AMD Radeon RX 560 XT vs NVIDIA GeForce GTX 660 Rev. 2
GPU · Specs Compare
Graphics Card
Release Date
Mar 2019
Sep 2014
Generation
Polaris
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1074 MHz
980 MHz
Boost Clock
1226 MHz
1032 MHz
Memory Clock
1750 MHz
1502 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
192bit
Bandwidth
224.0GB/s
144.2GB/s
Render Config
Compute Units
28
—
Shading Units
1792
960
TMUs
112
80
ROPs
32
24
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
2 MB
384 KB
Theoretical Performance
Pixel Rate
39.23 GPixel/s
20.64 GPixel/s
Texture Rate
137.3 GTexel/s
82.56 GTexel/s
FP16 (half)
4.394 TFLOPS
—
FP32 (float)
4.394 TFLOPS
1.981 TFLOPS
FP64 (double)
274.6 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
Ellesmere
GK104
GPU Variant
Polaris 10 LE1
—
Architecture
GCN 4.0
Kepler
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
28 nm
Transistors
5.7 billion
3.54 billion
Die Size
232 mm²
294 mm²
Board Design
TDP
150W
140W
Suggested PSU
450 W
300 W
Outputs
1x HDMI 2.0b3x DisplayPort 1.4a
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin
1x 6-pin
Graphics Features
DirectX
12 (12_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.2
1.1
Shader Model
6.4
5.1
CUDA
—
3.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.