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The most important feature. Do you know what it is?

post #1 of 32
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I've posted this in like 4 different threads in response to someone elses post, so I figured for those less educated this may be of some help.

What do you think the most important feature of a Video card is? Shader processors? GPU clock speed? You'd be wrong.


Less shader processors = card is less money to make = cheaper card money wise. But if you can optimize your bus, architecture and memory bandwidth to push as much as you can out it's rear end, then you can equal the performace of a higher card for less money, AND less power usuage.
In the video card world, memory bandwidth is everything. This link may give you some idea:

Source

Hope you all spot the trend.... Focus on the cards memory bandwidth.

If you don't get it, I'll give ya an analogy:

A Car with 8 cylinders and a Car with only 6 decide to race. Which do you think would win?

The one with the most horsepower and torque wins. If the 6 cylinder car has some engine mods like a turbochager, and is lighter (power to weight ratio) it's gonna win. Cylinders doesn't mean anything.
Memory bandwidth is exactly that. Horsepower and torque. It's not something the videocard industry likes to talk about because for one, it's a weakness. People focus on 'oh the GPU is clocked at 3Ghz!! I'm gonna buy that FTW!' It's a selling point. Most (and obviously some here) have no clue what memory bandwidth is, or what it's used for... so why bother advertising it? Even my grandma knows how fast her CPU is though...(she really does) THATS what their gonna focus on.
And thats exactly what the industry wants. Which is the stupidest thing someone could do. (without obviously checking the "horsepower" first)

Most of us here, go by benchmarks, which is fine because benchmarks usually can show an accurate use of that bandwidth and the results are inline. So it doesn't matter. But lately I've been seeing people telling others to get certain cards based on 'how many shader processors is has, and how fast they're clocked' with no regard for anything else. I hate seeing someone get ripped off, or a bad deal. So I apologize if this post has a harshness to it. I just want to inform those who weren't familiar with this particular topic.

Thats what we're all here for right? To help each other and the community?
Plus I have a splitting headache from a hangover I incurred at a Verizon Wireless meeting/dinner event where I drank to much wine. (wine always gives me headaches but I couldn't turn it down when everyone including the regional president was drinking her share.
If you have any wicked cures, please see this thread and comment. I could use it
Hangover Cure thread in Offtopic Forum

Hope my info helps at least 1 person. Or me typing this was pointless...

EDIT: I'm mostly referring to Nvidia cards, comparing ATI's GPU to Nvidia's GPU regarding badwidth is a different monster. I guess I should have been more specific but I guess you guys just proved that ATI is completely inferior to nvidia as far as efficiency goes. At least that whats I think your saying.
Apparently I also need to add that I am not speaking of "bus width". I'm talking about memory bandwidth. (for example, the 9600GT pumps out 57GB/s to your monitor)


~R
post #2 of 32
Oh, i always thought it was the memory bandwidth that made the card better lol, but now i know that it is the shader clock which will be the performance boost thanks to this helpful review. rep +
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post #3 of 32
And thats why the 256bit 8800GTS still rapes the 512bit 2900XT and Pro

Memory bandwidth only determines how good a card can be, not how good it actually is. Its all about the architecture, which is why nVidia has been number one for a long time now, and it takes a two core monstosity to dethrone them. I do agree with the shader processor thing, I mean nVidia's 64SP 9600GT is in the same league as ATI's 320SP higher clocked HD 3870.
    
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post #4 of 32
You actually made a thread about this. Trust me you'll be proven horribly wrong here. I'm actually subscribed to this one to watch.

Oh and I like how you added torque into your car equation now. You kind of forgot about that one last time.

And yes, your typing was pointless.

P.S. Some one PLEASE remind the OP that things on paper don't always translate to real world performance. That's why these bandwidth numbers are always calculated to a "theoretical" amount.
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post #5 of 32
So because the 8800gts has more shader clocks it rapes the 2900xt/pro?

What do you mean by can be? I have no knowledge of the architechture of Nvidia or ati so i dont understand.
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post #6 of 32
Quote:
Originally Posted by darcness View Post
You actually made a thread about this. Trust me you'll be proven horribly wrong here. I'm actually subscribed to this one to watch.

Oh and I like how you added torque into your car equation now. You kind of forgot about that one last time.

And yes, your typing was a waste, not only of your time, but of all our time.



Quote:
Originally Posted by NCyde View Post
So because the 8800gts has more shader clocks it rapes the 2900xt/pro?

What do you mean by can be? I have no knowledge of the architechture of Nvidia or ati so i dont understand.
Well the 8800GTS G92 (256bit) has a memory bandwidth of 62.21gb/s, and it outperforms the 2900XT, which is 512bit and has a memory bandwidth of 100-somthing gb/s.
    
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post #7 of 32
Quote:
Originally Posted by NCyde View Post
So because the 8800gts has more shader clocks it rapes the 2900xt/pro?

What do you mean by can be? I have no knowledge of the architechture of Nvidia or ati so i dont understand.
Thats good Cyde. Just go by gaming benchmarks, hands on experience, and first hand knowledge. It's always better than buying based on paper specs. Anyone with any PC knowledge can back me up on this.

Quote:
Originally Posted by nathris View Post
Well the 8800GTS G92 (256bit) has a memory bandwidth of 62.21gb/s, and it outperforms the 2900XT, which is 512bit and has a memory bandwidth of 100-somthing gb/s.
Thank you! Finally some one else realizing that paper specs mean NOTHING when it comes to the real reason we are all here on OCN: performance.
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post #8 of 32
Quote:
Originally Posted by darcness View Post
Thank you! Finally some one else realizing that paper specs mean NOTHING when it comes to the real reason we are all here on OCN: performance.
Finally? I was here before you!
    
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post #9 of 32
Quote:
Originally Posted by nathris View Post
Finally? I was here before you!
Let's just say me and the OP have "history".
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post #10 of 32
I've seen three virtually identical posts of Relic's GPU/Bandwidth/Car/Valves/Cylinders/Streams/Exhausts/Steering Wheel/Alternator analogies.

Please, just stop!
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