NVIDIA GeForce GT 820M vs ATI Mobility Radeon HD 3670
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 256MB VRAM Mobility Radeon HD 3670 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 820M 's Advantages
Released 5 years and 10 months late
More VRAM (1024GB vs 256GB)
Lower TDP (15W vs 30W)
ATI Mobility Radeon HD 3670 's Advantages
Larger VRAM bandwidth (25.60GB/s vs 14.40GB/s)
24 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 820M
+82%
0.298 TFLOPS
Mobility Radeon HD 3670
0.163 TFLOPS
Graphics Card
Nov 2013
Release Date
Jan 2008
GeForce 800M
Generation
M8x
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
900 MHz
Memory Clock
800 MHz
Memory
1024MB
Memory Size
256MB
DDR3
Memory Type
GDDR3
64bit
Memory Bus
128bit
14.40GB/s
Bandwidth
25.60GB/s
Render Config
-
Compute Units
3
2
SM Count
-
96
Shading Units
120
16
TMUs
8
8
ROPs
4
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
-
128 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
3.100 GPixel/s
Pixel Rate
2.720 GPixel/s
12.40 GTexel/s
Texture Rate
5.440 GTexel/s
-
-
-
297.6 GFLOPS
FP32 (float)
163.2 GFLOPS
24.80 GFLOPS
FP64 (double)
-
Board Design
15W
TDP
30W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GF117
GPU Name
M86
N15V-GM
GPU Variant
-
Fermi 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
0.585 billion
Transistors
0.378 billion
116 mm²
Die Size
135 mm²
Graphics Features
12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.1
OpenCL
N/A
N/A
Vulkan
N/A
2.1
CUDA
-
5.1
Shader Model
4.1
