NVIDIA GeForce GTX 660 vs AMD Radeon Instinct MI308X
GPU · Specs Compare
Graphics Card
Release Date
Sep 2012
Dec 2023
Generation
GeForce 600
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 3.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
980 MHz
1000 MHz
Boost Clock
1032 MHz
2100 MHz
Memory Clock
1502 MHz
1300 MHz
Memory
Memory Size
2GB
192GB
Memory Type
GDDR5
HBM3
Memory Bus
192bit
8192bit
Bandwidth
144.2GB/s
5.32TB/s
Render Config
Shading Units
960
19456
TMUs
80
1216
ROPs
24
0
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
16 MB
Compute Units
—
304
Tensor Cores
—
1216
L3 Cache
—
256 MB
Theoretical Performance
Pixel Rate
20.64 GPixel/s
0 MPixel/s
Texture Rate
82.56 GTexel/s
2553.6 GTexel/s
FP32 (float)
1.981 TFLOPS
81.72 TFLOPS
FP64 (double)
82.56 GFLOPS
40.86 TFLOPS
FP16 (half)
—
81.72 TFLOPS
Graphics Processor
GPU Name
GK106
Aqua Vanjaram
GPU Variant
GK106-400-A1
—
Architecture
Kepler
CDNA 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
5 nm
Transistors
2.54 billion
153 billion
Die Size
221 mm²
1017 mm²
Board Design
TDP
140W
750W
Suggested PSU
300 W
1150 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (11_0)
N/A
OpenGL
4.6
N/A
OpenCL
3.0
3.0
Vulkan
1.1
N/A
CUDA
3.0
—
Shader Model
5.1
N/A
Benchmark
3DMark Time Spy
1,194
—
3DMark Time Spy Extreme
260
—
OctaneBench
27
—
Blender
111
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.