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WHat happened to the 780 have 5g?

post #1 of 6
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Hi I was looking for when i higher gig 780 was coming out, and read 1 thing after another that said that 780 would have 5 g the 770 would have 4 etc etc. But the 780 has 3g and the 770 has 2g. What happened? Also I wanted to find out when is the higher gig 780 coming out? I am now without any Vcards and going to be ordering soon, and would hate to order then 3 days later the higher ram 780 come out.
    
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post #2 of 6
I hear there are no 6gb 780s going to be released. We have Titan for that market.
    
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post #3 of 6
Thread Starter 
I didnt think that there would be a 6g 580, I was think they are going to release a 4g or something, then I seen that even Nvidia release data the said that 780 was going to be 5g, and it was release with 3g. just makes you go wth.

So is there going to be a 4g 780?
    
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post #4 of 6
Quote:
Originally Posted by Darkshadow74 View Post

Hi I was looking for when i higher gig 780 was coming out, and read 1 thing after another that said that 780 would have 5 g the 770 would have 4 etc etc. But the 780 has 3g and the 770 has 2g. What happened? Also I wanted to find out when is the higher gig 780 coming out? I am now without any Vcards and going to be ordering soon, and would hate to order then 3 days later the higher ram 780 come out.

That 5GB number was being tossed around when the rumors were that the 780 would be directly based on the Tesla K20 (not K20X), which has 5GB of VRAM due to having a 320-bit memory bus (1GB per 64-bit memory controller). As it turns out, the 3GB 780 (just like the 6GB Titan before it) is based on the K20X, which has a 384-bit bus.

However, in order to keep the product positioning between the 780 and Titan in order, NVIDIA decided to reduce the 780's VRAM to 3GB (512MB per 64-bit memory controller), reduce the number of SMX clusters from Titan's 14 to 12, and lastly cripple double-precision FP64 computation (which is for mission-critical calculations, and totally useless for gaming) from Titan's 1/3 of single-precison FP32 speeds to 1/24 as fast.

According to reps from EVGA (NVIDIA's top GPU partner in North America), there aren't any near-term plans to make a 6GB version of the 780, as that would likely negatively impact the GTX Titan's position on the product stack.
Quote:
Originally Posted by Darkshadow74 View Post

So is there going to be a 4g 780?

EVGA said they'll be releasing 4GB models of the 770 in a couple weeks. Gigabyte has already released a 4GB model (GV-N770OC-4GD) to market, but it's OOS at Newegg.
Edited by svenge - 6/3/13 at 9:51pm
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post #5 of 6
Indeed i hate how nvida has done this but alass.
Im buying a 780, likely a model with a custom pcb and power phase design for better OC'ability. Means it will likely be a choice between the EVGA 780 ACX classified or Asus DCII.
Then later down the line when i get a 4khd Screen ill get a second for SLI. VRAM shouldnt be an issue so long as i dont use AA which, at that resolution and at ~112 PPI on a ~39" screen, shouldnt be required anyway.

Ill be ordering one very soon, as soon as some benchmarks are released on those specific models.
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post #6 of 6
Simply a bad rumor
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