this topic.... very nice debating indeed....

my fren, a sony technician and me did confirm there is a change,

one HDMI seem to display clearer PQ than the other, and also for AQ the ambience is different

As for me i believe there is a difference,
but at the end of the day... The Decision is Yours

Data stream received will not be accurate. So video/audio will not be reproduced accurately.

But typically in data transmission over network, if there are errors, the protocols allows for re-transmits, ie. send again to fix the error. But for high bandwidth streaming of audio/video, don't think there's time to re-transmit?

So, unless you have robotic eyes and ears that can sense all these minute inaccuracy of video/audio reproduction, then maybe the splurge on expensive HDMI cables is only psychologically effective, ie. you think you are seeing a better picture or hearing a better sound, and so, therefore you "really" do.

HI! i just bought my CPU yesterday and my graphic card has HDMI port and Display port (also optical connection for audio). I also have DELL 2408WFP at home with DisplayPort Cable already include. I also have 2.1 Speaker with optical Audio connection (but does not have HDMI I think). Now my question is, do i still need to buy HDMI cable for a more clearer FULL HD quality video, or is DisplayPort cable enough already? Is there alot difference if I also buy the optical cable for my sound?

Firstly each pixel has 32 bits (0,1), so a FULL HD 1080p  is 2 million x 32 bits = 64mil bits.
Assume a 60Hz refresh rate which means 60x64 mil bits = 3.84Gbps + additional bits for CRC, audio and god knows what... is well within the range of HDMI 1.3 (10.2 Gbps)

YOu must understand 0 or 1 is not ON or OFF this simple in this case. These 32 bits represent a coding that the TV understand so that it will project a color to the pixel.

Then you must also understand something call CRC (Cyclic Redundancy Check). These bits transmit throught the cable in "packets". Any corrupted bits in the packets gets detected by the CRC algorithm which the TV calculates. Now the TV know that the packet for this particular pixel is spoilt, the TV will most probably display a default color for it, white if i am not wrong.

You are correct you will still get a picture, but not getting the FULL picture. But if a few thousands pixels are corrupted, most probably your picture will have white patches on it. You will not get clearer picture, red is redder, sky is bluer etcc....
Anyway, the probabllity of getting corrupted bits is probably 0.0001%.

Guys, follow-up on my question about. Is there a big difference between DisplayPort Cable and HDMI cable? Coz I only have display port cable as of now (bundled when I buy DELL 2408WFP). What is the advantage if I use HDMI cable instead of DisplayPort cable

Since the analog signal only carries the interpration of 0 or 1, the error margin is big, you don't need a super quality cable to do the job.
Any decent cable will do the job.

On this point, I just read on wired.com:

The claim that "digital cables, by definition, have no signal loss" is indeed false. It’s only true if the transmission is error-corrected, for example by using a protocol like IP.  Without error correction, the stream of ones and zeroes can lose integrity en-route just like an analog wave. DVI and HDMI are not error corrected.

So that implies that transmission error / signal loss could potentially occur in poorly built HDMI cables.

I would suggest for those who play CD Audio. Try this test:

When you play CD Audio, compare between:
1. Use the HDMI cable to your AVR. At your AVR choose HDMI input.
2. Use a RCA cable red/white (L/R) to your AVR. At AVR chooce AV1 input.

Compare the result. You will notice the diffrent. This is how I listen to audio CD using my player. At least I can feel the diffrent.

In other words, if you plan to send digital signal, HDMI what ever price( with correct category) will do a good job. But if you plan to send an analog signal, get a good HDMI or out it thru other analog source. Just my 2 cents...

ok, so is da same applies to analog cables like component and s-video?

I mention used the same BDPlayer with both output ( HDMI and RCA) from BDPlayer. I only have 1 player.

Audio CD is analog?????

I tot only cassette tapes and Vinyls were analog, since CDs are considered digital media, or am i off here?

My apology.. is digital... but is a PCM format already....

Btw, if we connect a notebook to F HD TV. We can select the max screen size of 1920x1080. But the LCD TV show over size. If this the TV setting or notebook setting? Any way to fit all into the TV screen?

Well, I come from wire harness industry..

To be frank, even some renown electronic comsumer product brand (cant disclose the name here) is buying cheap HDMI cable from PRC and ask us to change the packaging and sell as their brand.

So, go figure...

Im an engineer in HDMI industry.
Let me clarify something. Not all HDMI are the same. HDMI are operated at Ghz frequency. It affects the resistance and conductance of the copper. Even loose connector does affect the transmission. To pass the HDMI certification test, manufacturer have to pass the eye pattern/diagram that are determine by the spec.

There are 2 category of the test.
Category 1 - equivalent to 720p or 1080i (74.5 MHz)
Category 2 - more than enough for 1080p (340 MHz)

a cable vendor can designate a cable as Category 1 or 2, but cannot specify a lower bandwidth, and consequently, all HDMI 1.3 compliance testing is done at at least 720p/1080i frequencies.

In case of Category 1 certified cable:
For high qualty cable, u should be able to transmit data without any error on 1080p device.
For a low quality cable, u must be very lucky for it to works on 1080p (yes, it can work)
Why? because no test to certify that the cable able to operate at least 1080p. Those low quality cable might just barely pass the test. You can buy certified category 2 cable to be sure. But of coz, prepare to pay more

hope this help

avoid cable with 28awg copper wire, they are too fragile at the connection point with the socket

what is all the fuss? u want to buy cheap HDMI buy la. I NEVER said it wont work. but there is no gurantee it will work. If it work, just enjoy ur saving

thats why i wanna ask, know where to get cheapo optical cables..lets say rm30-50 ones

dont need monster cable, etc...not going to pay rm100+ for a cable