NVIDIA GeForce GTX 660M vs ATI Mobility Radeon HD 4850 Mac Edition
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GTX 660M and 512MB VRAM Mobility Radeon HD 4850 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660M 's Advantages
Released 2 years and 7 months late
Boost Clock950MHz
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (64.00GB/s vs 54.40GB/s)
ATI Mobility Radeon HD 4850 Mac Edition 's Advantages
416 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 660M
0.73 TFLOPS
Mobility Radeon HD 4850 Mac Edition
+10%
0.804 TFLOPS
Graphics Card
Mar 2012
Release Date
Aug 2009
GeForce 600M
Generation
M9x
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-B (3.0)
Clock Speeds
835 MHz
Base Clock
-
950 MHz
Boost Clock
-
1000 MHz
Memory Clock
850 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
128bit
Memory Bus
256bit
64.00GB/s
Bandwidth
54.40GB/s
Render Config
-
Compute Units
10
-
-
-
384
Shading Units
800
32
TMUs
40
16
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
8.048 GPixel/s
30.40 GTexel/s
Texture Rate
20.12 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
804.8 GFLOPS
30.40 GFLOPS
FP64 (double)
161.0 GFLOPS
Board Design
50W
TDP
Unknown
-
-
-
No outputs
Outputs
Portable Device Dependent
-
Power Connectors
None
Graphics Processor
GK107
GPU Name
M98
N13E-GE-A2
GPU Variant
M98 L2
(216-0732019)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.956 billion
118 mm²
Die Size
256 mm²
Graphics Features
12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
4.1
