AMD Radeon Pro W6800X Duo vs NVIDIA GeForce GTX 660 Rev. 2
GPU · Specs Compare
Graphics Card
Release Date
Aug 2021
Sep 2014
Generation
Radeon Pro Mac
GeForce 600
Type
Desktop
Desktop
Bus Interface
Apple MPX
PCIe 3.0 x16
Clock Speeds
Base Clock
1800 MHz
980 MHz
Boost Clock
1967 MHz
1032 MHz
Memory Clock
2000 MHz
1502 MHz
Memory
Memory Size
32GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
192bit
Bandwidth
512.0GB/s
144.2GB/s
Render Config
Compute Units
60
—
Shading Units
3840
960
TMUs
240
80
ROPs
96
24
RT Cores
60
—
L1 Cache
128 KB per Array
16 KB (per SMX)
L2 Cache
4 MB
384 KB
L3 Cache
128 MB
—
Theoretical Performance
Pixel Rate
188.8 GPixel/s
20.64 GPixel/s
Texture Rate
472.1 GTexel/s
82.56 GTexel/s
FP16 (half)
30.21 TFLOPS
—
FP32 (float)
15.11 TFLOPS
1.981 TFLOPS
FP64 (double)
944.2 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
Navi 21
GK104
GPU Variant
Navi 21 Pro-XLA
—
Architecture
RDNA 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
26.8 billion
3.54 billion
Die Size
520 mm²
294 mm²
Board Design
TDP
400W
140W
Suggested PSU
800 W
300 W
Outputs
1x HDMI 2.14x Thunderbolt
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.3
1.1
Shader Model
6.7
5.1
CUDA
—
3.0
Benchmark
Blender
1,422
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.