3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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HP 2310g is an Upcoming 23-inch 120Hz 3D-ready LCD Monitor

March 29th, 2010 · 4 Comments · GeForce 3D Vision

Last week during HP’s Workstation International Media Event in Santa Monica, Los Angeles there were a lot of interesting news and product announcements from HP, but one thing has caught my eye especially, since it was a stereo 3D related product. I’m talking about the HP 2310g LCD display that was been showcased at the event along with a HP Z400 workstation (have in mind that the HP 2310g 3D-ready monitor is a consumer-oriented product, not a professional one!), but let me tell you what is interesting about this product. HP 2310g is a 23-inch 120Hz 3D-ready LCD monitor with Full HD resolution that works with Nvidia’s 3D Vision active shutter glasses, but will probably also be compatible with other active shutter solutions when/if they come later thus year.

Here is a short video I made at the event showing the HP 2310g display in action playing a stereoscopic 3D trailer of the movie How To Train Your Dragon in 3D by DreamWorks. As you can see this display does not rely on matted screen, but instead uses glossy surface, resulting in some reflections being visible on the screen. Just have in mind that the demonstration was pretty much outside on a bright sunny day and a lot of external light is coming all around the screen (not very good conditions for a glossy display), so in normal at-home usage the reflections on the screen should be much less or none at all. Besides the disadvantageous possibility of annoying reflections the glossy display also brings some advantages like better color reproduction and contrast of the image, along with better viewing angles.

Pete Ellis from HP Displays Business Unit (on the picture above, in front of the HP 2310g display) was available during the demonstration to answer some questions about the 120Hz display. I’m sure the first question you are going to ask is when to expect the monitor on the market and what will be the price? Unfortunately there is still no release date announced or pricing for the display, but it will most likely be available on the market before the end of this year and should not cost more than the currently available alternatives from other companies. So the HP 2310g 120Hz LCD display has a 16:9 aspect ratio and Full HD resolution of 1920×1080 pixels and will supposedly be with a 2ms response time and 400 cd/m2 maximum brightness level. Have in mind that these are not official specifications and since the product is not yet available on the market it might be a bit different when it becomes available.

And above you can watch the full presentation called “A Perspective on 3D today” during the HP Workstation International Media Event presented by Pete Ellis. The presentation outlines some of the things HP is working on in the filed of stereoscopic 3D technologies – initiatives like the 3D Consortium and upcoming products like the HP 2310g 3D-ready display…

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Acer Aspire GD245HQ 120Hz 3D Vision-ready Monitor Review

January 26th, 2010 · 131 Comments · GeForce 3D Vision


If you’ve already watched the unboxing video of the Acer Aspire GD245HQ (same in terms of hardware as Acer GD235HZ) display you should know that I’ve been testing the 24-inch (23.6″ to be exact) Full HD display that is 120Hz and 3D Vision compatible. The expectations for this display are quite high, especially after the release of the Alienware OptiX AW2310 that did not provide a completely problem free 3D gaming experience (or so I’m reading, haven’t tested it personally) as we all hoped it would as it being in the next generation of 120Hz displays. This does not mean that the Alienware or that the Acer are not better in terms of what they offer to the user and in general compared to the previous generation of 22″ displays, but also does not mean that the fulfill every expectation consumers had… probably we just expected too much to happen in too little time. Anyway both Alienware and Acer make a good step towards better S3D experience, but lets get back to a more detailed look on the Acer GD245HQ that I’ve tested and compared to the 22″ ViewSonic VX2268WM and Samsung 2233RZ (the first generation 120Hz models).

