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post #11 of 12
Quote:
Originally Posted by silvergoat View Post

Does anyone know the answer to this question?

Is uncompressed HD streaming limited by CPU, GPU, or hard drive speed?

Actually neither.

Uncompressed HD (MPEG-2) can reach up to 50 megabits/sec (Mbit/s) which is nothing in terms of data throughput for a computer - a standard SATA (1) interface is capable of 1,500 MBit/s, SATA (2) 3,000 MBit/s and SATA (3) 6,000 MBit/s but the drives themselves are not that fast (unless you go with solid state). For comparison, your typical PC3-12800 (DDR3- 1600) memory is 102.4 Gbit/s. Any CPU from the last 10 years would be able to stream your content.

Since your server is simply transferring the data to your client, its graphics interface isn't used at all and a lot of servers don't even have a graphics adapter unless (as others suggested) you're compressing the data to, say H.264 in which case, it could help by offloading some of the workload.

So, the most likely bottleneck in your system will be your network - this is typically 100MBit/s which doesn't include the packet overhead in transmitting data which is about 20% or network congestion but will do it fine. If you're on wifi then this is likely not going to work well at all as typical wifi speeds are 54MBit/s and has even more overhead due to packet loss. 'N' type wifi has a theoretical speed of 104MBit/s but again, this can be affected by walls, people movement etc so isn't guaranteed.

When streaming the HD content, your client computer application should cache enough of the data from the server to handle any expected outages which depending on your playback software, should be controllable.
 
Mega Media PC
(21 items)
 
Media Server
(16 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 P9X79 PRO Reference EVGA GTX 780 TI Reference EVGA GTX 780 TI 
GraphicsRAMHard DriveOptical Drive
Reference EVGA GTX 780 TI Samsung  Corsair Force 3 Samsung BD-ROM drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Full Copper block Phobia 150mm silver nickel reservior EK-FC780 GTX Ti - Nickel Original CSQ EK-FC780 GTX Ti - Nickel Original CSQ 
CoolingCoolingCoolingCooling
EK-FC780 GTX Ti - Nickel Original CSQ Alphacool 140.3 UT60 Nexxxos Radiator Alphacool 140.3 UT60 Nexxxos Radiator 12x Noctua NF-A14 PWM fans on rads 
CoolingCoolingOSMonitor
EK D5 Vario X-top EK D5 Vario X-top Win 7 Pro x64 Dell U2713H 
KeyboardPowerCaseMouse
Razer Lycosa ECGA SUperNova G2 1300W Caselabs TH10 Razer Lachesis 
Mouse PadAudioAudio
Razer eXactMat NI Komplete Audio NAD C320 Stereo Amplifier 
CPUMotherboardGraphicsRAM
Core i7 920 d0 Asus rampage ii gene Asus GTX 480 Corsair xms3 ddr3 2000 c9 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 3 Samsung 2.5" notebook drive Samsung DVD-R drive Noctua 120 
CoolingCoolingCoolingOS
Noctua 120 Noctua 140 Noctua 140 Win7 x64 pro 
OSMonitorKeyboardPower
Mythbuntu 12.04.1 Panasonic 46" Plasma HDTV Apple Aluminium Keyboard  corsair hx650 
CaseMouseAudioAudio
Fractal R1 Apple Mighty Mouse Sony STR-DH800 Amp via HDMI in 5.0 speaker conf... Mordaunt Short 905 Centre, 902 front and 904 re... 
Other
Xbox wireless controller dongle 
CPUMotherboardGraphicsRAM
core 2 quad q6600 Asus P5K-E XFX 9800 GT Geil DDR2 4x1GB @ 1066 MHz  
Hard DriveHard DriveHard DriveHard Drive
Seagate Baraccuda Samsung HDD Seagate Baraccuda WD Caviar Black 
Hard DriveOptical DriveCoolingOS
Seagate Baraccuda Samsung DVD-RW Thermalright CPU cooler Mythbuntu 12.04.1 
PowerCaseOtherOther
Corsair 450W PSU Antec 300 WinTV Nova HD-S2 WinTV Nova-T PCI 
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Mega Media PC
(21 items)
 
