The AMD FreeSync Review
by Jarred Walton on March 19, 2015 12:00 PM ESTClosing Thoughts
It took a while to get here, but if the proof is in the eating of the pudding, FreeSync tastes just as good as G-SYNC when it comes to adaptive refresh rates. Within the supported refresh rate range, I found nothing to complain about. Perhaps more importantly, while you’re not getting a “free” monitor upgrade, the current prices of the FreeSync displays are very close to what you’d pay for an equivalent display that doesn’t have adaptive sync. That’s great news, and with the major scaler manufacturers on board with adaptive sync the price disparity should only shrink over time.
The short summary is that FreeSync works just as you’d expect, and at least in our limited testing so far there have been no problems. Which isn’t to say that FreeSync will work with every possible AMD setup right now. As noted last month, the initial FreeSync driver that AMD provided (Catalyst 15.3 Beta 1) only allows FreeSync to work with single GPU configurations. Another driver should be coming next month that will support FreeSync with CrossFire setups.
Besides needing a driver and FreeSync display, you also need a GPU that uses AMD’s GCN 1.1 or later architecture. The list at present consists of the R7 260/260X, R9 285, R9 290/290X/295X2 discrete GPUs, as well as the Kaveri APUs – A6-7400K, A8-7600/7650K, and A10-7700K/7800/7850K. First generation GCN 1.0 cards (HD 7950/7970 or R9 280/280X and similar) are not supported.
All is not sunshine and roses, however. Part of the problem with reviewing something like FreeSync is that we're inherently tied to the hardware we receive, in this case the LG 34UM67 display. Armed with an R9 290X and running at the native resolution, the vast majority of games will run at 48FPS or above even at maximum detail settings, though of course there are exceptions. This means they look and feel smooth. But what happens with more demanding games or with lower performance GPUs? If you're running without VSYNC, you'd get tearing below 48FPS, while with VSYNC you'd get stuttering.
Neither is ideal, but how much this impacts your experience will depend on the game and individual. G-SYNC handles dropping below the minimum FPS more gracefully than FreeSync, though if you're routinely falling below the minimum FreeSync refresh rate we'd argue that you should lower the settings. Mostly what you get with FreeSync/G-SYNC is the ability to have smooth gaming at 40-60 FPS and not just 60+ FPS.
Other sites are reporting ghosting on FreeSync displays, but that's not inherent to the technology. Rather, it's a display specific problem (just as the amount of ghosting on normal LCDs is display specific). Using higher quality panels and hardware designed to reduce/eliminate ghosting is the solution. The FreeSync displays so far appear to not have the same level of anti-ghosting as the currently available G-SYNC panels, which is unfortunate if true. (Note that we've only looked at the LG 34UM67, so we can't report on all the FreeSync displays.) Again, ghosting shouldn't be a FreeSync issue so much as a panel/scaler/firmware problem, so we'll hold off on further commentary until we get to the monitor reviews.
One final topic to address is something that has become more noticeable to me over the past few months. While G-SYNC/FreeSync can make a big difference when frame rates are in the 40~75 FPS range, as you go beyond that point the benefits are a lot less clear. Take the 144Hz ASUS ROG Swift as an example. Even with G-SYNC disabled, the 144Hz refresh rate makes tearing rather difficult to spot, at least in my experience. Considering pixel response times for LCDs are not instantaneous and combine that with the way our human eyes and brain process the world and for all the hype I still think having high refresh rates with VSYNC disabled gets you 98% of the way to the goal of smooth gaming with no noticeable visual artifacts (at least for those of us without superhuman eyesight).
Overall, I’m impressed with what AMD has delivered so far with FreeSync. AMD gamers in particular will want to keep an eye on the new and upcoming FreeSync displays. They may not be the “must have” upgrade right now, but if you’re in the market and the price premium is less than $50, why not get FreeSync? On the other hand, for NVIDIA users things just got more complicated. Assuming you haven’t already jumped on the G-SYNC train, there’s now this question of whether or not NVIDIA will support non-G-SYNC displays that implement DisplayPort’s Adaptive Sync technology. I have little doubt that NVIDIA can support FreeSync panels, but whether they will support them is far less certain. Given the current price premium on G-SYNC displays, it’s probably a good time to sit back and wait a few months to see how things develop.
