NVIDIA GeForce GTX 660 vs AMD Radeon RX 6600 XT
GPU · Specs Compare
Graphics Card
Release Date
Sep 2012
Jul 2021
Generation
GeForce 600
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
980 MHz
1968 MHz
Boost Clock
1032 MHz
2589 MHz
Memory Clock
1502 MHz
2000 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR6
Memory Bus
192bit
128bit
Bandwidth
144.2GB/s
256.0GB/s
Render Config
Shading Units
960
2048
TMUs
80
128
ROPs
24
64
L1 Cache
16 KB (per SMX)
128 KB per Array
L2 Cache
384 KB
2 MB
Compute Units
—
32
RT Cores
—
32
L3 Cache
—
32 MB
Theoretical Performance
Pixel Rate
20.64 GPixel/s
165.7 GPixel/s
Texture Rate
82.56 GTexel/s
331.4 GTexel/s
FP32 (float)
1.981 TFLOPS
10.60 TFLOPS
FP64 (double)
82.56 GFLOPS
662.8 GFLOPS
FP16 (half)
—
21.21 TFLOPS
Graphics Processor
GPU Name
GK106
Navi 23
GPU Variant
GK106-400-A1
Navi 23 XT(215-130000006)
Architecture
Kepler
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
2.54 billion
11.06 billion
Die Size
221 mm²
237 mm²
Board Design
TDP
140W
160W
Suggested PSU
300 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
1x 6-pin
1x 8-pin
Graphics Features
DirectX
12 (11_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.1
1.3
CUDA
3.0
—
Shader Model
5.1
6.7
Benchmark
3DMark Time Spy
1,194
9,656
3DMark Time Spy Extreme
260
4,399
OctaneBench
27
—
Blender
111
1,213
3DMark Speed Way
—
1,675
Battlefield 5 1080p
—
144
Shadow of the Tomb Raider 2160p
—
38
Cyberpunk 2077 2160p
—
29
Shadow of the Tomb Raider 1440p
—
72
Cyberpunk 2077 1440p
—
36
Shadow of the Tomb Raider 1080p
—
119
Battlefield 5 2160p
—
58
Cyberpunk 2077 1080p
—
58
Battlefield 5 1440p
—
111
GTA 5 2160p
—
61
GTA 5 1440p
—
82
GTA 5 1080p
—
149
▲ Specs Compare
Data sourced from official specifications and benchmark tests.