M15X DisplayPort + HDMI port + DVI = 120Hz

Hi guys,

I have been searching all day in the forums for an answer so am just gonna ask here. sorry if this has been asked before.

I am planning to buy an LCD monitor (Samsung 2233RZ) that is 3D capable (120Hz) this is the only available 3D desktop monitor in my area.

Now, since the M15X only has the DisplayPort... will the samsung 2233rz run at 120Hz using the DisplayPort to HDMI and then HDMI to DVI adapters?

I do hope so.

 

Hey !

I had the same problem !

I have an OPTX AW2310 with DVI and HDMI but with HDMI it is impossible to get 120Hz over 1080p resolution.

M15x has a displayport, i bought on ebay a Displayport->DVI-D adapter and tested it on my M11x computer and it was possible to get 1080p resolution at 120Hz so tomorrow I will get my M15x and test but i think it is all right

 

What makes you say that? DVI and HDMI are exactly the same video signal. The only difference is the connector and HDMI carries sound. You should be able to get 120Hz with HDMI or DVI. Also, HDMI->DVI adapters are just simple cables. You can get a HDMI->DVI cable and plug it directly into the monitor DP->HDMI adapter

 

thanks wattos... but will it support 120Hz? I am getting some info that it will only support 60Hz if your connection (laptop to LCD) uses adapters.

the reason for this is obviously to have 3D vision.

 

well, these adapters are simple cables. The graphic card will think you connected a DVI monitor to its DVI port with a simple DVI cable. These are not active adapters which translate the signal.

Also, make sure that you have a nvidia card. There is no ati software/drivers for 3d yet.

 

yup i do have the nvidia 260m that came with my M15x.

i hope it will work coz i am planning to buy right i get off at work.

thanks.

 

Will you please give an update when you have tested it? I have been searching for an answer to this questions aswell for some time now.

 

Because HDMI 1.3 doesn't feature 120hz bandwidth only 1.4a do

In the manual of OPTX Alienware 2310 there is a line telling : 120hz only trought DVI-D

 

So i bought the samsung 2233RZ already. but i am still looking for an adapter (DisplayPort to DVI-D). If i cannot find this adapter i will have to go for a Displayport-to-HDMI-to-DVI-D combo. But i do have doubts it will support 120Hz.

Does anyone of you know the DisplayPort version of the M15x? I read here that I need to have version 1.2 to support 120Hz.

The 2233RZ did work with the 3D vision glasses on my desktop. But that is not my gaming machine (its my wife's YOVILLE gaming machine hahahaha).

 

hey, just get a HDMI - DVI cable ( High Speed HDMI/M TO DVI Male Cable for HDTV 1.5M Black - eBay (item 300463333066 end time Sep-06-10 02:02:09 PDT). and then use the DP->HDMI adapter. This should work out for you ^^

Again, this is a passive adapter. You WILL NOT be using the DP standard at all. As a matter of fact, DP and DVI/HDMI are incompatible. The cards on the M15x are clever and know that you didnt connect a DP monitor but a DVI monitor, and they will use the DVI standard

 

wattos! i have seen this cable adapter in the shop where i bought the Samsung! i will buy it then.

so my setup will be: M15x -> DP-to-HDMI (came with the M15x) -> HDMI-DVI-D-> 2233RZ.

correct?

 

lol be careful not to trip over the crap hanging out the side of your laptop.

 

Phew this has been a confusing post.

Ok to sum up the samsung monitor only has DVI input so thats why he wants it.

3D is not 1080p on this screen so I would sugest looking at something else but he does say thats the only one local to him.

I dont think you need 1.4 hdmi to do 3D but it is better?

Spoke to dell and 1.3 hdmi will work with their alienware 3D screens.

They also said that the ATI 5850 will work with the nvidia adaptor?
Which i have heard from two seperate people at dell as they say it just needs to pass 120hz up the wire.

 

i'm using a DP->HDMI cable supplied with the M15x, going into a Sharp Quattron 1080P(120hz). My TV isn't seeing a 120hz signal in this setup and the Nvidia control panel only lets me select up to 60hz.

 

isnt there a way to say send 120hz and forget the auto config?

 

This setup did not work. I get only 60Hz. I am disappointed...

 

DP->DVI-D won't work too just tried !

 

So this means that the M15x has no chance with nvidia 3D vision. Too bad, I wonder if anyone was ever successful.

@tuxblondinet; what kind of DP->DVI-D adaptor did you use? do you have a link? before i read your reply i was actually thinking about buying this adaptor online. Does your adapter have an additional USB connector? (to supply power).

