AMD Radeon R9 380 OEM vs NVIDIA GeForce GTX 660 Rev. 2
GPU Specs Compare
Graphics Card
Release Date
May 2015
Sep 2014
Generation
Pirate Islands
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1375 MHz
1502 MHz
Base Clock
-
980 MHz
Boost Clock
-
1032 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
192bit
Bandwidth
176.0GB/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
512 KB
384 KB
Theoretical Performance
Pixel Rate
29.38 GPixel/s
20.64 GPixel/s
Texture Rate
102.8 GTexel/s
82.56 GTexel/s
FP16 (half)
3.290 TFLOPS
-
FP32 (float)
3.290 TFLOPS
1.981 TFLOPS
FP64 (double)
205.6 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
Antigua
GK104
GPU Variant
Antigua PRO(215-0877000)
-
Architecture
GCN 3.0
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
3.54 billion
Die Size
366 mm²
294 mm²
Board Design
TDP
190W
140W
Suggested PSU
450 W
300 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 6-pin
1x 6-pin
Graphics Features
DirectX
12 (12_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.0
3.0
Vulkan
1.2
1.1
Shader Model
6.3
5.1
CUDA
-
3.0