NVIDIA GeForce GTX 660M Mac Edition vs AMD Radeon E9550 MXM
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 8GB VRAM Radeon E9550 MXM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660M Mac Edition 's Advantages
Lower TDP (50W vs 95W)
AMD Radeon E9550 MXM 's Advantages
Released 3 years and 5 months late
Boost Clock1266MHz
More VRAM (8GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 80.00GB/s)
1920 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
0.73 TFLOPS
Radeon E9550 MXM
+699%
5.834 TFLOPS
Graphics Card
Apr 2013
Release Date
Sep 2016
GeForce 600M
Generation
Embedded
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
1120 MHz
-
Boost Clock
1266 MHz
1250 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
8GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
80.00GB/s
Bandwidth
160.0GB/s
Render Config
-
Compute Units
36
-
-
-
384
Shading Units
2304
32
TMUs
144
16
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
2 MB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
40.51 GPixel/s
30.40 GTexel/s
Texture Rate
182.3 GTexel/s
-
FP16 (half)
5.834 TFLOPS
729.6 GFLOPS
FP32 (float)
5.834 TFLOPS
30.40 GFLOPS
FP64 (double)
364.6 GFLOPS
Board Design
50W
TDP
95W
-
-
-
No outputs
Outputs
1x HDMI 2.0b
3x DisplayPort 1.4a
None
Power Connectors
None
Graphics Processor
GK107
GPU Name
Ellesmere
-
GPU Variant
Ellesmere XT
Kepler
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
28 nm
Process Size
14 nm
1.27 billion
Transistors
5.7 billion
118 mm²
Die Size
232 mm²
Graphics Features
12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.1
1.1
Vulkan
1.2
3.0
CUDA
-
5.1
Shader Model
6.4
