Home GPU Comparison NVIDIA GeForce 840A vs AMD Radeon HD 7970M

NVIDIA GeForce 840A vs AMD Radeon HD 7970M

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 2GB VRAM Radeon HD 7970M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages
Released 1 years and 11 months late
Boost Clock1124MHz
Lower TDP (33W vs 100W)
AMD Radeon HD 7970M 's Advantages
Larger VRAM bandwidth (153.6GB/s vs 16.02GB/s)
896 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce 840A
0.863 TFLOPS
Radeon HD 7970M +152%
2.176 TFLOPS
VS

Graphics Card

Mar 2014
Release Date
Apr 2012
GeForce 800A
Generation
London
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
1200 MHz

Memory

2GB
Memory Size
2GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
256bit
16.02GB/s
Bandwidth
153.6GB/s

Render Config

-
Compute Units
20
-
-
-
384
Shading Units
1280
16
TMUs
80
8
ROPs
32
-
-
-
-
-
-
64 KB (per SMM)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

8.992 GPixel/s
Pixel Rate
27.20 GPixel/s
17.98 GTexel/s
Texture Rate
68.00 GTexel/s
-
-
-
863.2 GFLOPS
FP32 (float)
2.176 TFLOPS
26.98 GFLOPS
FP64 (double)
136.0 GFLOPS

Board Design

33W
TDP
100W
-
-
-
No outputs
Outputs
No outputs
-
Power Connectors
None

Graphics Processor

GM108
GPU Name
Wimbledon
-
GPU Variant
Wimbledon XT (216-0836036)
Maxwell
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
Unknown
Transistors
2.8 billion
Unknown
Die Size
212 mm²

Graphics Features

12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.3
Vulkan
1.2
5.0
CUDA
-
5.1
Shader Model
5.1

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