NVIDIA GeForce GTX 660 OEM vs AMD Radeon RX 7700
GPU Specs Compare
Graphics Card
Release Date
Aug 2012
Sep 2025
Generation
GeForce 600
Navi III
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
823 MHz
1900 MHz
Boost Clock
888 MHz
2600 MHz
Memory Clock
1400 MHz
2430 MHz
Memory
Memory Size
1536MB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
192bit
256bit
Bandwidth
134.4GB/s
622.1GB/s
Render Config
Shading Units
1152
2560
TMUs
96
160
ROPs
24
96
L1 Cache
16 KB (per SMX)
128 KB per Array
L2 Cache
384 KB
2 MB
Compute Units
-
40
RT Cores
-
40
L3 Cache
-
64 MB
Theoretical Performance
Pixel Rate
21.31 GPixel/s
249.6 GPixel/s
Texture Rate
85.25 GTexel/s
416.0 GTexel/s
FP32 (float)
2.046 TFLOPS
26.62 TFLOPS
FP64 (double)
85.25 GFLOPS
832.0 GFLOPS
FP16 (half)
-
53.25 TFLOPS
Graphics Processor
GPU Name
GK104
Navi 32
GPU Variant
GK104-200-KD-A2
Navi 32
Architecture
Kepler
RDNA 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
5 nm
Transistors
3.54 billion
28.1 billion
Die Size
294 mm²
346 mm²
Board Design
TDP
130W
200W
Suggested PSU
300 W
550 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.1a2x DisplayPort 2.11x USB Type-C
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
2.2
Vulkan
1.1
1.3
CUDA
3.0
-
Shader Model
5.1
6.8
📊 Benchmark
3DMark Time Spy
1,194
-
3DMark Time Spy Extreme
260
-