NVIDIA GeForce GTX 660 OEM vs AMD Radeon RX 580X
GPU · Specs Compare
Graphics Card
Release Date
Aug 2012
Apr 2018
Generation
GeForce 600
Polaris
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
823 MHz
1257 MHz
Boost Clock
888 MHz
1340 MHz
Memory Clock
1400 MHz
2000 MHz
Memory
Memory Size
1536MB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
134.4GB/s
256.0GB/s
Render Config
Shading Units
1152
2304
TMUs
96
144
ROPs
24
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
2 MB
Compute Units
—
36
Theoretical Performance
Pixel Rate
21.31 GPixel/s
42.88 GPixel/s
Texture Rate
85.25 GTexel/s
193.0 GTexel/s
FP32 (float)
2.046 TFLOPS
6.175 TFLOPS
FP64 (double)
85.25 GFLOPS
385.9 GFLOPS
FP16 (half)
—
6.175 TFLOPS
Graphics Processor
GPU Name
GK104
Polaris 20
GPU Variant
GK104-200-KD-A2
Polaris 20 XTX(215-0910038)
Architecture
Kepler
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
3.54 billion
5.7 billion
Die Size
294 mm²
232 mm²
Board Design
TDP
130W
185W
Suggested PSU
300 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
1x 6-pin
1x 8-pin
Graphics Features
DirectX
12 (11_0)
12 (12_0)
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
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.