That makes the GD245HQ a highly anticipated monitor, whose design resembles that of the earlier G24, even if only the stand now has a metallic finish.
Hardware: VGA, DVI and HDMI
So this is the third 120 Hz screen on the market, and the hardware is gradually improving from model to the next: the Samsung 2233rz, for instance, only had a single DVI input for instance, but ViewSonic added VGA to its VX2268wm a few months later. The Acer GD245HQ, though, has VGA, DVI and HDMI. It isn't all wonderful news, though, as at this pace, we'll need to wait through another five or six product launches until we get a height-adjustable stand or a USB hub ...
While we're looking at the connectivity, it's a good time to revisit a question that we're often asked: can a HDMI cable carry a 120 Hz signal/?
The answer is 'no'--with the current version of the standard (1.3) at least. Our tests did manage to push the refresh rate above 60 Hz, but only to 75 Hz with a resolution of 800 x 600 pixels. That means you'll have to use DVI--and a Dual Link cable at that--if you want to get up to 120 Hz in 1920 x 1080 pixels.
Responsiveness: record breaking
As you might know, we prefer to examine the responsiveness of a monitor by counting the number of frames of ghosting, those traces that take too long to disappear and end up on top of images that are currently on show, rather than in milliseconds. That's because you can't really compare figures for response time from one display technology to another. Even on two typical 2 ms TN monitors, the results aren't identical. Here's an idea of how the different technologies stand up:
- 5 ms TN: 1.1 colour frame, 0.5 transparent frames (for example: Iiyama Prolite E2208HDS)
- 6 ms e-IPS: 0.4 colour frames, 0.35 transparent frames (for example: Dell 2209WA)
- Average 2 ms TN: 0.8 colour frames, 0.5 transparent frames (for example: Samsung T220)
- 8 ms C-PVA 8: 0.95 colour frames, 0.2 transparent frames (for example: Samsung F2380)
- The best 2 ms TN 2 (not including 120 Hz): 0.35 colour frames, 0.5 transparent frames (the Samsung 2253BW).
|Average ghosting over ten frames|
Even more surprisingly, it also beats the two 120 Hz that are already available. The gap isn't huge, with just half a frame less of ghosting in each case, but it's enough to displace the VX2268wm from the podium, which itself had lead the 2233rz by a similar margin. The icing on the cake is that the input lag is on average only a single frame: taken together, these two scores make this monitor any gamer's new best friend.
Colours: a slight blue tinge
Compare the Acer GD245HQ to other LCD monitors in our Product Face-Off
Contrast tops out at 900:1, which isn't anything to write home about but still perfectly average.
If you're new to this type of monitor, you should know that a 120 Hz display is just one link in the 3D chain: without 3D glasses and a powerful new graphics card from NVIDIA, you won't be able to get the most out of it.