NVIDIA GeForce GTX 660 vs AMD Radeon Pro Vega 64X
GPU · Specs Compare
Graphics Card
Release Date
Sep 2012
Mar 2019
Generation
GeForce 600
Radeon Pro Mac
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
980 MHz
1250 MHz
Boost Clock
1032 MHz
1468 MHz
Memory Clock
1502 MHz
1000 MHz
Memory
Memory Size
2GB
16GB
Memory Type
GDDR5
HBM2
Memory Bus
192bit
2048bit
Bandwidth
144.2GB/s
512.0GB/s
Render Config
Shading Units
960
4096
TMUs
80
256
ROPs
24
64
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
4 MB
Compute Units
—
64
Theoretical Performance
Pixel Rate
20.64 GPixel/s
93.95 GPixel/s
Texture Rate
82.56 GTexel/s
375.8 GTexel/s
FP32 (float)
1.981 TFLOPS
12.03 TFLOPS
FP64 (double)
82.56 GFLOPS
751.6 GFLOPS
FP16 (half)
—
24.05 TFLOPS
Graphics Processor
GPU Name
GK106
Vega 10
GPU Variant
GK106-400-A1
Vega 10 XT(215-0894200)
Architecture
Kepler
GCN 5.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
2.54 billion
12.5 billion
Die Size
221 mm²
495 mm²
Board Design
TDP
140W
250W
Suggested PSU
300 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (11_0)
12 (12_1)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.1
1.2
CUDA
3.0
—
Shader Model
5.1
6.4
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.