There is one G-SYNC display that I’m still waiting to see, however: Acer’s 27” 1440p144 IPS (AHVA) XB270HU. It was teased at CES and it could very well be the holy grail of displays. It’s scheduled to launch next month, and official pricing is $799 (with some pre-orders now online at higher prices). We might see a FreeSync variant of the XB270HU as well in the coming months, if not from Acer than likely from some other manufacturer. For those that work with images and movies as well as playing games, IPS/AHVA displays with G-SYNC or FreeSync support are definitely needed.
Wrapping up, if you haven’t upgraded your display in a while, now is a good time to take stock of the various options. IPS and other wide viewing angle displays have come down quite a bit in pricing, and there are overclockable 27” and 30” IPS displays that don’t cost much at all. Unfortunately, if you want a guaranteed high refresh rate, there’s a good chance you’re going to have to settle for TN. The new UltraWide LG displays with 75Hz IPS panels at least deliver a moderate improvement though, and they now come with FreeSync as an added bonus.
Considering a good display can last 5+ years, making a larger investment isn’t a bad idea, but by the same token rushing into a new display isn’t advisable either as you don't want to end up stuck with a "lemon" or a dead technology. Take some time, read the reviews, and then find the display that you will be happy to use for the next half decade. At least by then we should have a better idea of which display technologies will stick around.
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chizow - Thursday, March 19, 2015 - link
See link: http://www.pcper.com/image/view/54234?return=node%...Also: still unaddressed concerns with how and why FreeSync is still tied to Vsync and how this impacts latency.
happycamperjack - Thursday, March 19, 2015 - link
The ghosting problem actually has nothing to do with the G-Sync and FreeSync technologies like the article said, but more have to do with the components in the monitor. So if Asus made a ROG Swift FreeSync version of the same monitor, there would've been no ghosting just like the G-SYNC version. So your example is invalid.chizow - Friday, March 20, 2015 - link
@happycamperjack. Again, incorrect. Why is it that panels from the SAME manufacturers, that possibly use the same panels even, using the same prevaling panel technologies of this time, exhibit widely different characteristics under variable refresh? Maybe that magic G-Sync module that AMD claims is pointless is actually doing something....like controlling the drive electronics that control pixel response variably in response to changing framerates. Maybe AMD needs another 18 months to refine those scalers with the various scaler mfgs?http://www.pcper.com/reviews/Displays/AMD-FreeSync...
"Modern monitors are often tuned to a specific refresh rate – 144 Hz, 120 Hz, 60 Hz, etc. – and the power delivery to pixels is built to reduce ghosting and image defects. But in a situation where the refresh rate can literally be ANY rate, as we get with VRR displays, the LCD will very often be in these non-tuned refresh rates. NVIDIA claims its G-Sync module is tuned for each display to prevent ghosting by change the amount of voltage going to pixels at different refresh rates, allowing pixels to untwist and retwist at different rates."
BenQ for example makes a fine G-Sync monitor, and multiple high refresh 3D Vision monitors well known for their lack of ghosting. Are you going to tell me that suddenly they are using inferior panel tech that can't handle ghosting? This is 2015 and TN panels we are talking about here right? This kind of ghosting has not been seen since circa 2007 when PMVA was all the rage.
AnnihilatorX - Thursday, March 19, 2015 - link
chizow stop your biased preconceptions and actually read the articleAnnihilatorX - Thursday, March 19, 2015 - link
I will summarize it for you in case your prejudice clouds your comprehension1) At no point in the article it finds any performance advantage from FreeSync or Gsync (AMD claims 0.5-1% advantage but that's too small to detect, so we disregard that)
2) Freesync has better monitor choices, including IPS and ones with better specs in general
3) Freesync monitors are about USD200 cheaper, almost half the cost of a decent graphic card
4) Freesync monitors have on-screen dialogues (OSD) that works, Gsync monitor doesn't due to implementation
5) Freesync has better potential in future for support, especially laptops becuase of zero royalty fees and only minor update to hardware
6. Freesync allows users the option to choose whether they want to enable Vsync or not, Gsync locks Vsync to be on. This mean the user can have better latency if they can stand tearing. The important thing is option, having the option is always advantageous
7. AMD claims Freesync works from 9Hz-240Hz wheras Gsync only works from 30Hz to 144Hz.
chizow - Thursday, March 19, 2015 - link
@AnnihilatorX1) You assume the tests conducted here are actually relevant.
