GeForce 840M vs Radeon HD 6450A
We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 512MB VRAM Radeon HD 6450A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce 840M Advantages
Released 2 years and 11 months late
Boost Clock1124MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (16.02GB/s vs 8.528GB/s)
224 additional rendering cores
Radeon HD 6450A Advantages
Lower TDP (25W vs 33W)
Score
Benchmark
FP32 (float)
GeForce 840M
+331%
863
Radeon HD 6450A
200
Graphics Card
Mar 2014
Release Date
Apr 2011
GeForce 800M
Generation
All-In-One
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
MXM-A (3.0)
Clock Speeds
1029 MHz
Base Clock
-
1124 MHz
Boost Clock
-
1001 MHz
Memory Clock
533 MHz
Memory
2GB
Memory Size
512MB
DDR3
Memory Type
DDR3
64bit
Memory Bus
64bit
16.02GB/s
Bandwidth
8.528GB/s
Render Config
-
Compute Units
2
384
Shading Units
160
16
TMUs
8
8
ROPs
4
64 KB (per SMM)
L1 Cache
8 KB (per CU)
1024 KB
L2 Cache
128 KB
Theoretical Performance
8.992 GPixel/s
Pixel Rate
2.500 GPixel/s
17.98 GTexel/s
Texture Rate
5.000 GTexel/s
863.2 GFLOPS
FP32 (float)
200.0 GFLOPS
26.98 GFLOPS
FP64 (double)
-
Board Design
33W
TDP
25W
No outputs
Outputs
No outputs
Graphics Processor
GM108
GPU Name
Caicos
N15S-GT
GPU Variant
-
Maxwell
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
Unknown
Transistors
0.37 billion
Unknown
Die Size
67 mm²
Graphics Features
12 (11_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.3
Vulkan
N/A
5.0
CUDA
-
5.1
Shader Model
5.0