NVIDIA GeForce 800M vs NVIDIA GeForce GT 820M

Comparative analysis of NVIDIA GeForce 800M and NVIDIA GeForce GT 820M videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), CompuBench 1.5 Desktop - T-Rex (Frames/s).

NVIDIA GeForce 800M

NVIDIA GeForce GT 820M

Differences

Reasons to consider the NVIDIA GeForce 800M

Videocard is newer: launch date 3 month(s) later
Around 35% better performance in PassMark - G2D Mark: 195 vs 144
Around 82% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 4.91 vs 2.692

Specifications (specs)
Launch date	17 March 2014 vs 27 November 2013
Benchmarks
PassMark - G2D Mark	195 vs 144
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	4.91 vs 2.692

Reasons to consider the NVIDIA GeForce GT 820M

Around 5% higher core clock speed: 775 MHz vs 738 MHz
2.1x more texture fill rate: 12.4 GTexel / s vs 5.904 GTexel / s
2x more pipelines: 96 vs 48
2.1x better floating-point performance: 297.6 gflops vs 141.7 gflops
Around 16% better performance in PassMark - G3D Mark: 551 vs 477
Around 94% better performance in Geekbench - OpenCL: 2530 vs 1303
Around 48% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 161.29 vs 109.13
Around 64% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 11.858 vs 7.249
Around 17% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 17.753 vs 15.218
Around 80% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 1263 vs 703
2.2x better performance in GFXBench 4.0 - Manhattan (Frames): 2479 vs 1123
2.1x better performance in GFXBench 4.0 - T-Rex (Frames): 3327 vs 1601
Around 80% better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 1263 vs 703
2.2x better performance in GFXBench 4.0 - Manhattan (Fps): 2479 vs 1123
2.1x better performance in GFXBench 4.0 - T-Rex (Fps): 3327 vs 1601

Specifications (specs)
Core clock speed	775 MHz vs 738 MHz
Texture fill rate	12.4 GTexel / s vs 5.904 GTexel / s
Pipelines	96 vs 48
Floating-point performance	297.6 gflops vs 141.7 gflops
Benchmarks
PassMark - G3D Mark	551 vs 477
Geekbench - OpenCL	2530 vs 1303
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	161.29 vs 109.13
CompuBench 1.5 Desktop - Video Composition (Frames/s)	11.858 vs 7.249
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	17.753 vs 15.218
GFXBench 4.0 - Car Chase Offscreen (Frames)	1263 vs 703
GFXBench 4.0 - Manhattan (Frames)	2479 vs 1123
GFXBench 4.0 - T-Rex (Frames)	3327 vs 1601
GFXBench 4.0 - Car Chase Offscreen (Fps)	1263 vs 703
GFXBench 4.0 - Manhattan (Fps)	2479 vs 1123
GFXBench 4.0 - T-Rex (Fps)	3327 vs 1601

Compare benchmarks

GPU 1: NVIDIA GeForce 800M
GPU 2: NVIDIA GeForce GT 820M

PassMark - G3D Mark

GPU 1

GPU 2

477

551

PassMark - G2D Mark

GPU 1

GPU 2

195

144

Geekbench - OpenCL

GPU 1

GPU 2

1303

2530

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

GPU 1

GPU 2

4.91

2.692

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

GPU 1

GPU 2

109.13

161.29

CompuBench 1.5 Desktop - Video Composition (Frames/s)

GPU 1

GPU 2

7.249

11.858

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

GPU 1

GPU 2

15.218

17.753

GFXBench 4.0 - Car Chase Offscreen (Frames)

GPU 1

GPU 2

703

1263

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

1123

2479

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

1601

3327

GFXBench 4.0 - Car Chase Offscreen (Fps)

GPU 1

GPU 2

703

1263

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

1123

2479

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

1601

3327

Name	NVIDIA GeForce 800M	NVIDIA GeForce GT 820M
PassMark - G3D Mark	477	551
PassMark - G2D Mark	195	144
Geekbench - OpenCL	1303	2530
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	4.91	2.692
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	109.13	161.29
CompuBench 1.5 Desktop - Video Composition (Frames/s)	7.249	11.858
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	15.218	17.753
GFXBench 4.0 - Car Chase Offscreen (Frames)	703	1263
GFXBench 4.0 - Manhattan (Frames)	1123	2479
GFXBench 4.0 - T-Rex (Frames)	1601	3327
GFXBench 4.0 - Car Chase Offscreen (Fps)	703	1263
GFXBench 4.0 - Manhattan (Fps)	1123	2479
GFXBench 4.0 - T-Rex (Fps)	1601	3327
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.55

Compare specifications (specs)

	NVIDIA GeForce 800M	NVIDIA GeForce GT 820M
Essentials
Architecture	Fermi 2.0	Fermi 2.0
Code name	GF117	GF117
Launch date	17 March 2014	27 November 2013
Place in performance rating	1511	1366
Type	Desktop	Desktop
Technical info
Core clock speed	738 MHz	775 MHz
Floating-point performance	141.7 gflops	297.6 gflops
Manufacturing process technology	28 nm	28 nm
Pipelines	48	96
Texture fill rate	5.904 GTexel / s	12.4 GTexel / s
Thermal Design Power (TDP)	15 Watt	15 Watt
Transistor count	585 million	585 million
Video outputs and ports
Display Connectors	No outputs	No outputs
Compatibility, dimensions and requirements
Bus support	PCI Express 3.0
Interface	PCIe 2.0 x16	PCIe 2.0 x16
API support
DirectX	12.0 (11_0)	12.0 (11_0)
OpenGL	4.5	4.6
Memory
Maximum RAM amount	1 GB	1 GB
Memory bandwidth	14.4 GB / s	14.4 GB / s
Memory bus width	64 Bit	64 Bit
Memory clock speed	1800 MHz	1800 MHz
Memory type	DDR3	DDR3
Technologies
CUDA
GameWorks
GPU Boost
Optimus