Let me start with the official specifications:

Display size: 60 cm (23.6″) Wide, 16:9 Full HD, 521×293 mm
Panel Technology: TN (Twisted Nematic)
Resolution: 1920×1080 @ 120Hz
Pixel pitch: 0.2715 mm
PPI (pixels per inch): 92
Horizontal Frequency: D-Sub & HDMI 30-83KHz, DVI 30-140KHz
Vertical Frequency: D-Sub & HDMI 56-75Hz, DVI 56-120Hz
Contrast ratio: 80000:1 (Dynamic)
Brightness: 300 cd/m2
Response time: 2 ms
Colours: 16.7M (6 bit + HiFRC)
NTSC Colour gamut coverage: 72%
Internal speakers: N/A
Viewing angle CR 5:1: 176°/176°
Viewing angle CR 10:1: 170°/160°
Tilt / Swivel / Pivot: Tilt. -5°/15°
Height Adjustment: No
Wall-mount: 100 mm x 100 mm
Kensington lock support: Supported
Connections: Analog (D-sub), Digital (DVI-D), HDMI (Optional), Internal Power Supply
Power consumption: Energy Star – On 38.2W, Off 0.85W, Stand by 1.85W
Dimensions: 574.8×417.8×194.4 mm
Weight: 5.8 Kg

Note that the above official specifications do not mention anything about built-in speakers as the monitor does not have such (and why would it need), although it seems at some places selling the display you can see speakers mentioned. This is a bit misleading and the seller had mistaken the presence of a stereo audio jack on the display and cable in the kit thinking there are built-in speakers, but it is a completely different thing. Since the monitor has an HDMI and this allows you to pass audio through it, but you probably wouldn’t want to hear it through some crappy built-in speakers you have the option to output the audio from the HDMI to a decent set of external speakers. And the stereo cable is for just that, to output the audio passing through the HDMI (if any) to an external speakers, and it is clearly not for built-in speakers as there are no such in the display!

The display does come with DVI-D, DSUB15 and HDMI connectors, but you can use the 2D/3D mode in 120Hz only on the Dual-Link DVI. There is a Dual-Link DVI cable and an analogue DSUB15 video cables, bundled with the monitor, there is no HDMI cable, but as I already said you cannot send more than 60Hz as an input signal to the display through HDMI or DSUB15. Apart from that there is the audio out cable (for HDMI audio output) and of course the power cable, the expected manuals and a CD with documentation and control software for the display.


The external look of the Acer GD245HQ is quite nice, mostly black with just a little bit or orange on the monitor stand. And not to mention that unlike the 22-inch ViewSonic and Samsung displays here with the Acer, the stand is much more stable preventing the monitor from starting to swing around at the slightest vibration of your desk. A bit of a disappointment for some people might be the lack of height adjustment in the stand and that is kind of reasonable, especially having in mind that Acer’s display is with aspect ratio of 16:9 as compared to 16:10 for the ViewSonic and Samsung. This might not seem too significant, but when you compare a 22″ and the 24″ monitor side by side they do not seem very different in terms of size at first look, the ViewSonic is even a bit higher as you can see on the picture above. For me personally the 16:9 is better for stereoscopic 3D gaming as there is the wider aspect gets better coverage for the peripheral vision, but this might differ from person to person and it seems that people even want 1920×1200 displays with 16:10 aspect.


And now of to the bleeding of the LCD panel of the Acer GD245HQ. The above image is taken in a dark environment with the display showing a completely black image with a camera set a very high ISO and afterwards the image has been processed with an image editor just to enhance the visibility of the bleeding. In reality there is not that much light passing through the LCD panel from the backlight, but you can clearly see that the most light bleeding is coming from the left side of the panel, some from the top and just a bit from the right and bottom parts of the screen.


Now, don’t think that there is no bleeding on the first generation of 120Hz displays, there is as there is on a lot of other monitors. On the picture above you can see that the ViewSonic display has the most bleeding coming from the bottom part of the screen and some from the left top. This picture comparing the Acer and ViewSonic displays next to each other has not been enhanced in an image editor, just shot with high ISO settings on the camera. As you can see the light bleeding here is less apparent and it is still more visible than what you’ll probably see with a naked eye directly looking at the display. In order to get more uniform backlight and less bleeding we’ll have to wait for the first 3D-capable displays to come out that use LEDs for backlight, but this also does not guarantee better results… it still depends on how good the implementation is.


