PCPer on Crossfire problems in the Titan review

[BrightCandle]

At the end of the pcperspective review on Titan they have a quick update on how it is that they are testing frame rates and output. They specifically excluded crossfire after what they have seen and their is a peak at what their process is going to show us:

http://www.pcper.com/reviews/Graphi...ance-Review-and-Frame-Rating-Update/Frame-Rat

When they adjust for the useless frames the stutter is ridiculous.They also show that NVidia's SLI outperforms the frame time graphs due to frame metering and that AMDs real output is dramatically worse than its frame times. All those holding out for this process to get ready for prime time were right to wait, these results show just how bad AMDs crossfire really is. Having used it I knew it was bad but I wouldn't have predicted it was effectively worthless.

Wow what a little thing to sneak into the back of the titan review.

 

[Imouto]

Now TechReport is somehow not to be trusted? They're reporting the opposite with their 7970 CF setup. Better frame latencies for the 7970 CF in most games.

FFS, even you were reporting your own FRAPS figures giving them some credit. Everyone at this forum gave credit to those reviews and FRAPS testing.

The thing is that they're trying to estimate the user experience when no one would use game options that would make their screen tear. Seriously misleading if not totally biased or just plain utter incompetence.

I'd like to see figures using RadeonPro, seriously.

 

[sontin]

There is a difference between frame distribution and the time the frame needs to get rendered.

Look at Sleeping Dogs: http://techreport.com/review/24381/nvidia-geforce-gtx-titan-reviewed/9

Or farcry 3: http://techreport.com/review/24381/nvidia-geforce-gtx-titan-reviewed/12

The 7970CF is much faster than the 7970 but the frame distribution is much more worse.

 

[Imouto]

Worse as in like you'd be able to see it?

I like how GTX 680 latencies are supposed to be better than a 7970 CF while averaging less than 30 fps in Far Cry 3. 30 fps that are a total game breaker for most ppl.

But lets quote TR here:

When I asked AMD about the CrossFire problems, they told me they were investigating multiple angles. When I asked Nvidia about this game, they said they believe there may be some problems with the application itself. So... yeah. In my experience, you can get Far Cry 3 to run fairly smoothly on these video cards, but you'll have to back way down on the image quality settings.

But lets crank the hell up in options to make it unplayable. Flawless logic.

Useless charts are useless.

 

[p_monks33]

I don't know about graphs and true numbers, I can honestly say other than metro 2033 and dirt showdown my gtx 660 SLI feels smoother than my CFX 7970 system did. Its amazing how micrrostutter even at high fps made games feel like 25 FPS. I believe the 7970 is the best price to performance card no doubt , just poorly optimized.

 

[Rikard]

I think almost nobody is saying that Crossfire is as smooth as SLI, so that is not new information.

It is more interesting that even when using their new method the single 7970 is smoother than the single 680. And in the much discussed Skyrim at 2560x1440 using Fraps the AMD card is giving smoother results than the NV card. Is this the effect of the driver update we are seeing?

 

[Yuriman]

I recently moved up from HD4870 Crossfire and my perception was that it was considerably more smooth with CF enabled than without. I dunno if this problem is specific to GCN now but those particular 2 cards (to me) do not "feel" even slower than one - they "felt" about what the actual framerate number suggested they should.

 

[Attic]

I know everybody has their inferential angles for how to address MS, but having used both SLI and X-fire I thought the issue was simple. Namely that you need Vsync on and locked frames to 60 to not notice it.

Some games of course worse than others, but non locked 60FPS w/ Vsync enabled on either SLI or x-fire felt like <30fps on single card to me.

Only dual gpu I'd consider now would be 2x680 or 7970ghz edition. Still 60fps mins with max setting is nearly impossible, so for those sensitive to display fractures (low fps, tearing, MS) single GPU only thing I'd recommend.

Titan looks great, albeit at 600. At 1000 it looks stupid.

 

[tynopik]

more info:
http://www.pcper.com/reviews/Graphi...art-3-First-Results-New-GPU-Performance-Tools

 

[sontin]

Crossfire is really a miracle of nature:

http://www.sweclockers.com/recension/16541-nvidia-geforce-gtx-titan/8#pagehead

 

[hyrule4927]

Crossfire is really a miracle of nature:

Yep, sure can't compare to these beautiful SLI results. :whiste:

 

[sontin]

I don't care about ether.

It shows that AFR is not competitive to a single GPU card.

 

[hyrule4927]

Oh, so suddenly this is all about multi-GPU vs. single GPU? Because one post ago this was just about was bashing Crossfire. Funny how that goes.

 

[BallaTheFeared]

Oh, so suddenly this is all about multi-GPU vs. single GPU? Because one post ago this was just about was bashing Crossfire. Funny how that goes.

I enjoyed the part where AMD fans ignored the part where buying another card gave them no tangible increase in actual frame output and increased stutter.

 

[hyrule4927]

I enjoyed the part where AMD fans ignored the part where buying another card gave them no tangible increase in actual frame output and increased stutter.

I enjoyed the part where the exact same thing happened to everyone who bought a 690.

 

[BallaTheFeared]

I enjoyed the part where the exact same thing happened to everyone who bought a 690.

/facepalm

We're not talking about squiggly lines on a graph, we're talking about CF not actually outputting the frames it's reportedly creating...

 

[chimaxi83]

I enjoyed the part where AMD fans ignored the part where buying another card gave them no tangible increase in actual frame output and increased stutter.

Your obsession with AMD is disturbing. You sling crap in almost every post of yours. True to form, I guess, returning to your former, frequently banned self.

