Subject: Displays | June 20, 2018 - 03:54 PM | Jeremy Hellstrom
Tagged: C32HG70, Samsung, freesync, freesync 2, hdr, quantum dots, 144hz
There is a lot to parse in Guru 3D's review of the Samsung C32HG70 a 32", 1440p, 144Hz curved VA panel as they delve into details about HDR and FreeSync as well as discussing the merits of 4k versus 2560x1440 or 3440x1440. If you are already familiar with those topics you can jump into the meat of their review of this impressive panel. The display offers great SDR performance but truly shines when you enable HDR and install the latest firmware updates, after which you can test your experience in Ultimate FreeSync which offers a dynamic range of 48-144Hz or in Standard which limits the range to 120-144Hz to prevent tearing which might occur in some setups. There is a lot to go through in this review, so you might as well get started.
"This Quantum Dot 2560x1440 monitor can do 144Hz combined with FreeSync and FreeSync2. That eliminates stutter and tearing while gaming in HDR. The Samsung C32HG70 is fitted with a VA panel offering proper image quality, connectivity, and features."
Here are some more Display articles from around the web:
- FreeSync 2 in Action: How Good Is It (Right Now)? @ TechSpot
- AOC G2590PX 24.5in 144Hz Gaming Monitor @ Kitguru
- AOC AGON AG352UCG6 Gaming Monitor @
- MSI Optix MPG27C RGB Gaming Monitor @ Kitguru
Ultrawide monitors have become an enormous trend in PC gaming over the last 3-4 years. In late 2014 when LG launched the first PC monitors with a 21:9 aspect ratio, I indeed was a skeptic. To me, it seemed like such a radical new aspect ratio would be wrought with game incompatibility, and wouldn't offer much of an advantage over two monitor setups for productivity.
And in the beginning, this was mostly the case. In 2014, games didn't even enable the option for 21:9 aspect ratio resolutions, and those that did, generally resulted in distorted image and FOV settings.
However, gamers wanted these ultrawide aspect ratio displays, and the game support soon followed. Now, ultrawide monitors are a staple of every monitor manufacturer's product lineup.
What we are looking at today though, is the most intense of all of the ultrawide monitors, the 49" Samsung CHG90. And it just so happens to be one of the first AMD FreeSync 2 displays.
Still in the ultrawide category, the CHG90 moves away from the more traditional 21:9 ultrawide aspect ratio to a wider and squatter 32:9. This aspect ratio allows Samsung to maximize the width of the CHG90 while keeping the display short enough not to engulf your entire wall.
Essentially, you can look at this display as two 27" monitors sitting side-by-side, without the pesky bezel in the middle. Similarly, the resolution of the CHG90 matches the effective resolution of two 1080p monitors sitting next to each other, with a total resolution of 3840x1080.
To achieve such a big display size in a still relatively usable form factor, the CHG90 display features a 1800R curvature. This figure refers to the measurement of the resulting radius that the display would make if it continued to make a full circle. For example, a 3000R display would have less of a curve than a 1800R display.
The curve on the CHG90 isn't quite like any other display we've seen, however. Due to the immense size of the display, the entire panel isn't curved. The curve stops about 6 inches from the edge of either side of the screen.
Subject: Displays | June 9, 2017 - 11:24 AM | Ryan Shrout
Tagged: Samsung, hdr, freesync 2, freesync, CHG90, CHG70, amd
Samsung made a surprise announcement this morning, taking the wraps off of the first FreeSync 2 monitors to grace our pages, officially. These gaming displays come in three difference sizes, one of them incredibly unique, and all with HDR support and Quantum Dot Technology to go along with the variable refresh rate technology of FreeSync.
All three displays utilize the QLED Quantum Dot tech first showcased in the QLED TV lineup launched just this past January at CES. It uses a new metal core and has some impressive color quality capabilities, going to 125% of the sRGB color space and 95% of the DCI-PE color space! I don't yet know what the peak luminance is, or how many backlight zones there might be for HDR support, but I have asked Samsung for clarification and will update here when I get feedback. All three displays use VA panels.
All three displays also become the first to pass certification with AMD for FreeSync 2, which we initially detailed WAY BACK in January of this year. FreeSync 2 should tell us that this display meets some minimum standards for latency, color quality, and low frame rate compensation. These are all great on paper, though I am still looking for details from AMD on what exactly the minimum standards have been set to. At the time, AMD would only tell me that FreeSync 2 displays "will require a doubling of the perceivable brightness and doubling of the viewable color volume based on the sRGB standards."
