Radeon RX 6600 XT vs GeForce GTX 660 OEM

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GTX 645 OEM GTX 650 GTX 650 Ti GTX 650 Ti Boost GTX 660 GTX 660 OEM GTX 660 Rev. 2 GTX 660 Ti GTX 670 GTX 680 GTX 690 GTX 750 Ti
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Radeon RX 6400 Radeon RX 6500 XT Radeon RX 6600 Radeon RX 6600 LE Radeon RX 6600 XT Radeon RX 6650 XT Radeon RX 6700 XT Radeon RX 6750 XT Radeon RX 6800 Radeon RX 6800 XT Radeon RX 6900 XT Radeon RX 6950 XT

Aggregate performance score

We've compared GeForce GTX 660 OEM and Radeon RX 6600 XT, covering specs and all relevant benchmarks.

GTX 660 OEM
2012
2 GB GDDR5, 130 Watt
3.36

RX 6600 XT outperforms GTX 660 OEM by a whopping 1174% based on our aggregate benchmark results.

Contents

GTX 660 OEM GTX 660 OEM
RX 6600 XT RX 6600 XT

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking73190
Place by popularitynot in top-10087
Cost-effectiveness evaluationno data63.51
Power efficiency1.7918.52
ArchitectureKepler (2012−2018)RDNA 2.0 (2020−2024)
GPU code nameGK104Navi 23
Market segmentDesktopDesktop
Release date22 August 2012 (12 years ago)30 July 2021 (3 years ago)
Launch price (MSRP)no data$379

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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 cores11522048
Core clock speed823 MHz1968 MHz
Boost clock speed888 MHz2589 MHz
Number of transistors3,540 million11,060 million
Manufacturing process technology28 nm7 nm
Power consumption (TDP)130 Watt160 Watt
Texture fill rate85.25331.4
Floating-point processing power2.046 TFLOPS10.6 TFLOPS
ROPs3264
TMUs96128
Ray Tracing Coresno data32

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).

InterfacePCIe 3.0 x16PCIe 4.0 x8
Length241 mm190 mm
Width2-slot2-slot
Supplementary power connectors1x 6-pin1x 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 typeGDDR5GDDR6
Maximum RAM amount2 GB8 GB
Memory bus width256 Bit128 Bit
Memory clock speed1400 MHz2000 MHz
Memory bandwidth179.2 GB/s256.0 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 Connectors2x DVI, 1x HDMI, 1x DisplayPort1x HDMI, 2x DisplayPort
HDMI++

API compatibility

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

DirectX12 (11_0)12.0 Ultimate (12_2)
Shader Model5.16.5
OpenGL4.64.6
OpenCL1.22.1
Vulkan1.1.1261.2
CUDA3.0-

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 HD10−12
−1240%
134
+1240%
1440p6−7
−1200%
78
+1200%
4K3−4
−1300%
42
+1300%

Cost per frame, $

1080pno data2.83
1440pno data4.86
4Kno data9.02

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 79
+0%
79
+0%

Full HD
Medium Preset

Assassin's Creed Odyssey 90−95
+0%
90−95
+0%
Assassin's Creed Valhalla 129
+0%
129
+0%
Battlefield 5 130−140
+0%
130−140
+0%
Call of Duty: Modern Warfare 85−90
+0%
85−90
+0%
Cyberpunk 2077 78
+0%
78
+0%
Far Cry 5 90−95
+0%
90−95
+0%
Far Cry New Dawn 100−110
+0%
100−110
+0%
Forza Horizon 4 190−200
+0%
190−200
+0%
Hitman 3 108
+0%
108
+0%
Horizon Zero Dawn 170−180
+0%
170−180
+0%
Metro Exodus 130−140
+0%
130−140
+0%
Red Dead Redemption 2 95−100
+0%
95−100
+0%
Shadow of the Tomb Raider 150−160
+0%
150−160
+0%
Watch Dogs: Legion 130−140
+0%
130−140
+0%

Full HD
High Preset

Assassin's Creed Odyssey 90−95
+0%
90−95
+0%
Assassin's Creed Valhalla 106
+0%
106
+0%
Battlefield 5 130−140
+0%
130−140
+0%
Call of Duty: Modern Warfare 85−90
+0%
85−90
+0%
Cyberpunk 2077 76
+0%
76
+0%
Far Cry 5 90−95
+0%
90−95
+0%
Far Cry New Dawn 100−110
+0%
100−110
+0%
Forza Horizon 4 190−200
+0%
190−200
+0%
Hitman 3 108
+0%
108
+0%
Horizon Zero Dawn 170−180
+0%
170−180
+0%
Metro Exodus 130−140
+0%
130−140
+0%
Red Dead Redemption 2 95−100
+0%
95−100
+0%
Shadow of the Tomb Raider 209
+0%
209
+0%
The Witcher 3: Wild Hunt 85−90
+0%
85−90
+0%
Watch Dogs: Legion 130−140
+0%
130−140
+0%

