[What price tag am I looking at for supreme graphics?]

 

I have an AMD because it's cheaper and has the exact same performance of an i5.

 

That's not exactly correct, depends on what you're doing with the CPU.

They will perform around the same in multi-threaded games like Battlefield but if we're talking about games like Skyrim, Intel has the upper hand here.

Older games need more performance per core and that is something AMD is lacking and overclocking it won't change much.

Currenly we don't seriously need eight physical cores for gaming but this will change in the future, like in 2 years maybe. Only then, buying an 8 core CPU might be useful, even in gaming. BF4 was a good step towards that future.

[What price tag am I looking at for supreme graphics?]

You are correct that Titan has more Bus Width than 770, however, I didn't compare 770 with Titan. It was 780 vs Titan.

And I did it so you guys can understand what I meant from "more Video Memory doesn't necessarily mean more Bandwidth or Memory Width is needed".

 

The Memory Width is RELEVANT, but it is not the only variable we're looking at. Memory Type, Memory Width and Memory Clock, these are all important when determining the Memory Bandwidth.

 

Lets assume that we have 2 different cards:

Card A: 128-Bit, 1800MHz, GDDR5

Card B: 384-Bit, 1200MHz, GDDR3

 

Card A Bandwidth: 128 / 8 x 1800 x 4 = 115,2 GB/sec

Card B Bandwidth: 384 / 8 x 1200 x 2 = 115,2 GB/sec

 

As you can see from these calculations both cards have the same amount of Memory Bandwidth. But they are quite different from each other.

To answer your question, there can't be a 6GB GTX 650. Because there is no demand for it and it wouldn't be ideal to have a 256-Bit GTX 650 with 8000MHZ Memory Clock. But technically, it can be done.

 

I have self experience, because I am using one already. I wouldn't actually need to use the card to know this because these are all based on facts and calculations.

 

Short answer, you're not wrong that Memory Width is important and it's probably the easiest way to gain more Memory Bandwidth. But it is not the only thing we're looking at and it is definitely not the only factor that determines the final Memory Bandwidth. Like I said earlier, even you can improve your GPU's Memory Bandwidth at home, just by overclocking it. I overclocked mine from 1753 to 2000, and I almost have 260GB/sec bandwidth compared to default 225GB/sec. Which is really close to Titan.

[What price tag am I looking at for supreme graphics?]

Sorry to say, but the 4GB version is totally wasted money compared to the 2GB version. The 2GB are just a marketing gag. The card will not be able to make use of the extra VRAM due to it's low bus width. Take a look:

http://www.pugetsystems.com/labs/articles/Video-Card-Performance-2GB-vs-4GB-Memory-154/

http://alienbabeltech.com/main/gtx-770-4gb-vs-2gb-tested/3/

 

Try to give it back!

 

No it will not. Before the card could use the 2gb extra it will surrender because it has not enough "horsepower" to use these 2gb. The 770 was designed for only 2gb and so it's memory bus width is limited to 256bit and that's not enough.

 

Last time: the memory bandwith of the GTX 770 is too low to fill up 4GB VRAM. Do a little research.

 

Sorry to say, but your information is totally wrong.

 

This is like saying Titan will never use 6GB of VRAM because it's memory bandwidth is low and not designed to utilize all of 6GB VRAM. Sorry to say, but it actually does use all of it, if needed. And I'm sure you're gonna be surprised when I tell you that GTX 780 and Titan has the same amount of Memory Bandwidth and Bus Width. One has 3GB VRAM and the other 6GB VRAM.

 

As you can see from this example, more Video Memory doesn't necessarily mean more Bandwidth or Memory Width is needed. GTX680(or GTX 770 in this matter) can keep up with 4GB VRAM easily.

 

And if you really have some knowledge about GPUs and how they work(considering that you're saying other people to do a little research), you should know by now that the Memory Bandwidth is actually calculated by Memory Type, Memory Clock and the Memory Width and not solely dependent on the Memory Width.

 

(6GB) GTX Titan Bandwidth: 384 / 8 x 1502 x 4 = 288,4 GB/sec

(4GB) GTX 770 Bandwidth: 256 / 8 x 1753 x 4 = 224,4 GB/sec

 

Seems enough to me. If you're not really satisfied with it you can always overclock your Memory Clock to higher values(ASUS version runs really cool, it's really safe to OC that one but I don't know about the others), and get more Memory Bandwidth that way.