Anyway, my CF 7970 gives me a very enjoyable game experience. I guess I'm blind, right? I had one, upgraded to 2560x1440, so I bought another. It's nice to be able to buy your own things, whenever you want, simply because you feel like it. :whiste:

 

[hyrule4927]

/facepalm

We're not talking about squiggly lines on a graph, we're talking about CF not actually outputting the frames it's reportedly creating...

/facepalm

The squiggly lines are massive variance between frame times, resulting in stutter. Stutter is stutter, no matter how you want to describe it.

 

[VulgarDisplay]

/facepalm

We're not talking about squiggly lines on a graph, we're talking about CF not actually outputting the frames it's reportedly creating...

Let's be honest here, if you're talking about crossfire rendering runt frames and not reporting framerates correctly you have to acknowledge that SLi does the exact same thing, and the only way to mitigate the problem for both brands is to use Vsync.

 

[BallaTheFeared]

Your obsession with AMD is disturbing. You sling crap in almost every post of yours. True to form, I guess, returning to your former, frequently banned self.

Anyway, my CF 7970 gives me a very enjoyable game experience. I guess I'm blind, right? I had one, upgraded to 2560x1440, so I bought another. It's nice to be able to buy your own things, whenever you want, simply because you feel like it. :whiste:

Coming from you I laughed so hard. Almost like pot to kettle, only in this case pot is grasping to create a kettle.

I'm guessing you wouldn't say anything bad about AMD no matter what you experienced since your post history demonstrates just that.

Let's be honest here, if you're talking about crossfire rendering runt frames and not reporting framerates correctly you have to acknowledge that SLi does the exact same thing, and the only way to mitigate the problem for both brands is to use Vsync.

There is a reason they continued to test SLI while not testing CF, it's because what you said was wrong.

 

[chimaxi83]

Coming from you I laughed so hard. Almost like pot to kettle, only in this case pot is grasping to create a kettle.

I'm guessing you wouldn't say anything bad about AMD no matter what you experienced since your post history demonstrates just that.

I buy and currently own cards from both companies. Reference the rest of my post history, where the "worst" I've said about Nvidia in recent memory is that Titan is overpriced.

I don't ever refute performance from either company, nor am I refuting these new issues that are being found, because I don't have the same agenda as you. Actually, I have no agenda. I'm not some biased Nvidiot who latches onto recent reports and exposés about whatever is wrong with AMDs performance, when literally the day before you read about it online, you knew nothing about the phenomena, and probably didn't even know the terms they're using to refer to what's happening. It's cute, bandwagoner(s) (you all know who you are) :thumbsup:

 

[BallaTheFeared]

I buy and currently own cards from both companies. Reference the rest of my post history, where the "worst" I've said about Nvidia in recent memory is that Titan is overpriced.

I don't ever refute performance from either company, nor am I refuting these new issues that are being found, because I don't have the same agenda as you. Actually, I have no agenda. I'm not some biased Nvidiot who latches onto recent reports and exposés about whatever is wrong with AMDs performance, when literally the day before you read about it online, you knew nothing about the phenomena, and probably didn't even know the terms they're using to refer to what's happening. It's cute, bandwagoner(s) (you all know who you are) :thumbsup:

And the worst I've said about AMD was what it is, I don't need to make anything up I only discuss what is currently happening in the industry. I try to leave personal feelings out of a "TECH" web site, as they really have no purpose on a technology forum.

No your agenda is much different, instead of discussing technology you are here for the sole purpose of drama. Either to create it or partake in it. That's that whole issue where you use feelings to discuss matters of technology.

No I didn't know the exact reason why CF was second rate to SLI, but I knew it was from my own testing and my own experiences and the vast wealth of information on the net that points in the same direction. Had any of us known CF was actually cheating it's way to high scaling before this came out we would have been talking about it. The fact that you're on a tech forum and have no desire to actually discuss technology but solely engage in back and forth banter of trolling and drama speaks volumes for your character.

 

[sensiballfeel]

And the worst I've said about AMD was what it is, I don't need to make anything up I only discuss what is currently happening in the industry. I try to leave personal feelings out of a "TECH" web site, as they really have no purpose on a technology forum.

No your agenda is much different, instead of discussing technology you are here for the sole purpose of drama. Either to create it or partake in it. That's that whole issue where you use feelings to discuss matters of technology.

No I didn't know the exact reason why CF was second rate to SLI, but I knew it was from my own testing and my own experiences and the vast wealth of information on the net that points in the same direction. Had any of us known CF was actually cheating it's way to high scaling before this came out we would have been talking about it. The fact that you're on a tech forum and have no desire to actually discuss technology but solely engage in back and forth banter of trolling and drama speaks volumes for your character.

this guy.... sounds like he is love to be nvidias waterboy :awe:





Knock it off. If you don't having anything to add to the discussion, stay out of the thread


esquared
Anandtech Forum Director

 

[BallaTheFeared]

Not that I need to explain myself to some new register, but I'll probably get a 7950 in a few months since Nvidia is holding the best chip on the market hostage at $1k.

 

[Imouto]

So these reviewers are actually trying to measure the user experience while tearing their screens like there's no tomorrow.

Performance is there, tested hardware is that powerful but no one in his right mind would use those options to play because of the tearing.

They should try using options that make a little sense for actual gaming instead of throwing useless figures around.

And some 3rd party software testing that aid with these issues would be welcome. At least they would look like trying to fix something instead of riding the tide getting some clicks.