NVIDIA GeForce 800A vs NVIDIA GeForce 840A

Comparative analysis of NVIDIA GeForce 800A and NVIDIA GeForce 840A videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

NVIDIA GeForce 800A

NVIDIA GeForce 840A

Differences

Reasons to consider the NVIDIA GeForce 800A

2.2x lower typical power consumption: 15 Watt vs 33 Watt

Thermal Design Power (TDP)	15 Watt vs 33 Watt

Reasons to consider the NVIDIA GeForce 840A

Around 39% higher core clock speed: 1029 MHz vs 738 MHz
3x more texture fill rate: 17.98 GTexel / s vs 5.904 GTexel / s
8x more pipelines: 384 vs 48
6.1x better floating-point performance: 863.2 gflops vs 141.7 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
Around 11% higher memory clock speed: 2002 MHz vs 1800 MHz
2.4x better performance in PassMark - G3D Mark: 1123 vs 477
Around 34% better performance in PassMark - G2D Mark: 221 vs 165

Specifications (specs)
Core clock speed	1029 MHz vs 738 MHz
Texture fill rate	17.98 GTexel / s vs 5.904 GTexel / s
Pipelines	384 vs 48
Floating-point performance	863.2 gflops vs 141.7 gflops
Manufacturing process technology	28 nm vs 40 nm
Memory clock speed	2002 MHz vs 1800 MHz
Benchmarks
PassMark - G3D Mark	1123 vs 477
PassMark - G2D Mark	221 vs 165

Compare benchmarks

GPU 1: NVIDIA GeForce 800A
GPU 2: NVIDIA GeForce 840A

PassMark - G3D Mark

GPU 1

GPU 2

477

1123

PassMark - G2D Mark

GPU 1

GPU 2

165

221

Name	NVIDIA GeForce 800A	NVIDIA GeForce 840A
PassMark - G3D Mark	477	1123
PassMark - G2D Mark	165	221
Geekbench - OpenCL		5596
GFXBench 4.0 - Car Chase Offscreen (Frames)		2188
GFXBench 4.0 - Car Chase Offscreen (Fps)		2188
GFXBench 4.0 - Manhattan (Frames)		2314
GFXBench 4.0 - Manhattan (Fps)		2314
GFXBench 4.0 - T-Rex (Frames)		3117
GFXBench 4.0 - T-Rex (Fps)		3117

Compare specifications (specs)

	NVIDIA GeForce 800A	NVIDIA GeForce 840A
Essentials
Architecture	Fermi 2.0	Maxwell
Code name	GF119	GM108
Launch date	17 March 2014	17 March 2014
Place in performance rating	986	987
Type	Desktop	Desktop
Technical info
Core clock speed	738 MHz	1029 MHz
Floating-point performance	141.7 gflops	863.2 gflops
Manufacturing process technology	40 nm	28 nm
Pipelines	48	384
Texture fill rate	5.904 GTexel / s	17.98 GTexel / s
Thermal Design Power (TDP)	15 Watt	33 Watt
Transistor count	292 million
Boost clock speed		1124 MHz
Video outputs and ports
Display Connectors	No outputs	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 3.0 x8
API support
DirectX	12.0 (11_0)	12.0 (11_0)
OpenGL	4.6	4.6
Memory
Maximum RAM amount	1 GB	1 GB
Memory bandwidth	14.4 GB / s	16.02 GB / s
Memory bus width	64 Bit	64 Bit
Memory clock speed	1800 MHz	2002 MHz
Memory type	DDR3	DDR3