NVIDIA GeForce GTX 660 Ti vs AMD Radeon R9 M295X Mac Edition
GPU Specs Compare
Graphics Card
Release Date
Aug 2012
Nov 2014
Generation
GeForce 600
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
915 MHz
-
Boost Clock
980 MHz
-
Memory Clock
1502 MHz
1362 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
144.2GB/s
174.3GB/s
Render Config
Shading Units
1344
2048
TMUs
112
128
ROPs
24
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
512 KB
Compute Units
-
32
Theoretical Performance
Pixel Rate
27.44 GPixel/s
27.20 GPixel/s
Texture Rate
109.8 GTexel/s
108.8 GTexel/s
FP32 (float)
2.634 TFLOPS
3.482 TFLOPS
FP64 (double)
109.8 GFLOPS
217.6 GFLOPS
FP16 (half)
-
3.482 TFLOPS
Graphics Processor
GPU Name
GK104
Amethyst
GPU Variant
GK104-300-KD-A2
Amethyst XT
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
Board Design
TDP
150W
250W
Suggested PSU
450 W
-
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
2x 6-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