NVIDIA GeForce GTX 660 OEM vs AMD Radeon Pro Duo
GPU · Specs Compare
Graphics Card
Release Date
Aug 2012
Apr 2016
Generation
GeForce 600
Radeon Pro
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
823 MHz
—
Boost Clock
888 MHz
—
Memory Clock
1400 MHz
500 MHz
Memory
Memory Size
1536MB
4GB
Memory Type
GDDR5
HBM
Memory Bus
192bit
4096bit
Bandwidth
134.4GB/s
512.0GB/s
Render Config
Shading Units
1152
4096
TMUs
96
256
ROPs
24
64
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
2 MB
Compute Units
—
64
Theoretical Performance
Pixel Rate
21.31 GPixel/s
64.00 GPixel/s
Texture Rate
85.25 GTexel/s
256.0 GTexel/s
FP32 (float)
2.046 TFLOPS
8.192 TFLOPS
FP64 (double)
85.25 GFLOPS
512.0 GFLOPS
FP16 (half)
—
8.192 TFLOPS
Graphics Processor
GPU Name
GK104
Capsaicin
GPU Variant
GK104-200-KD-A2
Capsaicin XT
Architecture
Kepler
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
8.9 billion
Die Size
294 mm²
596 mm²
Board Design
TDP
130W
350W
Suggested PSU
300 W
750 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 1.4a3x DisplayPort 1.2
Power Connectors
1x 6-pin
3x 8-pin
Graphics Features
DirectX
12 (11_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.0
Vulkan
1.1
1.2
CUDA
3.0
—
Shader Model
5.1
6.0
Benchmark
3DMark Time Spy
1,194
—
3DMark Time Spy Extreme
260
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.