Media Server
(16 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 P9X79 PRO Reference EVGA GTX 780 TI Reference EVGA GTX 780 TI 
GraphicsRAMHard DriveOptical Drive
Reference EVGA GTX 780 TI Samsung  Corsair Force 3 Samsung BD-ROM drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Full Copper block Phobia 150mm silver nickel reservior EK-FC780 GTX Ti - Nickel Original CSQ EK-FC780 GTX Ti - Nickel Original CSQ 
CoolingCoolingCoolingCooling
EK-FC780 GTX Ti - Nickel Original CSQ Alphacool 140.3 UT60 Nexxxos Radiator Alphacool 140.3 UT60 Nexxxos Radiator 12x Noctua NF-A14 PWM fans on rads 
CoolingCoolingOSMonitor
EK D5 Vario X-top EK D5 Vario X-top Win 7 Pro x64 Dell U2713H 
KeyboardPowerCaseMouse
Razer Lycosa ECGA SUperNova G2 1300W Caselabs TH10 Razer Lachesis 
Mouse PadAudioAudio
Razer eXactMat NI Komplete Audio NAD C320 Stereo Amplifier 
CPUMotherboardGraphicsRAM
Core i7 920 d0 Asus rampage ii gene Asus GTX 480 Corsair xms3 ddr3 2000 c9 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 3 Samsung 2.5" notebook drive Samsung DVD-R drive Noctua 120 
CoolingCoolingCoolingOS
Noctua 120 Noctua 140 Noctua 140 Win7 x64 pro 
OSMonitorKeyboardPower
Mythbuntu 12.04.1 Panasonic 46" Plasma HDTV Apple Aluminium Keyboard  corsair hx650 
CaseMouseAudioAudio
Fractal R1 Apple Mighty Mouse Sony STR-DH800 Amp via HDMI in 5.0 speaker conf... Mordaunt Short 905 Centre, 902 front and 904 re... 
Other
Xbox wireless controller dongle 
CPUMotherboardGraphicsRAM
core 2 quad q6600 Asus P5K-E XFX 9800 GT Geil DDR2 4x1GB @ 1066 MHz  
Hard DriveHard DriveHard DriveHard Drive
Seagate Baraccuda Samsung HDD Seagate Baraccuda WD Caviar Black 
Hard DriveOptical DriveCoolingOS
Seagate Baraccuda Samsung DVD-RW Thermalright CPU cooler Mythbuntu 12.04.1 
PowerCaseOtherOther
Corsair 450W PSU Antec 300 WinTV Nova HD-S2 WinTV Nova-T PCI 
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post #12 of 12
Thread Starter 
Quote:
Originally Posted by pharcycle View Post

Actually neither.

Uncompressed HD (MPEG-2) can reach up to 50 megabits/sec (Mbit/s) which is nothing in terms of data throughput for a computer - a standard SATA (1) interface is capable of 1,500 MBit/s, SATA (2) 3,000 MBit/s and SATA (3) 6,000 MBit/s but the drives themselves are not that fast (unless you go with solid state). For comparison, your typical PC3-12800 (DDR3- 1600) memory is 102.4 Gbit/s. Any CPU from the last 10 years would be able to stream your content.

Since your server is simply transferring the data to your client, its graphics interface isn't used at all and a lot of servers don't even have a graphics adapter unless (as others suggested) you're compressing the data to, say H.264 in which case, it could help by offloading some of the workload.

So, the most likely bottleneck in your system will be your network - this is typically 100MBit/s which doesn't include the packet overhead in transmitting data which is about 20% or network congestion but will do it fine. If you're on wifi then this is likely not going to work well at all as typical wifi speeds are 54MBit/s and has even more overhead due to packet loss. 'N' type wifi has a theoretical speed of 104MBit/s but again, this can be affected by walls, people movement etc so isn't guaranteed.

When streaming the HD content, your client computer application should cache enough of the data from the server to handle any expected outages which depending on your playback software, should be controllable.

Thanks- That helped create some new questions, but I'm in the process of googling.
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Noctua NH-D14 Windows 7 Pro Dell U2412M Rosewill Cherry MX Brown 
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SandySilver
(19 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3770k Gigabyte Z77X-UP5 TH Nvidia GTX 480 Nvidia GTX 480 
RAMHard DriveHard DriveOptical Drive
Samsung WD VelociRaptor HHTZ OCZ Agility 4 ASUS BluRay 
CoolingOSMonitorKeyboard
Noctua NH-D14 Windows 7 Pro Dell U2412M Rosewill Cherry MX Brown 
PowerCaseMouseMouse Pad
Seasonic Platinum 1000 Silverstone Fortress FT02-B Gigabyte Force M7 SteelSeries 
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HK AVR 520 Infinity IL50 Velodyne CT-120 
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