If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
GA-Z87X-UD5H & GA-Z87X-UD4H and video outputs
I'm stuck between one of these mainboards right now and apart from 2
LAN's, 2 extra SATA 6 ports there does not seem to be much between them. However there is one issue i'm unsure off and how it could effect me in the future and it's to do with using onboard video from the CPU (still don't know what cpu to get yet), my current monitor only has VGA or DVI for connections so i use DVI right now from my video card (HD6450) and HDMI part of card to the tv to watch stuff from the pc on the TV and that works fine for now but when i move over to the Z87 chipset I presume both boards will run DVI for monitor ok AND the HDMI to TV will work fine as well. However what happens when i change my monitor in the future and i suspect monitor will only take HDMI with both the GA-Z87X-UD5H & GA-Z87X-UD4H be able to output to both HDMI's, i know the GA-Z87X-UD5H has 2 HDMI sockets but GA-Z87X-UD4H only has one and something called a display port which i have never heard of before any advice is welcome. JIm |
#2
|
|||
|
|||
GA-Z87X-UD5H & GA-Z87X-UD4H and video outputs
Jim wrote:
I'm stuck between one of these mainboards right now and apart from 2 LAN's, 2 extra SATA 6 ports there does not seem to be much between them. However there is one issue i'm unsure off and how it could effect me in the future and it's to do with using onboard video from the CPU (still don't know what cpu to get yet), my current monitor only has VGA or DVI for connections so i use DVI right now from my video card (HD6450) and HDMI part of card to the tv to watch stuff from the pc on the TV and that works fine for now but when i move over to the Z87 chipset I presume both boards will run DVI for monitor ok AND the HDMI to TV will work fine as well. However what happens when i change my monitor in the future and i suspect monitor will only take HDMI with both the GA-Z87X-UD5H & GA-Z87X-UD4H be able to output to both HDMI's, i know the GA-Z87X-UD5H has 2 HDMI sockets but GA-Z87X-UD4H only has one and something called a display port which i have never heard of before any advice is welcome. JIm DisplayPort, some of them support dual mode operation. In such a case, a passive DisplayPort to HDMI adapter can be used. Such a solution should handle 1920x1200 with reduced blanking (suited to an LCD), but I can't say whether higher resolutions are possible. I don't know if the intention of dual-mode DisplayPort is to go to 340MHz or not. http://en.wikipedia.org/wiki/Displayport "However, Dual-Mode DisplayPorts are designed to transmit a single-link DVI or HDMI 1.2/1.4 protocol across the interface through the use of an external passive adapter that selects the desired signal and converts the electrical signaling from LVDS to TMDS. Analog VGA and dual-link DVI require powered active adapters to convert the protocol and signal levels, and do not rely on Dual-Mode. VGA adapters are powered by the DisplayPort connector, while dual-link DVI adapters may rely on an external power source (see compatibility with HDMI, DVI and VGA)." You can try to line up some of the text in that article, with this one. http://en.wikipedia.org/wiki/Hdmi#Version_1.4 The 165MHz clock, gets you to 1920x1200. Running at 340MHz on HDMI, would take you to a higher resolution (at 60Hz). So the DisplayPort should get you to at least 1920x1200. The pixel clock is a bit of a misnomer. For each clock tick, around ten bits are sent on the cable. So when they say "340MHz", that is 3.4Gbits/sec on each differential pair. So it's actually a pretty high speed. The clock must be multiplied up, when it comes across the cable, to do the sampling. I'm not sure how the sampling mechanism works (how the clock phase is adjusted). R 0 1 2 3 4 5 6 7 8 9 \ G 0 1 2 3 4 5 6 7 8 9 \__ Enough for a 3x8bit RGB pixel B 0 1 2 3 4 5 6 7 8 9 / 10 bit pattern decoded to 8 actual bits ? _________ Clk _________| | http://en.wikipedia.org/wiki/8B10B So that's to give you some idea when reading the article, why some "stuff" is in MHz and some in GHz. It depends on whether they're referencing "bits" on the cable, or the clock pattern. The clock would be multiplied by ten, to make a means to sample each bit value. And the phase needs to be adjusted, so the sampling is dead center (spot with largest eye opening), on the waveforms on the cable. The reason for making 10 bit patterns, to carry 8 bits of data, is for DC balance (a bit is sent, just to make the number of ones and zeros close to equal) The higher the clock rate on the cable, the shorter the max length of the HDMI cable. In case you were headed off to another room with that signal. For a monitor next to the computer, this should not be a problem. It's only when it comes to selecting "premium" cables to reach the TV in the next room, you're in "wallet emptying mode". So in many ways, HDMI and VGA have equivalent problems - on VGA, the usable resolution drops, the further away you try to go, and something similar is happening on HDMI. But VGA is analog and HDMI is digital, so quite different in how the signal is getting there, and how gradual or abrupt any cable length issues are. HDMI gets "snow" on the screen, when the cable is too long. HTH, Paul |
#3
|
|||
|
