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HDMI audio or SPDIF

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Waza

Member
Joined
Jan 21, 2014
Location
Finland
I don't think there is much of a difference really, unless you use toslink with SPDIF. Both connection types can carry uncompressed stereo signal and/or compressed surround.
HDMI has few advantages on the bitrate and can carry lossless surround if you are into movies and own a decent home theather system.
 

NiHaoMike

dBa Member
Joined
Mar 1, 2013
HDMI natively supports surround while S/PDIF must use compression for surround modes. Running HDMI through a receiver can add lag and may require the receiver to be on for the monitor to work. A good solution is to use a HDMI splitter. (That requires the receiver to be able to accept the same pixel clock as the monitor, so those running something higher than 1080p would be out of luck with older receivers.) You can also use another output on your GPU (may cause some GPUs to run hotter) or use the onboard HDMI for audio only.

In the end, while HDMI seems to be a great idea on paper (minus the DRM junk, that is) and is certainly very usable, I kind of wished they implemented the audio part as an extended version of S/PDIF so that a passive adapter can split the audio and video signals.
 
OP
W

weakssauce

Registered
Joined
Jun 5, 2014
Location
San Antonio TX
iv never experienced lag when running hdmi through the receiver... do you mean input lag for gaming?

and thanks for all that great info :thup:
 

Evilsizer

Senior Forum Spammer
Joined
Jun 6, 2002
well depending on your setup, i mean how you have things routed and through how many devices. it is does happen to have the audio lag behind whats going on. if its a moves its like watching a kung fu movie subb'd to English.
 

NiHaoMike

dBa Member
Joined
Mar 1, 2013
iv never experienced lag when running hdmi through the receiver... do you mean input lag for gaming?

and thanks for all that great info :thup:
Some receivers do and others don't. It's actually the more expensive receivers that are more likely to have that issue.