External Screen = image quality ?

Hello everyone ,

I just bought a brand new screen , Iiyama B2475 ( 24" so ) , and i'd like to know if somebody knows the difference between the three types of plugs : VGA / DVI / HDMI

I already know that HDMI is somehow different because they can also transfer sounds , but which ones gives you the best quality ? Cause i'd rather use the HDMI for my Xbox 360 ( got a problem with sound on it , so i need HDMI )

I already tried adapters like VGA / DVI or DVI / HDMI , and even try once VGA => DVI => HDMI , it works ! ( but awefull , 15cm long plug )


So , what's the difference between thoes plugs ? Anolog / Digital ?

Yeah , so what's better ? i'm pretty sure that DVI gives a better image than VGA , but if i plug a DVI cable ( Screen ) with an adapter on a VGA plug ( PC side ) , will i get the " DVI quality " ?

thanks

 

DVI/HDMI over VGA at high resolutions. DVI and HDMI are identical electronically when it comes to the image being displayed, only the pin layout is physically different, DVI doesn't do sound though. VGA to DVI will give you the same image quality as VGA, you can either go HDMI or HDMI -> DVI adapter. HDMI cables are dirt cheap online, even the good ones, Best Buy will rip you off if you buy one there though, i got the one i use for my G73, 6' for 3$ on sale.

 

Ok , thanks for that confirmation.

Now i'm in front of a deal : Plug my Xbox 360 with VGA cable , having a sound problem ( Xbox soundcard is damaged ) and plug my laptop via HDMI , or just be bothered to buy two more cables and always switch HDMI cables on a screen with 3 input ... Boring xD

BTW , Xbox or Laptop , if VGA is not the same signal ( and may be converted ) , what about overdrive that screen have ? Is it disable ? Will i get a somehow input lag or "shadow " that i can't have on HDMI ?

 

You could get a HDMI cable and a HDMI to DVI adapter, that would allow you to run the monitor on HDMI with the 360 and DVI with the laptop. One more dongle to buy, but they aren't expensive either. With shipping, it should still be a little under $20. Some HDMI->DVI adapters have an extra 4-pin on the left and not all lcds have the port that support those, so it's something to watch out for when you get the adapter.

 

Pretty good idea

I found a cable which seems to be perfect for that use :

AmazonBasics - Câble HDMI-DVI blindé 3m - Plaqué Or: Amazon.fr: High-tech

( i'm premium for 1 month so i won't pay shipping )

7€ for that looks decent no ? Any thoughts on " Amazon Brand " ( wich i never eard of it before ) Thoses gold plated things looks cool for that price no ?

 

Yeah, that would work perfectly well, forgot about those HDMI-DVI cables. HDMi is just a digital signal, unless you use it for 7.1 sound or use a ridiculously long cable, you don't need a super expensive one. That cable would cost you about the same as a cable and adapter so it's all good.

 

Wait, how in the hell did VGA->DVI->HDMI work? Since when does HDMI carry analog signals?

 

LOL my thought exactly.

Yeah don't run VGA. Go with DVI or HDMI for better performance and image quality. Running an LCD on VGA can actually reduce your frame rates at really high resolutions in games. It's happened to me before.

 

He said it actually worked, that's what raised my interest.

 

I'll try again if i find my adapters back , lost after several LAN times with friend , some of them probably take em' away.

But hey , there's no reason it would'nt work , as VGA / DVI adapters exists and works well , so if the signal can be changed from VGA to DVI , no reason the HDMI plug cannot handle the signal it get from DVI

 

The thing is, DVI connectors have pins for both an analog signal and a digital one, whereas HDMI only has digital.

 

Oh i see what you mean here.

Damn , i want to find thoses adapters back and try again to see if i wasn't wrong , but i was pretty sure that this had work in the past. Maybe i was drunk @ Lan party -_-

 

Just got my Amazon cable , and i do not recommend it :

It seem that there's two " position " : i plug half of the cable , good picture , no parasite
Then , if i plug it to 100% , the screen goes black for a sec, and then appears with hundreds of parasite.

Just check the DVI Cable that came with the screen , there's only " half " of the pins on it. On the Amazon one , it's full ... I'm tired of RMA on EVERY SINGLE HIGH TECH PRODUCT i got , so i keep it , half pluged ...

I assume that this is caused by the " Ethernet " function of the cable that is probably not compatible with my screen ...

 

It's perfectly normal for the DVI connector to not have all the pins. Explanation: Digital Visual Interface - Wikipedia, the free encyclopedia

Which connector do you have to push in half way, DVI or HDMI?

 

The DVI one.

Any ideas ? ( on your link , the DVI cable i got with the screen is " DVI single link " , and the Amazon one look like " Male M1DA " , the last one )

 

First of all, that can't be an M1-DA connector, because that one has more pins than DVI. It's dual-link DVI.
Secondly, it can't be ethernet, because DVI doesn't carry that. I have no idea what could be causing that.

 

So you think that Amazon cable could be deffective ?

Seems to be solid , in a good shape , i would suggest something's wrong before i return that cable ... Tsss i'm tired of doing RMA and such.

Btw , thanks for your help ( and sorry for that ethernet thing , i was kinda disapointed to see that the HDMI cable i got from Amazon had an " ethernet " function wich i didn't even know that exist , so i thought that the DVI HDMI cable had the same function. )

 

How do the "parasites" look anyway?

 

Here's a pic taken with my phone , sorry for that crappy quality.

http://desmond.imageshack.us/Himg837/scaled.php?server=837&filename=photokl.jpg&res=medium

Thoses " blue " parasite cannot be seen on a Black nor white , but on other colors you can see them ( like on this pic )

Thoses " parasites " are somehow " moving " slowly or " blinking " , dunno the good word for it sorry , but it move a bit.

 

I've really no idea why is that happening and why does plugging it half-way fix it. Those artifact shouldn't be possible with a digital signal. You might try asking in the Hardware section or in some AV forums, this might tickle someone's curiosity.

 

I'll try to , thanks for your help !