|||
GA-Z87X-UD5H & GA-Z87X-UD4H and video outputs
On 22/02/2014 15:21, Paul wrote:
Jim wrote: I'm stuck between one of these mainboards right now and apart from 2 LAN's, 2 extra SATA 6 ports there does not seem to be much between them. However there is one issue i'm unsure off and how it could effect me in the future and it's to do with using onboard video from the CPU (still don't know what cpu to get yet), my current monitor only has VGA or DVI for connections so i use DVI right now from my video card (HD6450) and HDMI part of card to the tv to watch stuff from the pc on the TV and that works fine for now but when i move over to the Z87 chipset I presume both boards will run DVI for monitor ok AND the HDMI to TV will work fine as well. However what happens when i change my monitor in the future and i suspect monitor will only take HDMI with both the GA-Z87X-UD5H & GA-Z87X-UD4H be able to output to both HDMI's, i know the GA-Z87X-UD5H has 2 HDMI sockets but GA-Z87X-UD4H only has one and something called a display port which i have never heard of before any advice is welcome. JIm DisplayPort, some of them support dual mode operation. In such a case, a passive DisplayPort to HDMI adapter can be used. Such a solution should handle 1920x1200 with reduced blanking (suited to an LCD), but I can't say whether higher resolutions are possible. I don't know if the intention of dual-mode DisplayPort is to go to 340MHz or not. http://en.wikipedia.org/wiki/Displayport "However, Dual-Mode DisplayPorts are designed to transmit a single-link DVI or HDMI 1.2/1.4 protocol across the interface through the use of an external passive adapter that selects the desired signal and converts the electrical signaling from LVDS to TMDS. Analog VGA and dual-link DVI require powered active adapters to convert the protocol and signal levels, and do not rely on Dual-Mode. VGA adapters are powered by the DisplayPort connector, while dual-link DVI adapters may rely on an external power source (see compatibility with HDMI, DVI and VGA)." You can try to line up some of the text in that article, with this one. http://en.wikipedia.org/wiki/Hdmi#Version_1.4 The 165MHz clock, gets you to 1920x1200. Running at 340MHz on HDMI, would take you to a higher resolution (at 60Hz). So the DisplayPort should get you to at least 1920x1200. The pixel clock is a bit of a misnomer. For each clock tick, around ten bits are sent on the cable. So when they say "340MHz", that is 3.4Gbits/sec on each differential pair. So it's actually a pretty high speed. The clock must be multiplied up, when it comes across the cable, to do the sampling. I'm not sure how the sampling mechanism works (how the clock phase is adjusted). R 0 1 2 3 4 5 6 7 8 9 \ G 0 1 2 3 4 5 6 7 8 9 \__ Enough for a 3x8bit RGB pixel B 0 1 2 3 4 5 6 7 8 9 / 10 bit pattern decoded to 8 actual bits ? _________ Clk _________| | http://en.wikipedia.org/wiki/8B10B So that's to give you some idea when reading the article, why some "stuff" is in MHz and some in GHz. It depends on whether they're referencing "bits" on the cable, or the clock pattern. The clock would be multiplied by ten, to make a means to sample each bit value. And the phase needs to be adjusted, so the sampling is dead center (spot with largest eye opening), on the waveforms on the cable. The reason for making 10 bit patterns, to carry 8 bits of data, is for DC balance (a bit is sent, just to make the number of ones and zeros close to equal) The higher the clock rate on the cable, the shorter the max length of the HDMI cable. In case you were headed off to another room with that signal. For a monitor next to the computer, this should not be a problem. It's only when it comes to selecting "premium" cables to reach the TV in the next room, you're in "wallet emptying mode". So in many ways, HDMI and VGA have equivalent problems - on VGA, the usable resolution drops, the further away you try to go, and something similar is happening on HDMI. But VGA is analog and HDMI is digital, so quite different in how the signal is getting there, and how gradual or abrupt any cable length issues are. HDMI gets "snow" on the screen, when the cable is too long. HTH, Paul What the hell was I doing posting about Gigabyte boards in an Asus group? These late nights were doing me in, sorry for the huge delay in getting back to you Paul, Well i have finally got my head round things and just bought an Asus Z87 Deluxe with an i7-4770K and 16GB of RAM, I'll be using IGP so no need for video card and i have bought my Display Port adaptor so that is on the way, so no doubt i'll be posting here later LOL. once again sorry for delay and thanks for all your help. Jim |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
GA-Z87X-UD4H: No USB Power? | (PeteCresswell) | Gigabyte Motherboards | 2 | November 9th 13 07:52 AM |
Any ATSC tuner cards with video *outputs* ??? | PC Guy | Homebuilt PC's | 6 | January 17th 12 08:02 AM |
Video Card With Two Digital Outputs, But No Cooling Fan? | (PeteCresswell) | Asus Motherboards | 2 | May 22nd 07 05:03 AM |
Autodetecting number of video outputs from NVIDIA driver. | Zem | Nvidia Videocards | 4 | October 11th 05 09:10 PM |
Matrox outputs audio from DVD but no video | Bill | Matrox Videocards | 1 | January 30th 04 03:30 AM |