As with the previous generation of 120Hz 3D-ready displays the Acer GD245HQ is also using a fast response TN panel with 2ms response rate for the pixels compared to 3ms (for 3D mode) in the first generation. As a direct result of this we can expect to have less ghosting and this is true, the ghosting is actually less as you can see on the image above. It is taken through one of the lenses of the 3D Vision glasses in order to show you how much from the second image (the one for the other eye) is actually visible and thus creating the ghosting effect. Look at the center part of the pictures as some of the outer parts are not covered by the shutters lens because of it being too small for the camera lens. The important thing is that the ghosting is less, making it more comfortable to enjoy 3D content without annoying “shadows” lurking around some objects on the screen, or so it seems…


I’ve noticed something else you can see on the pictures above – the weird red/green ghosting that rarely appears on some images, it is probably related to some specific colors present. The both Ghosting comparison images were made from the game Tomb Raider Underworld on Lara’s boar before going underwater, but there are some other games and scenes where you can see the same strange ghosting. I’ve also seen it present for a brief moment on some videos, but I believe that this is something related to software issues and thus can lets say be fixed with a driver update for 3D vision for example. The above images are sent to Nvidia and lets see if they can figure out what is the issue and provide us with a fix, but as I said the above issue is rarely seen and you might not even notice it if you are not playing enough attention.


And now off to some measuring of the Acer GD245HQ with the help of an X-rite i1 Display 2 colorimeter. Calibrating the display colors does bring a bit of improvement in color reproduction (we are talking about a TN panel after all), but the most serious area where we have trouble with colors still remains – the very dark areas. There are not that much adjustments being done to the primary colors and the color reproduction before and after calibration changes just a bit – there is not a big difference. The brightness level after calibrating however might be an issue, as you can see the display brightness measured after calibration was just 171.6 cd/m2 and that is not that very good for when you wear the 3D Vision shutter glasses and play in S3D mode as there is an additional brightness drop. The maximum level of brightness I was able to measure was about 240 candelas per square meter which is still a bit less that the 300 cd/m2 stated in the specifications. The black level was measured to be about 0,2 cd/m2 which in turn resulted in quite good contrast ratio of almost 900:1, which in turn with the good sharpness of the display makes it noticeably better performing especially when watching videos in 2D or stereo 3D. Even when setting up the max brightness the display still manages to maintain a contrast ratio of about 900:1, so you don’t need to worry too much even if you play in stereo 3D mode with maximum brightness. After all by wearing the 3D Vision shutter glasses you are loosing some of the light and the black seems darker and closer to true black and the lightest objects are not so light anymore.

The next important thing for every gamer is the input lag, or at least it should be, no matter if the games will be played in 2D or S3D mode. In my last input lag tests I was able to confirm that the 120Hz Viewsonic has little to no input lag compared to a good CRT monitor, so how well does new 120Hz Acer GD245HQ compare to that, you can see on the video. Use the pause button to compare the numbers on both displays, the video is shot with a camera recording at 240 fps which is more than enough for the displays 120Hz (120fps). Slower response (lower number of milliseconds) means input lag (delay) of the image because of the processing before being show on the screen. The Acer shows from zero to about 15-16 ms delay compared to the ViewSonic, but have in mind that both displays are running a clone image (using DVI splitter) with resolution of 1680×1050 which is not the native one for the Full HD Acer display!

The next video shows the top/bottom screen ghosting issue on the Acer. As in the first generation of 3D capable 120Hz displays the second generation Acer GD245HQ still has some ghosting at objects show on the top and bottom parts of the screen as opposed to seeing the same object in the center part of the screen. Notice the shadow in front of the wind turbine in the video when it is being moved to the top or bottom parts of the screen. But generally as the ghosting is less on the Acer the top/bottom ghosting is also less.