Full HD
Ultra Preset

Assassin's Creed Odyssey 90−95
+0%
90−95
+0%
Assassin's Creed Valhalla 75
+0%
75
+0%
Call of Duty: Modern Warfare 85−90
+0%
85−90
+0%
Cyberpunk 2077 69
+0%
69
+0%
Far Cry 5 90−95
+0%
90−95
+0%
Forza Horizon 4 190−200
+0%
190−200
+0%
Hitman 3 100
+0%
100
+0%
Horizon Zero Dawn 157
+0%
157
+0%
Shadow of the Tomb Raider 183
+0%
183
+0%
The Witcher 3: Wild Hunt 99
+0%
99
+0%
Watch Dogs: Legion 61
+0%
61
+0%

Full HD
Epic Preset

Red Dead Redemption 2 95−100
+0%
95−100
+0%

1440p
High Preset

Battlefield 5 80−85
+0%
80−85
+0%
Far Cry New Dawn 65−70
+0%
65−70
+0%

1440p
Ultra Preset

Assassin's Creed Odyssey 45−50
+0%
45−50
+0%
Assassin's Creed Valhalla 56
+0%
56
+0%
Call of Duty: Modern Warfare 50−55
+0%
50−55
+0%
Cyberpunk 2077 40
+0%
40
+0%
Far Cry 5 45−50
+0%
45−50
+0%
Forza Horizon 4 230−240
+0%
230−240
+0%
Hitman 3 67
+0%
67
+0%
Horizon Zero Dawn 116
+0%
116
+0%
Metro Exodus 98
+0%
98
+0%
Shadow of the Tomb Raider 118
+0%
118
+0%
The Witcher 3: Wild Hunt 60−65
+0%
60−65
+0%
Watch Dogs: Legion 200−210
+0%
200−210
+0%

1440p
Epic Preset

Red Dead Redemption 2 70−75
+0%
70−75
+0%

4K
High Preset

Battlefield 5 40−45
+0%
40−45
+0%
Far Cry New Dawn 35−40
+0%
35−40
+0%
Hitman 3 33
+0%
33
+0%
Horizon Zero Dawn 190−200
+0%
190−200
+0%
Metro Exodus 55−60
+0%
55−60
+0%
The Witcher 3: Wild Hunt 54
+0%
54
+0%

4K
Ultra Preset

Assassin's Creed Odyssey 30−33
+0%
30−33
+0%
Assassin's Creed Valhalla 28
+0%
28
+0%
Call of Duty: Modern Warfare 27−30
+0%
27−30
+0%
Cyberpunk 2077 14
+0%
14
+0%
Far Cry 5 24−27
+0%
24−27
+0%
Forza Horizon 4 60−65
+0%
60−65
+0%
Shadow of the Tomb Raider 61
+0%
61
+0%
Watch Dogs: Legion 24
+0%
24
+0%

4K
Epic Preset

Red Dead Redemption 2 35−40
+0%
35−40
+0%

This is how GTX 660 OEM and RX 6600 XT compete in popular games:

  • RX 6600 XT is 1240% faster in 1080p
  • RX 6600 XT is 1200% faster in 1440p
  • RX 6600 XT is 1300% faster in 4K

All in all, in popular games:

  • there's a draw in 72 tests (100%)

Pros & cons summary

Performance score 3.36 42.79
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 1173.5% 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.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.

NVIDIA GeForce GTX 660 OEM
GeForce GTX 660 OEM
AMD Radeon RX 6600 XT
Radeon RX 6600 XT
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Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

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GTX 650 Ti GeForce GTX 650 Ti
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Arc Pro A40 Arc Pro A40
GTX TITAN GeForce GTX TITAN
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RX 6650M XT Radeon RX 6650M XT
GTX 660 OEM GeForce GTX 660 OEM
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GT 520 OEM GeForce GT 520 OEM
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GeForce2 GTS GeForce2 GTS
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R9 M370X Mac Edition Radeon R9 M370X Mac Edition
GTX 670 GeForce GTX 670
vs
FX 3700M Quadro FX 3700M

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.

3.8 34 votes

Rate GeForce GTX 660 OEM on a scale of 1 to 5:

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4.3 4197 votes

Rate Radeon RX 6600 XT on a scale of 1 to 5:

  • 1
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  • 5

Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.