The bad boy of the group, the Samsung CHG90 (part number C49HG90), is easily the most interesting. It comes in with a staggering screen size of 49-inches and a brand new 32:9 aspect ratio with an 1800R curvature. With a 3840x1080 resolution, I am eager to see this display in person and judge how the ultra-wide design impacts our gaming and our productivity capability. (They call this resolution DFHD, for double full HD.) The refresh rate peaks at 144 Hz and a four-channel scanner is in place to minimize any motion blur or ghosting. A 1ms rated response time also makes this monitor incredibly impressive, on paper. Price for the C49HG90 is set at $1499 with preorders starting today on Amazon.com. (Amazon lists a June 30th release date, but I am looking to clarify.)
Also on the docket is the CHG70, available in two sizes, a 32-in (C32HG70) and a 27-in (C27HG70) model. Both are 2560x1440 resolution screens with 16:9 aspect ratios, 1ms response times and FreeSync 2 integrations. That means the same 125% sRGB and 95% DCI-P3 color space support along with the Samsung Quantum Dot technology. Both will sport a 144 Hz refresh rate and an 1800R curvature. The specifications are essentially identical between all three models, making the selection process an easier choice based on price segment and screen real estate. The C27HG70 will be on preorder from Samsung.com exclusively for $599 while the C32HG70 will be on preorder at Newegg.com for $699, just $100 more.
All three displays will feature a Game Mode to optimize image settings for...gaming.
Samsung’s CHG90 extends the playing field for virtual competitors, with its 49-inch design representing the widest gaming monitor available. The monitor delivers a dramatic 1,800R curvature and an ultra-wide 178-degree viewing angle, ensuring that content is clearly visible from nearly any location within a given space. As a result, gamers no longer need to worry about the logistics, expenses, and bezel interference that occur when combining multiple smaller monitors together for an expanded view.
The new CHG90 monitor includes a height adjustable stand (HAS), allowing flexible height adjustment for improved viewing comfort. Designed for the most demanding games, the CHG70 monitor goes a step further with a dual-hinge stand that provides users more precise control over how the display panel is positioned.
In addition to Game Mode, a feature that optimizes image setting for playing games when connected to a PC or a game console, each of the new monitors include a game OSD dashboard, designed to blend seamlessly into game interfaces.
A full table of specifications is below and trust me on this one guys, I am already up in Samsung's and AMD's face to get these monitors in here for review!
Now all we are missing is the power of a Radeon RX Vega card to push this high resolution, high refresh rate HDR goodness!!
Subject: Graphics Cards, Displays, Shows and Expos | January 6, 2017 - 03:19 PM | Jeremy Hellstrom
Tagged: freesync 2, amd
So far we have yet to see a Freesync 2 capable monitor on the floor at CES but we do know about the technology. We have seen Ryan's overview of what we know of the new technology and its benefits and recently The Tech Report also posted their thoughts on it. For instance, did you know that there are 121 FreeSync displays from 20 display partners of various quality, compared to NVIDIA eight partners and 18 GSYNC displays. The Tech Report are also on the hunt for a Freesync 2 display at CES, we will let you know once the hunt is successful.
"AMD has pulled back the curtain on FreeSync 2, the new version of the FreeSync variable refresh rate technology."
Here are some more Graphics Card articles from around the web:
- 31-Way NVIDIA GeForce / AMD Radeon Linux OpenGL Comparison - End-Of-Year 2016 @ Phoronix
- The RX 480 vs. the 290X vs. the GTX 1060 – Has AMD Neglected Hawaii? – 35 games benchmarked @ BabelTechReviews
- The Perf-Per-Watt Of NVIDIA Fermi To Pascal, AMD R700 To Polaris With Newest Linux Drivers @ Phoronix
- ZOTAC GeForce GTX 1070 AMP! Graphics Card @ Custom PC Review
- ASUS STRIX GTX 1060 O6G GAMING @ [H]ard|OCP
Subject: Graphics Cards, Displays | January 3, 2017 - 09:00 AM | Ryan Shrout
Tagged: srgb, lfc, hdr10, hdr, freesync 2, freesync, dolby vision, color space, amd
Since the initial FreeSync launch in March of 2015, AMD has quickly expanded the role and impact that the display technology has had on the market. Technologically, AMD added low frame rate compensation (LFC) to mimic the experience of G-Sync displays, effectively removing the bottom limit to the variable refresh rate. LFC is an optional feature that requires a large enough gap between the displays minimum and maximum refresh rates to be enabled, but the monitors that do integrate it work well. Last year AMD brought FreeSync to HDMI connections too by overlaying the standard as an extension. This helped to expand the quantity and lower the price of available FreeSync options. Most recently, AMD announced that borderless windowed mode was being added as well, another feature-match to what NVIDIA can do with G-Sync.
