NVIDIA GeForce 840M vs ATI Mobility Radeon HD 4860
We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 1024MB VRAM Mobility Radeon HD 4860 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 840M 's Advantages
Released 5 years late
Boost Clock1124MHz
More VRAM (2GB vs 1024GB)
ATI Mobility Radeon HD 4860 's Advantages
Larger VRAM bandwidth (64.00GB/s vs 16.02GB/s)
256 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 840M
+3%
0.863 TFLOPS
Mobility Radeon HD 4860
0.832 TFLOPS
Graphics Card
Mar 2014
Release Date
Mar 2009
GeForce 800M
Generation
M9x
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
1029 MHz
Base Clock
-
1124 MHz
Boost Clock
-
1001 MHz
Memory Clock
1000 MHz
Memory
2GB
Memory Size
1024MB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
128bit
16.02GB/s
Bandwidth
64.00GB/s
Render Config
-
Compute Units
8
-
-
-
384
Shading Units
640
16
TMUs
32
8
ROPs
16
-
-
-
-
-
-
64 KB (per SMM)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
8.992 GPixel/s
Pixel Rate
10.40 GPixel/s
17.98 GTexel/s
Texture Rate
20.80 GTexel/s
-
-
-
863.2 GFLOPS
FP32 (float)
832.0 GFLOPS
26.98 GFLOPS
FP64 (double)
166.4 GFLOPS
Board Design
33W
TDP
Unknown
-
-
-
No outputs
Outputs
Portable Device Dependent
-
Power Connectors
None
Graphics Processor
GM108
GPU Name
M97
N15S-GT
GPU Variant
M97 M2 XT
(216-0731000)
Maxwell
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
Unknown
Transistors
0.826 billion
Unknown
Die Size
137 mm²
Graphics Features
12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.3
Vulkan
N/A
5.0
CUDA
-
5.1
Shader Model
4.1
