AMD Radeon R9 Nano vs NVIDIA GeForce GTX 660
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 Nano and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 Nano 's Advantages
Released 2 years and 11 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 144.2GB/s)
3136 additional rendering cores
NVIDIA GeForce GTX 660 's Advantages
Boost Clock1032MHz
Lower TDP (140W vs 175W)
Score
Benchmark
FP32 (float)
Radeon R9 Nano
+313%
8.192 TFLOPS
GeForce GTX 660
1.981 TFLOPS
3DMark Time Spy
Radeon R9 Nano
+291%
4677
GeForce GTX 660
1194
3DMark Time Spy Extreme
Radeon R9 Nano
+742%
2191
GeForce GTX 660
260
Graphics Card
Aug 2015
Release Date
Sep 2012
Pirate Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
980 MHz
-
Boost Clock
1032 MHz
500 MHz
Memory Clock
1502 MHz
Memory
4GB
Memory Size
2GB
HBM
Memory Type
GDDR5
4096bit
Memory Bus
192bit
512.0GB/s
Bandwidth
144.2GB/s
Render Config
64
Compute Units
-
-
-
-
4096
Shading Units
960
256
TMUs
80
64
ROPs
24
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
2 MB
L2 Cache
384 KB
-
-
-
Theoretical Performance
64.00 GPixel/s
Pixel Rate
20.64 GPixel/s
256.0 GTexel/s
Texture Rate
82.56 GTexel/s
8.192 TFLOPS
FP16 (half)
-
8.192 TFLOPS
FP32 (float)
1.981 TFLOPS
512.0 GFLOPS
FP64 (double)
82.56 GFLOPS
Board Design
175W
TDP
140W
450 W
Suggested PSU
300 W
1x HDMI 1.4a
3x DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
Fiji
GPU Name
GK106
Fiji XT CA
(215-0862120)
GPU Variant
GK106-400-A1
GCN 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
8.9 billion
Transistors
2.54 billion
596 mm²
Die Size
221 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
6.3
Shader Model
5.1
