NVIDIA GeForce 840M versus NVIDIA GeForce GT 640 Rev. 2
Comparaison des cartes vidéo NVIDIA GeForce 840M and NVIDIA GeForce GT 640 Rev. 2 pour tous les caractéristiques connus dans les catégories suivants: Essentiel, Infos techniques, Sorties et ports de vidéo, Compatibilité, dimensions et exigences, Soutien API, Mémoire, Technologies. Analyse du performance de référence des cartes vidéo: 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.
Différences
Raisons pour considerer le NVIDIA GeForce 840M
- La carte vidéo est plus nouvelle: date de sortie 9 mois plus tard
- Environ 7% taux plus haut de remplissage de la texture: 17.98 GTexel / s versus 16.74 GTexel / s
- Environ 7% de meilleur performance á point flottant: 863.2 gflops versus 803.3 gflops
- Environ 48% consummation d’énergie moyen plus bas: 33 Watt versus 49 Watt
- 4x plus de taille maximale de mémoire : 4 GB versus 1 GB
- 2.2x meilleur performance en CompuBench 1.5 Desktop - Face Detection (mPixels/s): 22.848 versus 10.475
- 38.7x meilleur performance en CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.237 versus 0.032
- 2.4x meilleur performance en CompuBench 1.5 Desktop - Video Composition (Frames/s): 21.15 versus 8.717
- 9.1x meilleur performance en CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 95.545 versus 10.454
| Caractéristiques | |
| Date de sortie | 12 March 2014 versus 29 May 2013 |
| Taux de remplissage de la texture | 17.98 GTexel / s versus 16.74 GTexel / s |
| Performance á point flottant | 863.2 gflops versus 803.3 gflops |
| Thermal Design Power (TDP) | 33 Watt versus 49 Watt |
| Taille de mémore maximale | 4 GB versus 1 GB |
| Référence | |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 22.848 versus 10.475 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 1.237 versus 0.032 |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 21.15 versus 8.717 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 95.545 versus 10.454 |
Raisons pour considerer le NVIDIA GeForce GT 640 Rev. 2
- Environ 2% plus haut vitesse du noyau: 1046 MHz versus 1029 MHz
- 2.5x plus de vitesse de mémoire: 5008 MHz versus 2002 MHz
- Environ 7% meilleur performance en CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 173.537 versus 162.594
- Environ 11% meilleur performance en GFXBench 4.0 - Car Chase Offscreen (Frames): 2309 versus 2085
- Environ 23% meilleur performance en GFXBench 4.0 - Manhattan (Frames): 3354 versus 2736
- Environ 1% meilleur performance en GFXBench 4.0 - T-Rex (Frames): 3220 versus 3191
- Environ 11% meilleur performance en GFXBench 4.0 - Car Chase Offscreen (Fps): 2309 versus 2085
- Environ 23% meilleur performance en GFXBench 4.0 - Manhattan (Fps): 3354 versus 2736
- Environ 1% meilleur performance en GFXBench 4.0 - T-Rex (Fps): 3220 versus 3191
| Caractéristiques | |
| Vitesse du noyau | 1046 MHz versus 1029 MHz |
| Vitesse de mémoire | 5008 MHz versus 2002 MHz |
| Référence | |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 173.537 versus 162.594 |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2309 versus 2085 |
| GFXBench 4.0 - Manhattan (Frames) | 3354 versus 2736 |
| GFXBench 4.0 - T-Rex (Frames) | 3220 versus 3191 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2309 versus 2085 |
| GFXBench 4.0 - Manhattan (Fps) | 3354 versus 2736 |
| GFXBench 4.0 - T-Rex (Fps) | 3220 versus 3191 |
Comparer les références
GPU 1: NVIDIA GeForce 840M
GPU 2: NVIDIA GeForce GT 640 Rev. 2
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) |
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| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) |
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| CompuBench 1.5 Desktop - T-Rex (Frames/s) |
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| CompuBench 1.5 Desktop - Video Composition (Frames/s) |
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| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) |
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| GFXBench 4.0 - Car Chase Offscreen (Frames) |
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| GFXBench 4.0 - Manhattan (Frames) |
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| GFXBench 4.0 - T-Rex (Frames) |
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| GFXBench 4.0 - Car Chase Offscreen (Fps) |
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| GFXBench 4.0 - Manhattan (Fps) |
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| GFXBench 4.0 - T-Rex (Fps) |
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| Nom | NVIDIA GeForce 840M | NVIDIA GeForce GT 640 Rev. 2 |
|---|---|---|
| PassMark - G3D Mark | 1090 | |
| PassMark - G2D Mark | 149 | |
| Geekbench - OpenCL | 5721 | |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 22.848 | 10.475 |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 162.594 | 173.537 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 1.237 | 0.032 |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 21.15 | 8.717 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 95.545 | 10.454 |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2085 | 2309 |
| GFXBench 4.0 - Manhattan (Frames) | 2736 | 3354 |
| GFXBench 4.0 - T-Rex (Frames) | 3191 | 3220 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2085 | 2309 |
| GFXBench 4.0 - Manhattan (Fps) | 2736 | 3354 |
| GFXBench 4.0 - T-Rex (Fps) | 3191 | 3220 |
| 3DMark Fire Strike - Graphics Score | 503 |
Comparer les caractéristiques
| NVIDIA GeForce 840M | NVIDIA GeForce GT 640 Rev. 2 | |
|---|---|---|
Essentiel |
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| Architecture | Maxwell | Kepler 2.0 |
| Nom de code | GM108 | GK208 |
| Date de sortie | 12 March 2014 | 29 May 2013 |
| Position dans l’évaluation de la performance | 1272 | 1274 |
| Genre | Laptop | Desktop |
| Prix de sortie (MSRP) | $89 | |
Infos techniques |
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| Vitesse augmenté | 1124 MHz | |
| Vitesse du noyau | 1029 MHz | 1046 MHz |
| Performance á point flottant | 863.2 gflops | 803.3 gflops |
| Processus de fabrication | 28 nm | 28 nm |
| Pipelines | 384 | 384 |
| Taux de remplissage de la texture | 17.98 GTexel / s | 16.74 GTexel / s |
| Thermal Design Power (TDP) | 33 Watt | 49 Watt |
Sorties et ports de vidéo |
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| Connecteurs d’écran | No outputs | 1x DVI, 1x HDMI, 1x VGA |
Compatibilité, dimensions et exigences |
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| Soutien de bus | PCI Express 2.0, PCI Express 3.0 | |
| Interface | PCIe 3.0 x8 | PCIe 2.0 x8 |
| Taille du laptop | medium sized | |
| Longeur | 145 mm | |
| Connecteurs d’énergie supplementaires | None | |
Soutien API |
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| DirectX | 12.0 (11_0) | 12.0 (11_0) |
| OpenGL | 4.5 | 4.6 |
Mémoire |
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| RAM maximale | 4 GB | 1 GB |
| Bande passante de la mémoire | 16.02 GB / s | 40.06 GB / s |
| Largeur du bus mémoire | 64 Bit | 64 Bit |
| Vitesse de mémoire | 2002 MHz | 5008 MHz |
| Genre de mémoire | DDR3 | GDDR5 |
| Mémoire partagé | 0 | |
Technologies |
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| CUDA | ||
| GameWorks | ||
| GeForce Experience | ||
| GPU Boost | ||
| Optimus | ||
Navigation
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Comparer les cartes vidéo
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NVIDIAGeForce 840M vs
NVIDIAGeForce GT 640 Rev. 2
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NVIDIAGeForce 840M vs
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NVIDIAGeForce 840M vs
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