 

is it a dual-link cable?

quote from wiki found here
"DisplayPort ports can be made so that they are compatible with single-link DVI and HDMI.[147] Compatibility is achieved with dual-mode DisplayPort ports, which are marked with the ++DP logo, using attached passive adapters; active adapters allow signal conversion to dual-link DVI and analog"

so it seems if you want 120hz (which requires dual-link dvi for higher res) you will need something called an active adapter (supplied power through usb perhaps?)

techPowerUp! News :: AMD Intros Affordable DP-DVI Active Adapter for Eyefinity Users

something like this perhaps? i know it's refering to eyeinfinity however it perhaps requires a similar thing. it seems the ++dp doesn't need a seperate plug for the usb, it just must take the power from the inbuilt usb port with the dp.

so i assume it's possible, but really really really annoying.

actually scrap that link, it's limited to 60hz

FOUND IT... but not cheap...
http://accessories.us.dell.com/sna/...etail.aspx?c=us&l=en&s=dhs&cs=19&sku=330-5521

now who's willing to test if it will work

 

@xeroxide: I am very much willing to test it but, I can't purchase online (no credit card) and they don't seem to ship it to the country i am in.

some one has to step up and test it for us.

 

haha fair enough, yeah i just did a quick google search.
it seems that for 120hz to even be possible you need dual link dvi, so that means a DP -> DL DVI adapter (active).
not sure which resolutions will achieve 120hz however, but normally when the maximum resolution is increased, more options for frequencey open up in the lower resolutions. (single link = 1920 x 1080, dual link = 2048 x 1536)

does it say anywhere on the monitor about dual-link?
if it came with a cable, does the cable have all the pins in the dvi or some missing?

 

I just checked the manual, it doesn't say anything about dual-link. It just says "DVI Compliant Digital RGB."

The cable that came with it has all the 24 pins except for the 4 analog pins surrounding the horizontal pin (attached) By the looks of it, it does seem to be a Dual Link interface.

I do believe we will really need that DP-Dual Link DVI active adapter that requires the USB power.

 

yup, i think so too, but i'm going purely theoretical. can't test crap atm... heck my 260m is rotting away on my bookshelf atm.

 

had a good look round, does seem to be the standard at the moment for early 3D monitors. DVI-D dual link.

i didnt realise there were so many dvi standards.

i do think the display port models will come out soon as i read samsung have adopted it.

was told yesterday that dell dont sell the 3D monitor any more or at least the one on the web site. my guess is a new model is comming out?

I did find an other 3D monitor company that uses dvi and vga together iz3d if thats of any use.

for now i think xeroxide and that adaptor will work and thanks for the info.

 

where Can I get the HDMI adapter for m15x

Please

 

you may need to contact dell for that one, i got mine with the m15x in the box.

 

Thanks

 

gave my M15x to my wife, took the desktop, bought the evga gtx 470 SC and installed all my games and 3D vision.

the m15x is now being only used for yoville.... so sad...

 

I asked AMD / ATI, i got this answer:

We understand you're trying to get 120hz selected for the refresh rate for your HDTV / Display. Here is an explanation to why it's not possible.
A 120hz LCD HDTV refreshes at 120hz, although, it will only accept a 60hz or lower input[even if they did accept 120hz inputs, it would simply render it at 60hz and double the frames; 60hz x2=120 instead of TRUE 120hz. In other words, 120hz LCD HDTVs are not TRUE 120hz displays]. Consequently, even if you are gaming at above 120 frames per second, you will not gain the benefit of seeing those additional frames.
Therefore, when connected to a graphics card as a display output, the actual refresh rate will be 60hz.
60Hz vs 120Hz Explained - Overclock.net - Overclocking.net

 

ok if i understand this corectly ( and i guess i dont)

tv / monitor flashes 2 images (one every 60hz) to one eye whilst the other one is updated via the 60hz output of the laptop/pc. makes sense.

 

You will only be able to achieve 120 hz on your M15x with an active adapter, no passive adapters will work on DP due to limitation in bandwidth and it being single link output.

I am getting my active adapter from Dell tomorrow, but from what I have been reading this will not work either. I will post back when I have tested it tomorrow.

 

ddamsa, afaik inap got 120hz working however he's using an ati card and thus was not able to test 3d mode. but the higher res/120hz option was available... may want to pm him and ask to make sure tho.

 

I have one of these:

DELL DisplayPort to Dual Link DVI Adapter for OptiPlex / Latitude / Alienware Laptops / Precision/ Precision Mobile Workstations : Desktop Accessories | Dell

And it works @ 120hz on my m11x

the adapter cost me about $150 AUS or something like that at the time, would be cheaper now the US dollar is good. i just got it on ebay.

It has to be an active adapter that uses USB power


EDIT: i have a Samsung 2233RZ

 

i will be receiving my acre 3d monitor in 2 days, i wanted to get the active adapter from dell, but it says it ships in 3-5 weeks???

do you know anywhere else to get it? hehe

 

i got mine from fry's electronics, but its not cheap. btw i have the same monitor, its pretty sweet.

 

got my adapter in amazon for $85.. hehe..

 

Hi! I have an Alienware M15x w/ 260GTX. Can you confirm that it produces 3DVISION with the Dell adapter you bought and the Samsung 2233RZ ?

Thanks in advance!

 

Can you?

I also do have a M15x with a GeFoce 260M GTX and I'm going to buy a Samsung S27A950D 120Hz monitor.

When using this active Dual Link DVI Adapter, will I be able to:

a) use a refresh rate of 120Hz on 2D applications?
b) display anything in 3D (not necessarily using NVIDIAs 3D Vision)?