如果您曾在显示器之间争论过任何时间，那么您就会遇到“G-Sync”和“FreeSync”这两个术语。除非您是寻求更好性能的游戏玩家，否则这些术语对您来说意义不大。
但是了解这些术语的含义以及自适应同步技术的工作原理将帮助您就使用哪种显示器做出最佳决定。
什么是自适应同步？
FreeSync和G-Sync都是(FreeSync)自适应同步的形式。如果您曾经玩过游戏并经历过屏幕撕裂、抖动或其他图形错误，您就会知道这种体验会带来多大的破坏性。
这些错误经常发生，因为计算机的图形处理单元(graphics processing unit)( GPU ) 提供的帧速率与显示器的刷新率不一致。自适应同步(Adaptive sync)是显示器刷新率与GPU帧率相匹配的过程。
监控刷新率
大多数显示问题是由于刷新率之间的差异而发生的。大多数现代显示器每秒刷新大约 60 次，即 60 Hz。但是，也有75 Hz、120 Hz、144 Hz 甚至 240 Hz 的显示器(75 Hz, 120 Hz, 144 Hz, and even 240 Hz monitors)。如果您拥有可以提供更高帧速率的显卡，(graphics card that can deliver higher frame ratess)这些设备可以提供更好的性能。
当显示器的刷新率和GPU产生的帧率不匹配时，就会出现屏幕撕裂和其他图形问题。当屏幕图像的上半部分与下半部分不同步时，您可以在上面的屏幕截图中发现屏幕撕裂。
可以这样想：较旧的游戏通常不是图形密集型的，因此不需要自适应同步来使GPU的帧速率与显示器的刷新率相匹配。
另一方面，更现代的游戏甚至会对高端GPU(GPUs)造成压力。Microsoft Flight Simulator就是一个很好的例子。即使是高端游戏计算机也可能很难每秒产生超过 30 到 45 帧。
当游戏的帧率高于显示器的刷新率时，由于显示器无法跟上，屏幕会撕裂和卡顿。
FreeSync 与 G-Sync
FreeSync和G-Sync都旨在平滑显示器上的图像显示，但它们通过不同的方法来实现这一点。(FreeSync)这两种技术在硬件层面也有所不同。两者的主要区别在于：FreeSync是AMD技术，而G-Sync是NVIDIA技术。
什么是自由同步？
FreeSync由AMD显卡使用，因此它不是NVIDIA用户可用的选项。它也不是在每台显示器上都可用。只有支持VESA Adaptive-Sync 的(VESA Adaptive-Sync)显示器才能使用FreeSync。兼容的显示器让其内部板处理所有渲染和处理以正确显示图像。FreeSync可在HDMI和DisplayPort上运行。
然而，FreeSync品牌不仅仅是随意应用于兼容的显示器。这些显示器经过了一系列严格的测试，并且必须满足某些基准才能获得FreeSync品牌的资格。
在成本方面，兼容FreeSync的显示器往往比同类 G-Sync 显示器更实惠。这主要是因为FreeSync使用(FreeSync)VESA创建的开源标准。
什么是 G-Sync？
G-Sync是 NVIDIA 的FreeSync的自适应同步替代方案。FreeSync使用开源程序作为其基础，而G (FreeSync)-Sync(G-Sync)则依赖专有芯片进行渲染和处理。这导致G-Sync兼容显示器的价格略高。多亏了这一点，人们普遍认为G-Sync是一种卓越的技术——但这并不完全正确。
G-Sync技术主要分为三种类型： G-Sync、G-Sync Ultimate和G-Sync Compatible。G-Sync 是标准选项，而G-Sync Compatible是更经济实惠的选项。G-Sync Ultimate是最昂贵的选择，因为显示器必须符合极其严格的标准才能合格。
FreeSync 对比 G-Sync(FreeSync Vs. G-Sync)：哪个更好？
在FreeSync(FreeSync)和G-Sync之间进行选择比看起来要复杂得多，但有一个方面使它成为一个简单的选择。如果您有一台带有AMD显卡的机器并且您不打算换掉它，那么 FreeSync(FreeSync)是您唯一的选择。
另一方面，如果您有NVIDIA 显卡(NVIDIA graphics card)，G-Sync是您的选择。如果您从头开始构建机器，则更多变量会发挥作用。
在较低的分辨率下，两种技术之间的性能差异更难以注意到。在 1080p 和 60Hz 时，您可以看到差异，但通常很小，不值得额外花费。如果您打算推动更高的性能，但又想尽可能省钱，FreeSync在钱包上更友好。
如果您的目标是绝对最高性能，尤其是 4K 和HDR，那么请选择G-Sync。虽然FreeSync完全够用并且在大多数情况下都表现良好，但G-Sync在更高的性能水平上更胜一筹。
G-Sync Ultimate级别每时每刻都胜过 Freesync，而NVIDIA在(NVIDIA)GPU(GPUs)方面是目前的市场领导者。如果图形成就或破坏您的体验，请坚持使用G-Sync。
FreeSync vs G-Sync: Display Technology Explained
If you havе spent any time at all debating between monitors, then you’νe encountered the terms “G-Sync” and “FreeSync.” Unless you are a gamer looking for better performance, the terms likely don’t mean much to you.
