shader Model | 6.5 | 6.7 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 2.1 |
| Vulkan | 1.2 | 1.3 |
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.
RX 7900 XTX outperforms RX 6600M by 126% based on our aggregate benchmark results.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. 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.
Benchmark coverage: 25%
RX 7900 XTX outperforms RX 6600M by 126% in Passmark.
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.
Benchmark coverage: 17%
RX 7900 XTX outperforms RX 6600M by 161% in 3DMark 11 Performance GPU.
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.
Benchmark coverage: 17%
RX 7900 XTX outperforms RX 6600M by 105% in 3DMark Vantage Performance.
3DMark Fire Strike Graphics
Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.
Benchmark coverage: 14%
RX 7900 XTX outperforms RX 6600M by 175% in 3DMark Fire Strike Graphics.
3DMark Cloud Gate GPU
Cloud Gate is an outdated DirectX 11 feature level 10 benchmark that was used for home PCs and basic notebooks. It displays a few scenes of some weird space teleportation device launching spaceships into unknown, using fixed resolution of 1280x720. Just like Ice Storm benchmark, it has been discontinued in January 2020 and replaced by 3DMark Night Raid.
Benchmark coverage: 14%
RX 7900 XTX outperforms RX 6600M by 46% in 3DMark Cloud Gate GPU.
3DMark Ice Storm GPU
Ice Storm Graphics is an obsolete benchmark, part of 3DMark suite. Ice Storm was used to measure entry level laptops and Windows-based tablets performance. It utilizes DirectX 11 feature level 9 to display a battle between two space fleets near a frozen planet in 1280x720 resolution. Discontinued in January 2020, it is now superseded by 3DMark Night Raid.
Benchmark coverage: 8%
RX 7900 XTX outperforms RX 6600M by 58% in 3DMark Ice Storm GPU.
SPECviewperf 12 - specvp12 maya-04
Benchmark coverage: 3%
RX 7900 XTX outperforms RX 6600M by 131% in SPECviewperf 12 - specvp12 maya-04.
SPECviewperf 12 - specvp12 sw-03
Benchmark coverage: 3%
RX 7900 XTX outperforms RX 6600M by 100% in SPECviewperf 12 - specvp12 sw-03.
SPECviewperf 12 - specvp12 snx-02
Benchmark coverage: 3%
RX 7900 XTX outperforms RX 6600M by 144% in SPECviewperf 12 - specvp12 snx-02.
SPECviewperf 12 - specvp12 catia-04
Benchmark coverage: 3%
RX 7900 XTX outperforms RX 6600M by 159% in SPECviewperf 12 - specvp12 catia-04.
SPECviewperf 12 - specvp12 creo-01
Benchmark coverage: 3%
RX 7900 XTX outperforms RX 6600M by 83% in SPECviewperf 12 - specvp12 creo-01.
SPECviewperf 12 - specvp12 mediacal-01
Benchmark coverage: 3%
RX 7900 XTX outperforms RX 6600M by 261% in SPECviewperf 12 - specvp12 mediacal-01.
SPECviewperf 12 - specvp12 showcase-01
Benchmark coverage: 3%
RX 7900 XTX outperforms RX 6600M by 168% in SPECviewperf 12 - specvp12 showcase-01.
SPECviewperf 12 - specvp12 3dsmax-05
Benchmark coverage: 2%
RX 7900 XTX outperforms RX 6600M by 222% in SPECviewperf 12 - specvp12 3dsmax-05.
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 | 95
−159%
| 246
+159%
|
| 1440p | 54
−222%
| 174
+222%
|
| 4K | 31
−261%
| 112
+261%
|
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 110
−118%
|
240−250
+118%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 108
−122%
|
240−250
+122%
|
| Assassin's Creed Valhalla | 95
−121%
|
210−220
+121%
|
| Battlefield 5 | 110−120
−117%
|
250−260
+117%
|
| Call of Duty: Modern Warfare | 70−75
−122%
|
160−170
+122%
|
| Cyberpunk 2077 | 90
−122%
|
200−210
+122%
|
| Far Cry 5 | 75−80
−118%
|
170−180
+118%
|
| Far Cry New Dawn | 85−90
−125%
|
200−210
+125%
|
| Forza Horizon 4 | 202
−123%
|
450−500
+123%
|
| Hitman 3 | 70−75
−119%
|
160−170
+119%
|
| Horizon Zero Dawn | 239
−109%
|
500−550
+109%
|
| Metro Exodus | 100−110
−119%
|
230−240
+119%
|
| Red Dead Redemption 2 | 85−90
−116%
|
190−200
+116%
|
