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GPU Comparison
NVIDIA GeForce GT 820M vs NVIDIA GeForce 8400M GS
NVIDIA GeForce GT 820M vs NVIDIA GeForce 8400M GS
VS
NVIDIA GeForce GT 820M
NVIDIA GeForce 8400M GS
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 256MB VRAM GeForce 8400M GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 820M 's Advantages
Released 6 years and 6 months late
More VRAM (1024GB vs 256GB)
Larger VRAM bandwidth (14.40GB/s vs 6.400GB/s)
80 additional rendering cores
NVIDIA GeForce 8400M GS 's Advantages
Lower TDP (11W vs 15W)
Score
Benchmark
FP32 (float)
GeForce GT 820M
+1046%
0.298 TFLOPS
GeForce 8400M GS
0.026 TFLOPS
GeForce GT 820M
VS
GeForce 8400M GS
Graphics Card
Nov 2013
Release Date
May 2007
GeForce 800M
Generation
GeForce 8M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
MXM-I
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
400 MHz
Memory
1024MB
Memory Size
256MB
DDR3
Memory Type
DDR2
64bit
Memory Bus
64bit
14.40GB/s
Bandwidth
6.400GB/s
Render Config
2
SM Count
2
-
Compute Units
-
96
Shading Units
16
16
TMUs
8
8
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SM)
L1 Cache
-
128 KB
L2 Cache
16 KB
Theoretical Performance
3.100 GPixel/s
Pixel Rate
1.600 GPixel/s
12.40 GTexel/s
Texture Rate
3.200 GTexel/s
-
FP16 (half)
-
297.6 GFLOPS
FP32 (float)
25.60 GFLOPS
24.80 GFLOPS
FP64 (double)
-
Graphics Processor
GF117
GPU Name
G86
N15V-GM
GPU Variant
NB8M-GS
Fermi 2.0
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
0.585 billion
Transistors
0.21 billion
116 mm²
Die Size
127 mm²
Board Design
15W
TDP
11W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
-
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
1.1
OpenCL
1.1
N/A
Vulkan
N/A
2.1
CUDA
1.1
5.1
Shader Model
4.0
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