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Comparison Chart
Product Quadro NVS 280 Quadro NVS 290 Quadro NVS 440 Quadro NVS 450
Bus Interface PCI-32 PCI Express x16
PCI Express x1		 PCI Express x16
PCI Express x1		 PCI Express x16
Memory Size 64MB DDR 256MB DDR2 256MB DDR2 512MB GDDR33
Memory Interface 64-bit 64-bit 256-bit (128bit/gpu) 128-bit (64bit/gpu)
Memory Bandwidth 3.2GB/s 6.4 GB/s 8 GB/s per gpu 11.2 GB/s per gpu
Form Factor SFF1 SFF1 ATX Full Height,
1/2 length		 ATX Full Height,
1/2 length
CUDA Processor Cores N/A 16 N/A 16
Display Connectors DMS-59 (1) DMS-59 (1) DMS-59 (2) DisplayPort (4)
Max. Displays per Board 2 2 4 4
Max Digital Display Support 1600x1200 1920x1200 1920x1200 2560 x 1600
Max Analog Display Support 2048x1536 2048x1536 2048x1536 N/A
OpenGL 1.4 2.0 1.5 2.1
DirectX 9.0 10.0 9.0c 10.0
Shader Model 2.0 4.0 3.0 4.0
CUDA enabled N/A Yes N/A Yes
Power & Cooling 12W - Passive 21W - Passive 31W - Passive 35W - Passive
nView Enabled Yes Yes Yes Yes
DisplayPort Links N/A N/A N/A Yes
DVI Links 2 2 4 46
Analog Displays VGA 2 2 4 N/A
1 SFF= Small Form Factor
2 256MB of local frame buffer (128MB DDR memory per GPU)
3 512MB of local frame buffer (256MB GDDR3 memory per GPU)
6 Through DisplayPort to DVI-D (Single Link) industry standard cables