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970's having performance issues using 4GB Vram - Nvidia investigating

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africanos23 said:
You limited FPS to 30 and that small scene doesn't fill the VRAM the same as in-game.
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The limit FPS has no effect, maybe it does with vSync on but 74FPS @ 1440p would prove otherwise.

as for scene memory utilization, I am 45% through the story and have never had a hitch in game play, well nothing that would cause me concern, and believe me I am a performance freak (XtremeSystems no1 once).

I think you are just busting a nut to find issues where, there may be, but I personally have none.
 
dyonisis007 said:
The limit FPS has no effect, maybe it does with vSync on but 74FPS @ 1440p would prove otherwise.

as for scene memory utilization, I am 45% through the story and have never had a hitch in game play, well nothing that would cause me concern, and believe me I am a performance freak (XtremeSystems no1 once).

I think you are just busting a nut to find issues where, there may be, but I personally have none.
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It's just to be certain that we are stressing the VRAM. Let me test it out in a little I'm heading home.

Will update with my findings tomorrow morning.
 
africanos23 said:
You limited FPS to 30 and that small scene doesn't fill the VRAM the same as in-game.
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https://www.youtube.com/watch?v=q8yooNQ1uYk

I don't have FC4 to test but I do have DAI. If I completely max the settings @ 4K it stutters terribly but VRAM goes to 4GB in Afterburner. If I turn off MSAA or knock down textures to Ultra from Fade Touched then it goes to about 3800MB VRAM and the stuttering is gone.

I haven't got far in the game as it has glaring SLI issues and running it at above settings on one card would probably be like 20fps :p
 
james.miller said:
sigh.

The option was, 3.5gb or 3.5gb + 0.5gb of slower access ram. They choose the latter. So tell me, how is that being a cheapskate at the expense of the customer?



You disagree because you clearly dont understand it.
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but they didnt market the card as having 3.5gb + 0.5gb of slower access ram, thats why some think ,rightly or wrongly they have been misled.:)
 
Ian Evey said:
I watched it and saw it ran fine? How much vram was it using? I could not see that bit.
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3540 reported by Afterburner OSD. As I have said above, this is with SLI Inno3D 970's @ 1440p, ultra everything where available and no hitches in real world game-play, I can assure you I would be mightily frustrated if it did have when I have only had the two cards a couple of months.
 
lordfletch said:
but they didnt market the card as having 3.5gb + 0.5gb of slower access ram, thats why some think ,rightly or wrongly they have been misled.:)
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Well, whether people think they have been misled or not wasnt the point. He claimed Nvidia took the cheap way out - either by cutting part of the core (standard practice, both nvidia and AMD have done it since forever) or by using 4gb of ram instead of 3.5, which is only going to be more expensive for nvidia. Then he criticized me for sticking up for it.

so, either way, he's clueless.
 
stooeh said:
https://www.youtube.com/watch?v=q8yooNQ1uYk

I don't have FC4 to test but I do have DAI. If I completely max the settings @ 4K it stutters terribly but VRAM goes to 4GB in Afterburner. If I turn off MSAA or knock down textures to Ultra from Fade Touched then it goes to about 3800MB VRAM and the stuttering is gone.

I haven't got far in the game as it has glaring SLI issues and running it at above settings on one card would probably be like 20fps :p
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Are you deliberately only using one card in that video? Its cool either way, great performance(How do you get YouTube to show the 1440p option? lol)
 
Yeah was recorded via shadowplay and I think with SLI + shadowplay the framerate would not be much higher. I also wanted to rule out any SLI related stutter.

As for 1440p I just uploaded the 4K shadowplay recording and one by one the higher resolutions appeared :p
 
Nvidia Geforce GTX 970 Specs Updated: Only 56 ROPs and Less than 2MB L2 Cache

Nvidia has finally given a very detailed and technical explanation to PCPer on why the GTX 970 faces memory allocation issues. The reason lies in the fact that the GTX 970 technically has fewer ROPs than the GTX 980 as well as less than the full 2MB cache of its older brother. Basically, the GTX 970 only has 56 ROPs and about 1.7MB of L2 cache available to it. It can still hit the theoretical peak bandwidth of 224 GB/s but that is only while using both blocks of memory.

