NVIDIA GeForce GT 820M vs AMD Radeon HD 8670A
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 1024MB VRAM Radeon HD 8670A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 820M 's Advantages
Released 9 months late
Lower TDP (15W vs 45W)
AMD Radeon HD 8670A 's Advantages
Larger VRAM bandwidth (16.00GB/s vs 14.40GB/s)
288 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 820M
0.298 TFLOPS
Radeon HD 8670A
+54%
0.461 TFLOPS
Graphics Card
Nov 2013
Release Date
Feb 2013
GeForce 800M
Generation
All-In-One
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
MXM-A (3.0)
Clock Speeds
-
-
-
-
-
-
900 MHz
Memory Clock
1000 MHz
Memory
1024MB
Memory Size
1024MB
DDR3
Memory Type
DDR3
64bit
Memory Bus
64bit
14.40GB/s
Bandwidth
16.00GB/s
Render Config
-
Compute Units
6
2
SM Count
-
96
Shading Units
384
16
TMUs
24
8
ROPs
8
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
3.100 GPixel/s
Pixel Rate
4.800 GPixel/s
12.40 GTexel/s
Texture Rate
14.40 GTexel/s
-
-
-
297.6 GFLOPS
FP32 (float)
460.8 GFLOPS
24.80 GFLOPS
FP64 (double)
28.80 GFLOPS
Board Design
15W
TDP
45W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GF117
GPU Name
Mars
N15V-GM
GPU Variant
Mars XT
Fermi 2.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
0.585 billion
Transistors
0.95 billion
116 mm²
Die Size
77 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.1
OpenCL
1.2
N/A
Vulkan
1.2
2.1
CUDA
-
5.1
Shader Model
5.1
