NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon HD 5870
GPU Specs Compare
Graphics Card
Release Date
Sep 2014
Sep 2009
Generation
GeForce 600
Evergreen
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
980 MHz
-
Boost Clock
1032 MHz
-
Memory Clock
1502 MHz
1200 MHz
Memory
Memory Size
2GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
144.2GB/s
153.6GB/s
Render Config
Shading Units
960
1600
TMUs
80
80
ROPs
24
32
L1 Cache
16 KB (per SMX)
8 KB (per CU)
L2 Cache
384 KB
512 KB
Compute Units
-
20
Theoretical Performance
Pixel Rate
20.64 GPixel/s
27.20 GPixel/s
Texture Rate
82.56 GTexel/s
68.00 GTexel/s
FP32 (float)
1.981 TFLOPS
2.720 TFLOPS
FP64 (double)
82.56 GFLOPS
544.0 GFLOPS
Graphics Processor
GPU Name
GK104
Cypress
Architecture
Kepler
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
3.54 billion
2.154 billion
Die Size
294 mm²
334 mm²
GPU Variant
-
Cypress XT(215-0735033)
Board Design
TDP
140W
188W
Suggested PSU
300 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
1x 6-pin
2x 6-pin
Graphics Features
DirectX
12 (11_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.1
N/A
CUDA
3.0
-
Shader Model
5.1
5.0