2) No, they don't. Nvidia has an IPS in the works that may very well be the best of all, but in the meantime, it is obvious that for whatever reason the FreeSync panels are subpar compared to the G-Sync offerings. Coutesy of PCPER: http://www.pcper.com/image/view/54234?return=node%...
3) Sure they are cheaper, but they also aren't as good, and certainly not "Free" as there is a clear premium compared to non-FreeSync panels, and certainly no firmware flash is going to change that. Also, that $200 is going to have to be spent on a new AMD graphics GCN1.1+ graphics card anyways as anyone who doesn't already own a newer AMD card will have to factor that into their decision. Meanwhile, G-Sync supports everything from Nvidia from Kepler on. Nice and tidy (and dominant in terms of installed user base).
4) OSDs, scalers and such add input lag, while having multiple inputs is nice, OSDs are a feature gaming purists can live without (See: all the gaming direct input modes on newer LCDs that bypass the scalers).
5) Not if they're tied to AMD hardware. They can enjoy a minor share of the dGPU graphics market as their TAM.
6) Uh, this is nonsense. FreeSync is still tied to Vsync in ways THIS review certainly doesn't cover indepth, but that's certainly not going to be a positive since Vsync inherently adds latency. Meanwhile, Vsync is never enabled with G-Sync, and while there is more latency at the capped FPS, it is a driver-side cap and not Vsync enabled.
7) Well, AMD can claim all they like it goes as low as 9Hz but as we have seen the implementation is FAR worst, falling apart below 40FPS where blurring, tearing, basically the image falls apart and everything you invested hundreds of dollars basically became a huge waste. Meanwhile, G-Sync shows none of these issues, and I play some MMOs that regularly dip into the 20s in crowded cities, no sign of any of this.
So yes, as I've shown, there are still many issues with FreeSync that need to be addressed that show it is clearly not as good as G-Sync. But like I said, this is a good introduction to the tech that Nvidia invented some 18 months ago, maybe with another 18 months AMD will make more refinements and close the gap?
lordken - Thursday, March 19, 2015 - link
5) what? Where did you got that Adaptive sync is tied to AMD HW? Thats pretty bullshit, if it would then it wouldnt be standardized by VESA right?If today it is only AMD HW that can support it (cause they implement first) doesnt validate your claim that it is AMD tied. Intel/nvidia/... can implement it in their products if they want.
It is like you would be saying that if for example LG release first monitor that will support DP1.3 that it implies DP1.3 is LG tied lol
On other hand Gsync is Nvidia tied. But you know this right?
chizow - Thursday, March 19, 2015 - link
@lordken, who else supports FreeSync? No one but AMD. Those monitor makers can ONLY expect to get business from a minor share of the graphics market given that is going to be the primary factor in paying the premium for one over a non-FreeSync monitor. This is a fact.anubis44 - Tuesday, March 24, 2015 - link
VESA supports FreeSync, which means Intel will probably support it, too. Intel graphics drive far more computers than AMD or nVidia, which means that if Intel does support it, nVidia is euchred, and even if Intel doesn't support it, many more gamers will choose free over paying an extra $150-$200 for a gaming setup. Between the 390-series coming out shortly and the almost guaranteed certainty that some hacked nVidia drivers will show up on the web to support FreeSync, G-Sync is a doomed technology. Period.chizow - Tuesday, March 24, 2015 - link
Intel has no reason to support FreeSync, and they have shown no interest either. Hell they showed more interest in Mantle but as we all know, AMD denied them (so much for being the open hands across the globe company).But yes I'm hoping Nvidia does support Adaptive Sync as their low-end solution and keeps G-Sync as their premium solution. As we have seen, FreeSync just isn't good enough but at the very least it means people will have even less reason to buy AMD if Nvidia supports both lower-end Adaptive Sync and premium G-Sync monitors.