But knowing what the terms mean–and how adaptive sync technology works–will help you make the best decision about what monitor to use.
What is Adaptive Sync?
Both FreeSync and G-Sync are both forms of adaptive sync. If you have ever played a game and experienced screen tearing, juttering, or other graphical errors, you know how disruptive the experience can be.
These errors often happen because the frame rate delivered by the graphics processing unit (GPU), of a computer and the refresh rate of the monitor do not line up. Adaptive sync is the process by which the refresh rate of the monitor is matched to the frame rate of the GPU.
Monitor Refresh Rates
The majority of display problems occur because of a disparity between refresh rates. Most modern monitors refresh around 60 times per second, or 60 Hz. However, there are also 75 Hz, 120 Hz, 144 Hz, and even 240 Hz monitors. These devices can deliver better performance if you have a graphics card that can deliver higher frame ratess.
Screen tearing and other graphical issues occur when the refresh rate of the monitor and the frame rate produced by the GPU do not match up. You can spot a screen tear as in the above screenshot when the top half of the screen image is out of sync with the lower half.
Think of it like this: older games are usually not graphically intensive, so adaptive sync isn’t needed to match the frame rate of the GPU with the refresh rate of the monitor.
On the other hand, more modern titles can strain even high-end GPUs. Microsoft Flight Simulator is a good example; even a high-end gaming computer might have a hard time producing more than 30 to 45 frames per second.
When the framerate of a game is higher than the refresh rate of a monitor, the screen will tear and stutter as the display won’t be able to keep up.
FreeSync Vs G-Sync
Both FreeSync and G-Sync are designed to smooth out the display of an image on a monitor, but they approach this through different methods. Both technologies differ on a hardware level, as well. The primary difference between the two of them is this: FreeSync is an AMD technology, while G-Sync is an NVIDIA technology.
What is Freesync?
FreeSync is used by AMD graphics cards, so it is not an option available to NVIDIA users. It also isn’t available on every monitor. Only displays that support VESA Adaptive-Sync can utilize FreeSync. Compatible monitors let their internal boards handle all of the rendering and processing to correctly display the image. FreeSync works over both HDMI and DisplayPort.
The FreeSync brand isn’t just haphazardly applied to compatible monitors, however. The displays are put through a strict series of tests and must meet certain benchmarks in order to qualify for the FreeSync branding.
In terms of cost, FreeSync-compatible monitors tend to be more affordable than the comparable G-Sync monitors. This is primarily because FreeSync uses the open-source standard created by VESA.
What is G-Sync?
G-Sync is NVIDIA’s adaptive sync alternative to FreeSync. While FreeSync uses an open-source program as its base, G-Sync relies on a proprietary chip for rendering and processing. This results in G-Sync compatible monitors carrying a slightly higher price tag. Thanks to this, there is a general sense that G-Sync is the superior technology–but this is not quite true.
There are three primary types of G-Sync technology: G-Sync, G-Sync Ultimate, and G-Sync Compatible. G-Sync is the standard option, while G-Sync Compatible is a more budget-friendly option. G-Sync Ultimate is the most expensive choice, as the monitor has to meet exceedingly strict standards to qualify.
FreeSync Vs. G-Sync: Which One is Better?
Choosing between FreeSync and G-Sync is more complicated than it may appear, but there is one aspect that makes it a simple choice. If you have a machine with an AMD graphics card and you have no plans to swap it out, FreeSync is your only option.
On the other hand, if you have an NVIDIA graphics card, G-Sync is your pick. If you are building a machine from the ground up, more variables come into play.
At lower resolutions, the performance difference between the two technologies is more difficult to notice. At 1080p and 60Hz, you can see a difference, but it is often small and not worth the extra cost. If you plan to push higher performance but want to save money where you can, FreeSync is friendlier on the wallet.
If you are aiming for the absolute highest performance, especially with 4K and HDR, then choose G-Sync. While FreeSync is perfectly adequate and performs quite well in most situations, G-Sync is superior at higher performance levels.
The G-Sync Ultimate level outperforms Freesync at every turn, and NVIDIA is the current market leader with regard to GPUs. If graphics make or break your experience, stick with G-Sync.
