Radeon RX 6600 XT vs GeForce GTX 660 OEM
Aggregate performance score
We've compared GeForce GTX 660 OEM and Radeon RX 6600 XT, covering specs and all relevant benchmarks.
RX 6600 XT outperforms GTX 660 OEM by a whopping 1174% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 744 | 92 |
| Place by popularity | not in top-100 | 75 |
| Cost-effectiveness evaluation | no data | 62.18 |
| Power efficiency | 1.78 | 18.39 |
| Architecture | Kepler (2012−2018) | RDNA 2.0 (2020−2024) |
| GPU code name | GK104 | Navi 23 |
| Market segment | Desktop | Desktop |
| Release date | 22 August 2012 (12 years ago) | 30 July 2021 (3 years ago) |
| Launch price (MSRP) | no data | $379 |
Cost-effectiveness evaluation
The higher the performance-to-price ratio, the better. We use the manufacturer's recommended prices for comparison.
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 | 1152 | 2048 |
| Core clock speed | 823 MHz | 1968 MHz |
| Boost clock speed | 888 MHz | 2589 MHz |
| Number of transistors | 3,540 million | 11,060 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 130 Watt | 160 Watt |
| Texture fill rate | 85.25 | 331.4 |
| Floating-point processing power | 2.046 TFLOPS | 10.6 TFLOPS |
| ROPs | 32 | 64 |
| TMUs | 96 | 128 |
| Ray Tracing Cores | no data | 32 |
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).
| Interface | PCIe 3.0 x16 | PCIe 4.0 x8 |
| Length | 241 mm | 190 mm |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 1x 6-pin | 1x 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 | GDDR5 | GDDR6 |
| Maximum RAM amount | 2 GB | 8 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 1400 MHz | 2000 MHz |
| Memory bandwidth | 179.2 GB/s | 256.0 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 | 2x DVI, 1x HDMI, 1x DisplayPort | 1x HDMI, 2x DisplayPort |
| HDMI | + | + |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12.0 Ultimate (12_2) |
| Shader Model | 5.1 | 6.5 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.1.126 | 1.2 |
| CUDA | 3.0 | - |
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 | 10−12
−1220%
| 132
+1220%
|
| 1440p | 5−6
−1400%
| 75
+1400%
|
| 4K | 3−4
−1333%
| 43
+1333%
|
Cost per frame, $
| 1080p | no data | 2.87 |
| 1440p | no data | 5.05 |
| 4K | no data | 8.81 |
FPS performance in popular games
Full HD
Low Preset
| Atomic Heart | 120−130
+0%
|
120−130
+0%
|
| Counter-Strike 2 | 120
+0%
|
120
+0%
|
| Cyberpunk 2077 | 79
+0%
|
79
+0%
|
Full HD
Medium Preset
| Atomic Heart | 120−130
+0%
|
120−130
+0%
|
| Battlefield 5 | 130−140
+0%
|
130−140
+0%
|
| Counter-Strike 2 | 90−95
+0%
|
90−95
+0%
|
| Cyberpunk 2077 | 78
+0%
|
78
+0%
|
| Far Cry 5 | 151
+0%
|
151
+0%
|
| Fortnite | 170−180
+0%
|
170−180
+0%
|
| Forza Horizon 4 | 150−160
+0%
|
150−160
+0%
|
| Forza Horizon 5 | 123
+0%
|
123
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 150−160
+0%
|
150−160
+0%
|
| Valorant | 220−230
+0%
|
220−230
+0%
|
Full HD
High Preset
| Atomic Heart | 120−130
+0%
|
120−130
+0%
|
| Battlefield 5 | 130−140
+0%
|
130−140
+0%
|
| Counter-Strike 2 | 90−95
+0%
|
90−95
+0%
|
| Counter-Strike: Global Offensive | 270−280
+0%
|
270−280
+0%
|
