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GTX 780 with >3GB RAM? Also debating 2x 780GTX@1440p vs. 1x 780GTX@1080p/120hz/Lightboost

post #1 of 5
Thread Starter 
Curious if anyone has heard confirmation other 780 GTX's will be made with more than 3GB RAM? Some articles back from March say "5GB" but other things I've read said it will be either 3 or 6 GB, due to how the 6 memory controllers work. Sounds like we will probably find out this week when that convention starts tomorrow but I can't help but ask here. Maybe 4.5gb if there's 6 memory controllers x 768mb each?

Also curios if SLI on the 600/700 series limit you to 2 displays still? I see the 780GTX says it can support up to 4 displays all at once, but not sure if it goes into SLI mode if that gets reduced at all, doesn't sound like it but just wanted to double check.

My current setup is a 30" @ 2560x1600, 2x 560 TI's, and my TV as the second monitor since SLI on the 560's limits me to 2 displays. I've pretty much settled on the EVGA ACX superclocked 780 GTX, just a question now of if waiting a few weeks for a higher RAM version is a possibility or a waste of time... But besides that I'm also debating between either:

1) 2 x 780's for fast enough FPS in next-gen games like Crysis 3 etc at 2560x1600,
2) or maybe 1 780 GTX, and 1 of those Asus 27" Lightboost-enabled monitors, that are only 1920x1080 but can do that neat zero blur thing.

Having never tried 120hz before and now after reading about the LightBoost blur trick I really want to try #2, and just use my 30" as my secondary monitor for browsing and other non-gaming activities. Figuring if I play full screen games on just the 1920x1080 where a single 780 should be plenty of FPS -- except if I need to get 120FPS for the LightBoost "less blur than a LCD" trick to work, and even 2x 780's don't seem to bump Crysis 3 over 120FPS for example at max settings anyway, ugh.

Is there any way to tell (in Windows 8) how much video ram my current 2x 560's are using when I launch several games at once? I'm concerned about VRAM usage due to my usage scenario. I also play a poorly optimize MMO (that gets like 12 FPS at 2560x1600 on my 2x560Ti's with settings turned all the way down, ugh)... Sometimes I run several accounts at once at much lower resolution, but I'm wondering if the 2 or 3 instances of the game running at once would push me over the 3GB limit. I also watch movies on a third display (TV 1920x1080) quite a bit while gaming at the same time but I can't imagine that using up that much video RAM.
post #2 of 5
the older versions of precision x tell you how much VRAM is being used
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post #3 of 5
Has been mentioned in other 780 Threads but there are no 6 GB GTX 780's in the works. The primary reason is it will eat the sales of the GTX Titan and nVidia for obvious reasons will not let that happen.

Also due to the architecture of the 384-bit BUS on the VRAM, VRAM configurations can only be 768MB, 1.5GB, 3 GB or 6 GB like factors. So a 5 GB or a 4 GB option is not possible for the 780.
    
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post #4 of 5
Quote:
Originally Posted by Sadus View Post

Curious if anyone has heard confirmation other 780 GTX's will be made with more than 3GB RAM? Some articles back from March say "5GB" but other things I've read said it will be either 3 or 6 GB, due to how the 6 memory controllers work. Sounds like we will probably find out this week when that convention starts tomorrow but I can't help but ask here. Maybe 4.5gb if there's 6 memory controllers x 768mb each?

My current setup is a 30" @ 2560x1600, 2x 560 TI's, and my TV as the second monitor since SLI on the 560's limits me to 2 displays. I've pretty much settled on the EVGA ACX superclocked 780 GTX, just a question now of if waiting a few weeks for a higher RAM version is a possibility or a waste of time... But besides that I'm also debating between either:

1) 2 x 780's for fast enough FPS in next-gen games like Crysis 3 etc at 2560x1600,
2) ormaybe 1 780 GTX, and 1 of those Asus 27" Lightboost-enabled monitors, that are only 1920x1080 but can do that neat zero blur thing.

Having never tried 120hz before and now after reading about the LightBoost blur trick I really want to try #2, and just use my 30" as my secondary monitor for browsing and other non-gaming activities. Figuring if I play full screen games on just the 1920x1080 where a single 780 should be plenty of FPS -- except if I need to get 120FPS for the LightBoost "less blur than a LCD" trick to work, and even 2x 780's don't seem to bump Crysis 3 over 120FPS for example at max settings anyway, ugh.

Is there any way to tell (in Windows 8) how much video ram my current 2x 560's are using when I launch several games at once? I'm concerned about VRAM usage due to my usage scenario. I also play a poorly optimize MMO (that gets like 12 FPS at 2560x1600 on my 2x560Ti's with settings turned all the way down, ugh)... Sometimes I run several accounts at once at much lower resolution, but I'm wondering if the 2 or 3 instances of the game running at once would push me over the 3GB limit. I also watch movies on a third display (TV 1920x1080) quite a bit while gaming at the same time but I can't imagine that using up that much video RAM.

These old articles were likely thinking that what the gtx 780 was going to have to cut costs. Likely they won't give the gtx 780 a memory upgrade as that would put it closer to a Titan. However, if they do I'd imagine it would cost a premium. For a 2560x1600 3gb is good. My GTX 670 ftw 2gb ran my u2713hm (2560x1440) rather well without running out of memory.

A single GTX 780 runs alot of games on ultra with little trouble at your resolution. But, if you want to sli the stock cooler would be a better choice. The twin fan coolers like the EVGA ACX pushes the hot air back into your computer case. This would raise your cards temps. But, if you go with one then the EVGA ACX is the better choice. thumb.gif
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post #5 of 5
Thread Starter 
Thanks for all the info everyone! Was still having a hard time finding out about the memory, too many new threads about these new beasts...
Quote:
Originally Posted by AIienware View Post

the older versions of precision x tell you how much VRAM is being used

Oh nice, even in the current version I found it - you have to click Monitoring and in 'Active hardware monitoring graphs' UNCHECK everything but GPU1(/2/etc) Memory Usage. Otherwise it only has room to show a couple graphs down there and all the other checked-by-default ones take up all the room. Maybe there's some way to scroll through all the selected graphs without having to uncheck all the others, but my 2 seconds of clicking around didn't find it yet.
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