NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon E8870

GPU · Specs Compare

Products
GPU NVIDIA GeForce GTX 660 Rev. 2 NVIDIA · 2014-09
GPU AMD Radeon E8870 AMD · 2015-09
Graphics Card
Release Date
Sep 2014
Sep 2015
Generation
GeForce 600
Embedded
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
980 MHz
—
Boost Clock
1032 MHz
—
Memory Clock
1502 MHz
1500 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
128bit
Bandwidth
144.2GB/s
96.00GB/s
Render Config
Shading Units
960
768
TMUs
80
48
ROPs
24
16
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
256 KB
Compute Units
—
12
Theoretical Performance
Pixel Rate
20.64 GPixel/s
16.00 GPixel/s
Texture Rate
82.56 GTexel/s
48.00 GTexel/s
FP32 (float)
1.981 TFLOPS
1.536 TFLOPS
FP64 (double)
82.56 GFLOPS
96.00 GFLOPS
Graphics Processor
GPU Name
GK104
Saturn
Architecture
Kepler
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
2.08 billion
Die Size
294 mm²
160 mm²
GPU Variant
—
Saturn PRO
Board Design
TDP
140W
75W
Suggested PSU
300 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
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
▲ Specs Compare Data sourced from official specifications and benchmark tests.