| Cyberpunk 2077 | 76
+0%
|
76
+0%
|
| Dota 2 | 170
+0%
|
170
+0%
|
| Far Cry 5 | 141
+0%
|
141
+0%
|
| Fortnite | 170−180
+0%
|
170−180
+0%
|
| Forza Horizon 4 | 150−160
+0%
|
150−160
+0%
|
| Forza Horizon 5 | 115
+0%
|
115
+0%
|
| Grand Theft Auto V | 135
+0%
|
135
+0%
|
| Metro Exodus | 95
+0%
|
95
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 150−160
+0%
|
150−160
+0%
|
| The Witcher 3: Wild Hunt | 176
+0%
|
176
+0%
|
| Valorant | 220−230
+0%
|
220−230
+0%
|
Full HD
Ultra Preset
| Battlefield 5 | 130−140
+0%
|
130−140
+0%
|
| Counter-Strike 2 | 67
+0%
|
67
+0%
|
| Cyberpunk 2077 | 69
+0%
|
69
+0%
|
| Dota 2 | 120
+0%
|
120
+0%
|
| Far Cry 5 | 133
+0%
|
133
+0%
|
| Forza Horizon 4 | 150−160
+0%
|
150−160
+0%
|
| Forza Horizon 5 | 97
+0%
|
97
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 150−160
+0%
|
150−160
+0%
|
| The Witcher 3: Wild Hunt | 99
+0%
|
99
+0%
|
| Valorant | 220−230
+0%
|
220−230
+0%
|
Full HD
Epic Preset
| Fortnite | 170−180
+0%
|
170−180
+0%
|
1440p
High Preset
| Counter-Strike 2 | 30−35
+0%
|
30−35
+0%
|
| Counter-Strike: Global Offensive | 270−280
+0%
|
270−280
+0%
|
| Grand Theft Auto V | 68
+0%
|
68
+0%
|
| Metro Exodus | 56
+0%
|
56
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 170−180
+0%
|
170−180
+0%
|
| Valorant | 260−270
+0%
|
260−270
+0%
|
1440p
Ultra Preset
| Battlefield 5 | 100−110
+0%
|
100−110
+0%
|
| Cyberpunk 2077 | 40
+0%
|
40
+0%
|
| Far Cry 5 | 105
+0%
|
105
+0%
|
| Forza Horizon 4 | 110−120
+0%
|
110−120
+0%
|
| Forza Horizon 5 | 71
+0%
|
71
+0%
|
| The Witcher 3: Wild Hunt | 75−80
+0%
|
75−80
+0%
|
1440p
Epic Preset
| Fortnite | 100−110
+0%
|
100−110
+0%
|
4K
High Preset
| Atomic Heart | 30−35
+0%
|
30−35
+0%
|
| Counter-Strike 2 | 20−22
+0%
|
20−22
+0%
|
| Grand Theft Auto V | 64
+0%
|
64
+0%
|
| Metro Exodus | 34
+0%
|
34
+0%
|
| The Witcher 3: Wild Hunt | 54
+0%
|
54
+0%
|
| Valorant | 240−250
+0%
|
240−250
+0%
|
4K
Ultra Preset
| Battlefield 5 | 60−65
+0%
|
60−65
+0%
|
| Counter-Strike 2 | 8
+0%
|
8
+0%
|
| Cyberpunk 2077 | 14
+0%
|
14
+0%
|
| Dota 2 | 86
+0%
|
86
+0%
|
| Far Cry 5 | 51
+0%
|
51
+0%
|
| Forza Horizon 4 | 75−80
+0%
|
75−80
+0%
|
| Forza Horizon 5 | 36
+0%
|
36
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 55−60
+0%
|
55−60
+0%
|
4K
Epic Preset
| Fortnite | 50−55
+0%
|
50−55
+0%
|
This is how GTX 660 OEM and RX 6600 XT compete in popular games:
- RX 6600 XT is 1220% faster in 1080p
- RX 6600 XT is 1400% faster in 1440p
- RX 6600 XT is 1333% faster in 4K
All in all, in popular games:
- there's a draw in 67 tests (100%)
Pros & cons summary
| Performance score | 3.29 | 41.90 |
| Recency | 22 August 2012 | 30 July 2021 |
| Maximum RAM amount | 2 GB | 8 GB |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 130 Watt | 160 Watt |
GTX 660 OEM has 23.1% lower power consumption.
RX 6600 XT, on the other hand, has a 1173.6% higher aggregate performance score, an age advantage of 8 years, a 300% higher maximum VRAM amount, and a 300% more advanced lithography process.
The Radeon RX 6600 XT is our recommended choice as it beats the GeForce GTX 660 OEM 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.