| Shadow of the Tomb Raider | 216
−108%
|
450−500
+108%
|
| Watch Dogs: Legion | 120
−125%
|
270−280
+125%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 106
−117%
|
230−240
+117%
|
| Assassin's Creed Valhalla | 79
−115%
|
170−180
+115%
|
| Battlefield 5 | 110−120
−117%
|
250−260
+117%
|
| Call of Duty: Modern Warfare | 70−75
−122%
|
160−170
+122%
|
| Cyberpunk 2077 | 72
−122%
|
160−170
+122%
|
| Far Cry 5 | 75−80
−118%
|
170−180
+118%
|
| Far Cry New Dawn | 85−90
−125%
|
200−210
+125%
|
| Forza Horizon 4 | 130−140
−116%
|
300−310
+116%
|
| Hitman 3 | 70−75
−119%
|
160−170
+119%
|
| Horizon Zero Dawn | 140−150
−111%
|
300−310
+111%
|
| Metro Exodus | 48
−108%
|
100−105
+108%
|
| Red Dead Redemption 2 | 85−90
−116%
|
190−200
+116%
|
| Shadow of the Tomb Raider | 173
−102%
|
350−400
+102%
|
| The Witcher 3: Wild Hunt | 142
−111%
|
300−310
+111%
|
| Watch Dogs: Legion | 90−95
−122%
|
200−210
+122%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 79
−115%
|
170−180
+115%
|
| Assassin's Creed Valhalla | 69
−117%
|
150−160
+117%
|
| Call of Duty: Modern Warfare | 70−75
−122%
|
160−170
+122%
|
| Cyberpunk 2077 | 61
−113%
|
130−140
+113%
|
| Far Cry 5 | 75−80
−118%
|
170−180
+118%
|
| Forza Horizon 4 | 168
−108%
|
350−400
+108%
|
| Horizon Zero Dawn | 134
−124%
|
300−310
+124%
|
| Shadow of the Tomb Raider | 153
−96.1%
|
300−310
+96.1%
|
| The Witcher 3: Wild Hunt | 85
−124%
|
190−200
+124%
|
| Watch Dogs: Legion | 59
−120%
|
130−140
+120%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 85−90
−116%
|
190−200
+116%
|
1440p
High Preset
| Battlefield 5 | 65−70
−124%
|
150−160
+124%
|
| Far Cry New Dawn | 80−85
−122%
|
180−190
+122%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 51
−116%
|
110−120
+116%
|
| Assassin's Creed Valhalla | 52
−112%
|
110−120
+112%
|
| Call of Duty: Modern Warfare | 50−55
−108%
|
110−120
+108%
|
| Cyberpunk 2077 | 36
−122%
|
80−85
+122%
|
| Far Cry 5 | 90
−122%
|
200−210
+122%
|
| Forza Horizon 4 | 128
−119%
|
280−290
+119%
|
| Hitman 3 | 45−50
−122%
|
100−105
+122%
|
| Horizon Zero Dawn | 98
−124%
|
220−230
+124%
|
| Metro Exodus | 85
−124%
|
190−200
+124%
|
| Shadow of the Tomb Raider | 100
−120%
|
220−230
+120%
|
| The Witcher 3: Wild Hunt | 62
−126%
|
140−150
+126%
|
| Watch Dogs: Legion | 42
−114%
|
90−95
+114%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 60−65
−113%
|
130−140
+113%
|
4K
High Preset
| Battlefield 5 | 35−40
−114%
|
75−80
+114%
|
| Far Cry New Dawn | 27−30
−124%
|
65−70
+124%
|
| Hitman 3 | 27−30
−124%
|
65−70
+124%
|
| Horizon Zero Dawn | 40−45
−116%
|
95−100
+116%
|
| Shadow of the Tomb Raider | 31
−126%
|
70−75
+126%
|
| The Witcher 3: Wild Hunt | 44
−116%
|
95−100
+116%
|
4K
Ultra Preset
| Assassin's Creed Odyssey | 29
−124%
|
65−70
+124%
|
| Assassin's Creed Valhalla | 27
−122%
|
60−65
+122%
|
| Call of Duty: Modern Warfare | 21−24
−105%
|
45−50
+105%
|
| Cyberpunk 2077 | 14
−114%
|
30−33
+114%
|
| Far Cry 5 | 20−22
−125%
|
45−50
+125%
|
| Forza Horizon 4 | 74
−116%
|
160−170
+116%
|
| Horizon Zero Dawn | 53
−108%
|
110−120
+108%
|
| Metro Exodus | 48
−108%
|
100−105
+108%
|
| Watch Dogs: Legion | 21
−114%
|
45−50
+114%
|
4K
Epic Preset
| Red Dead Redemption 2 | 30−35
−126%
|
70−75
+126%
|
This is how RX 6600M and RX 7900 XTX compete in popular games:
- RX 7900 XTX is 159% faster in 1080p
- RX 7900 XTX is 222% faster in 1440p
- RX 7900 XTX is 261% faster in 4K
Pros & cons summary
| Performance score | 35.39 | 80.01 |
| Recency | 1 September 2020 | 3 November 2022 |
| Maximum RAM amount | 8 GB | 24 GB |
| Chip lithography | 7 nm | 5 nm |
| Power consumption (TDP) | 100 Watt | 355 Watt |
The Radeon RX 7900 XTX is our recommended choice as it beats the Radeon RX 6600M in performance tests.
Be aware that Radeon RX 6600M is a notebook card while Radeon RX 7900 XTX 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.
