NVIDIA GeForce 840M vs NVIDIA GeForce GT 820M

Comparative analysis of NVIDIA GeForce 840M 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 - T-Rex (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), 3DMark Fire Strike - Graphics Score.

 

Differences

Reasons to consider the NVIDIA GeForce 840M

• Videocard is newer: launch date 3 month(s) later
• Around 33% higher core clock speed: 1029 MHz vs 775 MHz
• Around 45% higher texture fill rate: 17.98 GTexel / s vs 12.4 GTexel / s
• 4x more pipelines: 384 vs 96
• 2.9x better floating-point performance: 863.2 gflops vs 297.6 gflops
• 4x more maximum memory size: 4 GB vs 1 GB
• Around 11% higher memory clock speed: 2002 MHz vs 1800 MHz
• Around 99% better performance in PassMark - G3D Mark: 1096 vs 551
• Around 5% better performance in PassMark - G2D Mark: 151 vs 144
• 2.3x better performance in Geekbench - OpenCL: 5771 vs 2530
• 8.5x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 22.848 vs 2.692
• Around 1% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 162.594 vs 161.29
• 2.2x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.237 vs 0.55
• Around 78% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 21.15 vs 11.858
• 5.4x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 95.545 vs 17.753
• Around 65% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 2085 vs 1263
• Around 10% better performance in GFXBench 4.0 - Manhattan (Frames): 2736 vs 2479
• Around 65% better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 2085 vs 1263
• Around 10% better performance in GFXBench 4.0 - Manhattan (Fps): 2736 vs 2479

Reasons to consider the NVIDIA GeForce GT 820M

• 2.2x lower typical power consumption: 15 Watt vs 33 Watt
• Around 4% better performance in GFXBench 4.0 - T-Rex (Frames): 3327 vs 3191
• Around 4% better performance in GFXBench 4.0 - T-Rex (Fps): 3327 vs 3191

Compare benchmarks

GPU 1: NVIDIA GeForce 840M
GPU 2: NVIDIA GeForce GT 820M

PassMark - G3D Mark	GPU 1 GPU 2	1096 551
PassMark - G2D Mark	GPU 1 GPU 2	151 144
Geekbench - OpenCL	GPU 1 GPU 2	5771 2530
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	GPU 1 GPU 2	22.848 2.692
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	GPU 1 GPU 2	162.594 161.29
CompuBench 1.5 Desktop - T-Rex (Frames/s)	GPU 1 GPU 2	1.237 0.55
CompuBench 1.5 Desktop - Video Composition (Frames/s)	GPU 1 GPU 2	21.15 11.858
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	GPU 1 GPU 2	95.545 17.753
GFXBench 4.0 - Car Chase Offscreen (Frames)	GPU 1 GPU 2	2085 1263
GFXBench 4.0 - Manhattan (Frames)	GPU 1 GPU 2	2736 2479
GFXBench 4.0 - T-Rex (Frames)	GPU 1 GPU 2	3191 3327
GFXBench 4.0 - Car Chase Offscreen (Fps)	GPU 1 GPU 2	2085 1263
GFXBench 4.0 - Manhattan (Fps)	GPU 1 GPU 2	2736 2479
GFXBench 4.0 - T-Rex (Fps)	GPU 1 GPU 2	3191 3327

Compare specifications (specs)