NVIDIA GeForce GTX 680MX Mac Edition vs NVIDIA GeForce 8400M G
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition and 256MB VRAM GeForce 8400M G to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
Released 5 years and 5 months late
More VRAM (2GB vs 256GB)
Larger VRAM bandwidth (160.0GB/s vs 6.400GB/s)
1528 additional rendering cores
NVIDIA GeForce 8400M G 's Advantages
Lower TDP (10W vs 122W)
Score
Benchmark
FP32 (float)
GeForce GTX 680MX Mac Edition
+16892%
2.209 TFLOPS
GeForce 8400M G
0.013 TFLOPS
Graphics Card
Oct 2012
Release Date
May 2007
GeForce 600M
Generation
GeForce 8M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
400 MHz
Memory
2GB
Memory Size
256MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
6.400GB/s
Render Config
-
-
-
-
SM Count
1
1536
Shading Units
8
128
TMUs
8
32
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
512 KB
L2 Cache
16 KB
-
-
-
Theoretical Performance
23.01 GPixel/s
Pixel Rate
1.600 GPixel/s
92.03 GTexel/s
Texture Rate
3.200 GTexel/s
-
-
-
2.209 TFLOPS
FP32 (float)
12.80 GFLOPS
92.03 GFLOPS
FP64 (double)
-
Board Design
122W
TDP
10W
-
-
-
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Processor
GK104
GPU Name
G86
N13E-GTX2-A2
GPU Variant
NB8M-SE
Kepler
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
3.54 billion
Transistors
0.21 billion
294 mm²
Die Size
127 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.1
5.1
Shader Model
4.0
