NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon R9 285X
GPU Specs Compare
Graphics Card
Release Date
Sep 2014
Unknown
Generation
GeForce 600
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
980 MHz
-
Boost Clock
1032 MHz
-
Memory Clock
1502 MHz
1375 MHz
Memory
Memory Size
2GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
384bit
Bandwidth
144.2GB/s
264.0GB/s
Render Config
Shading Units
960
2048
TMUs
80
128
ROPs
24
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
768 KB
Compute Units
-
32
Theoretical Performance
Pixel Rate
20.64 GPixel/s
32.06 GPixel/s
Texture Rate
82.56 GTexel/s
128.3 GTexel/s
FP32 (float)
1.981 TFLOPS
4.104 TFLOPS
FP64 (double)
82.56 GFLOPS
-
Graphics Processor
GPU Name
GK104
Tonga
Architecture
Kepler
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
5 billion
Die Size
294 mm²
366 mm²
GPU Variant
-
Tonga XT(215-0851313)
Board Design
TDP
140W
200W
Suggested PSU
300 W
550 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (11_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.0
Vulkan
1.1
1.2
CUDA
3.0
-
Shader Model
5.1
6.3