AMD Radeon R9 285X vs NVIDIA GeForce GTX 660 Rev. 2
GPU Specs Compare
Graphics Card
Release Date
Unknown
Sep 2014
Generation
Volcanic 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
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
192bit
Bandwidth
264.0GB/s
144.2GB/s
Render Config
Compute Units
32
-
Shading Units
2048
960
TMUs
128
80
ROPs
32
24
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
768 KB
384 KB
Theoretical Performance
Pixel Rate
32.06 GPixel/s
20.64 GPixel/s
Texture Rate
128.3 GTexel/s
82.56 GTexel/s
FP32 (float)
4.104 TFLOPS
1.981 TFLOPS
FP64 (double)
-
82.56 GFLOPS
Graphics Processor
GPU Name
Tonga
GK104
GPU Variant
Tonga XT(215-0851313)
-
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
200W
140W
Suggested PSU
550 W
300 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-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