Home GPU Comparison NVIDIA GeForce 840A vs AMD Radeon E8870

NVIDIA GeForce 840A vs AMD Radeon E8870

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 4GB VRAM Radeon E8870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages
Boost Clock1124MHz
Lower TDP (33W vs 75W)
AMD Radeon E8870 's Advantages
Released 1 years and 6 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (96.00GB/s vs 16.02GB/s)
384 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce 840A
0.863 TFLOPS
Radeon E8870 +77%
1.536 TFLOPS
VS

Graphics Card

Mar 2014
Release Date
Sep 2015
GeForce 800A
Generation
Embedded
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
MXM-B (3.0)

Clock Speeds

1029 MHz
Base Clock
-
1124 MHz
Boost Clock
-
1001 MHz
Memory Clock
1500 MHz

Memory

2GB
Memory Size
4GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
128bit
16.02GB/s
Bandwidth
96.00GB/s

Render Config

-
SM Count
-
-
Compute Units
12
384
Shading Units
768
16
TMUs
48
8
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SMM)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
256 KB

Theoretical Performance

8.992 GPixel/s
Pixel Rate
16.00 GPixel/s
17.98 GTexel/s
Texture Rate
48.00 GTexel/s
-
FP16 (half)
-
863.2 GFLOPS
FP32 (float)
1.536 TFLOPS
26.98 GFLOPS
FP64 (double)
96.00 GFLOPS

Graphics Processor

GM108
GPU Name
Saturn
-
GPU Variant
Saturn PRO
Maxwell
Architecture
GCN 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
Unknown
Transistors
2.08 billion
Unknown
Die Size
160 mm²

Board Design

33W
TDP
75W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
None

Graphics Features

12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.0
1.3
Vulkan
1.2
5.0
CUDA
-
5.1
Shader Model
6.3

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