Read more: http://wccftech.com/nvidia-geforce-gtx-970-memory-allocation-issue-returns-56-rops-64/#ixzz3PyKExbxd
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From Anand:

Now make no mistake, NVIDIA right now is in full damage control mode due to the negative press this issue has garnered and the pain that’s going to follow. When NVIDIA is getting Senior VPs like Jonah Alben on the phone with us on a weekend night to talk architecture and answer questions, this isn’t normal operating procedure for the company. But at the same time it’s a positive sign for how serious NVIDIA is taking our concerns, and meanwhile an NVIDIA under pressure is an NVIDIA that is more likely to answer our deepest technical questions, giving us more insight than ever before into GM204
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More here: http://www.anandtech.com/show/8935/g...ory-allocation
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wAjbjzK.png


GM204_arch_0.jpg
 
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stooeh said:
Yeah was recorded via shadowplay and I think with SLI + shadowplay the framerate would not be much higher. I also wanted to rule out any SLI related stutter.

As for 1440p I just uploaded the 4K shadowplay recording and one by one the higher resolutions appeared :p
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Hmm, I record with ShadowPlay at source res(1440p), then just push that up to YouTube, but it just gives me 1080p60. Ill force ShadowPlay into 1440p and see if that helps. Thank for your reply, and sorry to others, this not relevant to the ongoing 'DRAMA' CHOO CHOO!!

Tonester0011 said:
Render your video 1440... :p
Can do 4k as well now.
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Really? didnt know that /sarcasm ;)

Sarcasm aside, I have uploaded in 1440p many times, just seems to not be the case at the moment. In fact my company bought me Adobe Premiere with the explicit purpose of being able to edit and render at 1440p+, which I do for work. Though for this purpose I just used the raw footage from ShadowPlay recorded at 1440p
 
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More here: http://www.anandtech.com/show/8935/geforce-gtx-970-correcting-the-specs-exploring-memory-allocation

And before anyone jumps in with the 'already a thread for this' take a look in there and see of you'd fancy navigating it for some actual information :p

The short version, less rops, less L2, less crossbar resources resulted in a change of how the memory is managed, nvidia are blaming marketing, how it never got caught before release is anyone's guess, just seems quite sloppy in truth.

I smell some freebies heading 970 owners way.
 
Apart from the first statement, have Nvidia said anything more? I dont want to read through 30 pages of bickering to see if anything has actually happened in the past 36 hours or so
 
pgi947 said:
before anyone jumps in with the 'already a thread for this' take a look in there and see of you'd fancy navigating it for some actual information :p
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+ 1 haha, yeah this would have got lost in another thread.

pgi947 said:
More here: http://www.anandtech.com/show/8935/g...ory-allocation


The short version, less rops, less L2, less crossbar resources resulted in a change of how the memory is managed, nvidia are blaming marketing, how it never got caught before release is anyone's guess, just seems quite sloppy in truth.

I smell some freebies heading 970 owners way.
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Added your link to OP (:

Although this is quite a big sort of thing not to have been revealed at launch, the fact that the 970 performs so close to the 980 and is relatively cheap I don't believe 970 owners will feel cheated or anything.

If anything it makes the 970 more impressive :-D all that performance with lower spec than we thought.
 
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Reaper 392 said:
Apart from the first statement, have Nvidia said anything more? I dont want to read through 30 pages of bickering to see if anything has actually happened in the past 36 hours or so
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Basically, any love or performance you had for your 970 is now broken. It will no longer play your games the way you wish them to be played and you must demand blood a refund or smash it on the ground! /s
 
dyonisis007 said:
Basically, any love or performance you had for your 970 is now broken. It will no longer play your games the way you wish them to be played and you must demand blood a refund or smash it on the ground! /s
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Not strictly true, it'll play your games on a 720p tv just fine but you may need ear plugs for the coil whine if pushing more than 30 fps......
 
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