DaRkL3AD3R
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Hey all, I have a weird concern about my GTX 780. It all stemmed from some odd behavior in Arma 3, where my VRAM usage hits around 2.6GB then all of a sudden the game flushes all my GPU memory and has to reload all the textures. This causes a noticeable stutter for about 2-3 seconds while it rebuilds the VRAM cache. I see it on my Rivatuner OSD drop from ~2.6GB down to like 700MB then quickly stabilize again at around 1.2GB. This lead me to check my 780's available total VRAM when I found this...  DXDiag is only showing 2696MB of VRAM total on my GTX 780. All of my older GPU's actually showed HIGHER GPU VRAM total than what the card is sold as. What's the story with this? Is this how all GTX 780's are or is one of my memory chips dead on my card/missing? I'm running Windows 7 x64 Ultimate so I know it's not a memory addressing limitation. Anyone else finding their GTX 780 shows the same?
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Fumigator
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Re:GTX 780 - VRAM question
2013/06/16 16:08:15
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hmm... I'm showing 2727MB. 7 64-bit ultimate as well.
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ILikeBeans
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Re:GTX 780 - VRAM question
2013/06/16 16:23:49
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Yikes, I hope peeps start responding to this and post there vram amount 
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delta7
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Re:GTX 780 - VRAM question
2013/06/16 16:24:03
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The 780 ACX SC we have is showing 4095 in dxdiag with windows 7 64 bit Home premium. Arma3 vram is running well over 2gb on our machine also.
post edited by delta7 - 2013/06/16 16:32:44
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Rei86
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Re:GTX 780 - VRAM question
2013/06/16 16:42:16
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hmm odd, will post up when I get home.
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Fumigator
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Re:GTX 780 - VRAM question
2013/06/16 16:50:25
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Latest gpu-z release (0.7.1) shows 3072MB.
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DaRkL3AD3R
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Re:GTX 780 - VRAM question
2013/06/16 16:54:13
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delta7
The 780 ACX SC we have is showing 4095 in dxdiag with windows 7 64 bit Home premium.
Arma3 vram is running well over 2gb on our machine also.
This is in line with what I've always experienced with all other GPU's. DXDiag actually shows more than the card is advertised as having. This is the first time it's shown UNDER specifications. And combined with my startling Arma 3 GPU VRAM issue... I'm a bit worried that my card is indeed missing memory.
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ILikeBeans
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Re:GTX 780 - VRAM question
2013/06/16 17:44:58
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Yah I think dxdiag is way off from reality. I just check it and it's like twice what I have. I use Everest Ultimate for my diagnostic and it is showing the correct amount. I have 670's though
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6dracing
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Re:GTX 780 - VRAM question
2013/06/16 18:05:34
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I have a gts 250 with 512 ram. It shows I have approx 4071. I wouldn't take too much from dxdiag.
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_Nite_
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Re:GTX 780 - VRAM question
2013/06/16 18:25:57
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Yea windows shows I have 4095 Total VRAM, but its 2.56GB Dedicated and 1.53GB Shared 
post edited by _Nite_ - 2013/06/16 18:28:42
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Husky_
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Re:GTX 780 - VRAM question
2013/06/16 19:04:56
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Here is what I got: 
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Rei86
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Re:GTX 780 - VRAM question
2013/06/16 20:02:52
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meh, GPU-Z is reporting my cards just fine.
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HeavyHemi
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Re:GTX 780 - VRAM question
2013/06/16 20:43:49
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_Nite_
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Re:GTX 780 - VRAM question
2013/06/16 21:12:49
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Fumigator
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Re:GTX 780 - VRAM question
2013/06/16 21:13:13
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schulmaster
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Re:GTX 780 - VRAM question
2013/06/16 21:20:34
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In several of the above configurations, it seems that SLI memory is not detected as shared between adapters. My 690 is reported as having around 4000MB available, and HeavyHemi, up there with his manly config, has two TITANS which about equal his reported value. It seems any VRAM, as well as allotted shared memory are all designated as available.
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DaRkL3AD3R
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Re:GTX 780 - VRAM question
2013/06/16 21:50:32
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Is there some kind of way I can test my GPU VRAM like MemTest86 did? I just want to make sure all my VRAM is working just fine and that the issues with Arma 3 capping out at 2.6GB before resetting are just an Arma 3 problem.
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_Nite_
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Re:GTX 780 - VRAM question
2013/06/16 22:00:13
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Bobmitch
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Re:GTX 780 - VRAM question
2013/06/16 22:31:08
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DaRkL3AD3R
Hey all,
I have a weird concern about my GTX 780. It all stemmed from some odd behavior in Arma 3, where my VRAM usage hits around 2.6GB then all of a sudden the game flushes all my GPU memory and has to reload all the textures. This causes a noticeable stutter for about 2-3 seconds while it rebuilds the VRAM cache. I see it on my Rivatuner OSD drop from ~2.6GB down to like 700MB then quickly stabilize again at around 1.2GB.
This lead me to check my 780's available total VRAM when I found this...
DXDiag is only showing 2696MB of VRAM total on my GTX 780. All of my older GPU's actually showed HIGHER GPU VRAM total than what the card is sold as.
What's the story with this? Is this how all GTX 780's are or is one of my memory chips dead on my card/missing? I'm running Windows 7 x64 Ultimate so I know it's not a memory addressing limitation.
Anyone else finding their GTX 780 shows the same?
Look at mine...Windows 8... Hmmm
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dave0413
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Re:GTX 780 - VRAM question
2013/06/16 23:50:03
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DaRkL3AD3R
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Re:GTX 780 - VRAM question
2013/06/18 11:42:15
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_Nite_
DaRkL3AD3R
Is there some kind of way I can test my GPU VRAM like MemTest86 did? I just want to make sure all my VRAM is working just fine and that the issues with Arma 3 capping out at 2.6GB before resetting are just an Arma 3 problem.
http://www.ocbase.com/
http://www.majorgeeks.com...emory_stress_test.html
http://www.techpowerup.co...-technology-preview-1/
thats the 3 I found using google, I never used any of them though
Thanks for the links. Unfortunately none of them really seem to work right anymore or don't do what I'm looking for at all. Ah well seems DXDiag is pretty useless. Makes you wonder why so many tech support people ask for DXDiag dumps 
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AStaley
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Re:GTX 780 - VRAM question
2013/06/18 12:36:39
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It's nothing to worry about, it's a known bug with DXDiag. http://support.microsoft.com/kb/2026022 I guess they never got around to fixing it with Win7. Either way it won't affect games in any shape or form. Use GPU-z or HWInfo64 to get the correct values. Just for the record Win8 reports my total GFX memory as 10Gb, 3Gb dedicated and 7Gb shared.
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KEVRAY
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Re:GTX 780 - VRAM question
2013/06/18 14:25:07
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You could take a look in the nvidia control panel bottom left for system info. 
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