The biggest feather in the cap for AMD FreeSync is the sheer quantity of displays that exist on the market that support it. As of our briefing in early December, AMD claimed 121 design wins for FreeSync to just 18 for NVIDIA G-Sync. I am not often in the camp of quantity over quality, but the numbers are impressive. The pervasiveness of FreeSync monitors means that at least some of them are going to be very high quality integrations and that prices are going to be lower compared to the green team’s selection.
Today AMD is announcing FreeSync 2, a new, concurrently running program that adds some new qualifications to displays for latency, color space and LFC. This new program will be much more hands-on from AMD, requiring per-product validation and certification and this will likely come at a cost. (To be clear, AMD hasn’t confirmed if that is the case to me yet.)
Let’s start with the easy stuff first: latency and LFC. FreeSync 2 will require monitors to support LFC and thus to have no effective bottom limit to their variable refresh rate. AMD will also instill a maximum latency allowable for FS2, on the order of “a few milliseconds” from frame buffer flip to photon. This can be easily measured with some high-speed camera work by both AMD and external parties (like us).
These are fantastic additions to the FreeSync 2 standard and should drastically increase the quality of panels and product.
The bigger change to FreeSync 2 is on the color space. FS2 will require a doubling of the perceivable brightness and doubling of the viewable color volume based on the sRGB standards. This means that any monitor that has the FreeSync 2 brand will have a significantly larger color space and ~400 nits brightness. Current HDR standards exceed these FreeSync 2 requirements, but there is nothing preventing monitor vendors from exceeding these levels; they simply set a baseline that users should expect going forward.
In addition to just requiring the panel to support a wider color gamut, FS2 will also enable user experience improvements as well. First, each FS2 monitor must communicate its color space and brightness ranges to the AMD driver through a similar communication path used today for variable refresh rate information. By having access to this data, AMD can enable automatic mode switches from SDR to HDR/wide color gamut based on the application. Windows can remain in a basic SDR color space but games or video applications that support HDR modes can enter that mode without user intervention.
Color space mapping can take time in low power consumption monitors, adding potential latency. For movies that might not be an issue, but for enthusiast gamers it definitely is. The solution is to do all the tone mapping BEFORE the image data is sent to the monitor itself. But with varying monitors, varying color space limits and varying integrations of HDR standards, and no operating system level integration for tone mapping, it’s a difficult task.
The solution is for games to map directly to the color space of the display. AMD will foster this through FreeSync 2 – a game that integrates support for FS2 will be able to get data from the AMD driver stack about the maximum color space of the attached display. The engine can then do its tone mapping to that color space directly, rather than some intermediate state, saving on latency and improving the gaming experience. AMD can then automatically switch the monitor to its largest color space, as well as its maximum brightness. This does require the game engine or game developer to directly integrate support for this feature though – it will not be a catch-all solution for AMD Radeon users.
This combination of latency, LFC and color space additions to FreeSync 2 make it an incredibly interesting standard. Pushing specific standards and requirements on hardware vendors is not something AMD has had the gall to do the past, and honestly the company has publicly been very against it. But to guarantee the experience for Radeon gamers, AMD and the Radeon Technologies Group appear to be willing to make some changes.
NVIDIA has yet to make any noise about HDR or color space requirements for future monitors and while the FreeSync 2 standards shown here don’t quite guarantee HDR10/Dolby Vision quality displays, they do force vendors to pay more attention to what they are building and create higher quality products for the gaming market.
All GPUs that support FreeSync will support FreeSync 2 and both programs will co-exist. FS2 is currently going to be built on DisplayPort and could find its way into another standard extension (as Adaptive Sync was). Displays are set to be available in the first half of this year.
Follow all of our coverage of the show at http://pcper.com/ces!