This here is another interesting effect that I’ve noticed in the game Borderlands, look at how if you leave the cable onscreen and then move a bit there is an afterimage left for a bit that fades in another moment. This issue is also present on the 120Hz ViewSonic displays, but it takes more time with with the cable static on screen for the afterimage to appear. So far I’ve noticed this only in Borderlands, so it might be something related just to that game, but it is there and it handles differently on both 3D displays. The above is of course visible when you shoot the video through the shutter glasses in S3D mode, not when you look directly at the screen without them. Also watch the HD version of the clip to see it more clearly!

Another thing to note is that the “grainy texture” or more like a scanlines look (brighter lines) that could be seen on some scenes when in 3D mode on the first generation of 120Hz screens is now gone, or to be more exact much, much, much… harder to notice, so it should not bother you anymore, if it was bothering you on the ViewSonic or the Samsung displays.

So to sum up all things said so far, the Acer GD245HQ is better designed, better built and performing better than the first generation 120Hz displays from ViewSonic and Samsung. It has an updated list of parameters, offers less ghosting, and although it brings some other new possible issues, in general it is more of a good improvement. If you wanted this to be the perfect and absolutely problem free monitor for stereoscopic 3D gaming, like a lot of people did, you might be a bit disappointed, but that is because we all probably had set too high expectations for it. After testing it personally I’m ready to make the switch to the Acer, when it officially becomes available on the market next month, as what I tested was a testing sample produced in November 2009. I might’ve missed something in the review above so please feel free to ask if you want to know something else or to try on the Acer as I’ll continue testing it for a few more days before having to return it…

Acer GD235HZ/GD245HQ is already available for $399.99 USD at Amazon

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Alienware Revealed OptX AW2310 23″ 3D Full HD Widescreen Monitor

January 7th, 2010 · 13 Comments · GeForce 3D Vision


CES is giving us a lot of news and the next interesting one is the announcement of the 23-inch
Full HD 3D Vision compatible Alienware OptX AW2310 monitor. The monitor is equipped with a 120Hz panel with 3 ms response time and high brightness (400 cd/m2 compared to the normally 300 cd/m2 on other 3D displays) and contrast levels (up to 80000:1, but dynamic), although it is not very clear what panel is being used, and this might be one of the first monitors using the new 23″ LG 120Hz panels announced a month ago.


Alienware OptX AW2310 has a nice-looking design and has an option to adjust the swivel, tilt and height to suit your personal preferences and all that you can get for $499, although the display is currently listed only on some local Alienware websites (New Zealand and Japan for instance), but will probably soon appear on others…


Alienware claims that this display also has a low input lag, but does not state a number of milliseconds. They also mention something interesting that the input lag is low “In DVI mode only” which is probably related to the fact that you need to use the DVI for 3D mode and/or when playing with 120Hz refresh rate…. still this needs a little further clarification.

Specifications of the Alienware OptX AW2310:

Panel Size: 23″ Widescreen, 16:9
Panel Type: TN – Twisted Nematic
Native Resolution: 1920 x 1080 (Full HD)
Contrast Ratio: 80000:1 (dynamic)
Brightness: 400 cd/m2 (typical)
Response Time: 3ms (typical) (gray-to-gray)
Viewing Angle : 170°/ 160°
Color Support : 16.7 million colors
Color Gamut: 83.4%
Refresh Rate: 120Hz (3D Capable)
Video Connectivity: DVI x1, HDMI x1
Audio Connectivity: Yes; Audio In and Out (2.0)
USB Ports : Yes: 4 USB 2.0
User Input / Controls: Touch Capacitive OSD Buttons
Stand: Tilt, Swivel and Height Adjustable

More information about Alienware OptX AW2310 on Alienware (NZ)

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