AMD Radeon E8870 vs NVIDIA GeForce GTX 660 Ti
GPU · Specs Compare
Graphics Card
Release Date
Sep 2015
Aug 2012
Generation
Embedded
GeForce 600
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Memory Clock
1500 MHz
1502 MHz
Base Clock
—
915 MHz
Boost Clock
—
980 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
192bit
Bandwidth
96.00GB/s
144.2GB/s
Render Config
Compute Units
12
—
Shading Units
768
1344
TMUs
48
112
ROPs
16
24
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
256 KB
384 KB
Theoretical Performance
Pixel Rate
16.00 GPixel/s
27.44 GPixel/s
Texture Rate
48.00 GTexel/s
109.8 GTexel/s
FP32 (float)
1.536 TFLOPS
2.634 TFLOPS
FP64 (double)
96.00 GFLOPS
109.8 GFLOPS
Graphics Processor
GPU Name
Saturn
GK104
GPU Variant
Saturn PRO
GK104-300-KD-A2
Architecture
GCN 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.08 billion
3.54 billion
Die Size
160 mm²
294 mm²
Board Design
TDP
75W
150W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
2x 6-pin
Suggested PSU
—
450 W
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
▲ Specs Compare
Data sourced from official specifications and benchmark tests.