Some in-depth computer questions

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WhiteTigerShiro

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Sep 26, 2008
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I've been looking into getting a new video card, but I'm rather new to the current world of GPUs (I remember back when all you needed to know was whether or not it the card was called "Voodoo"). In specific, I have the following questions:

1. First thing I've noticed is that nVidia's cards tend to have slower core clocks, but they also have a "Shader Clock". So does this basically mean that the slower clock is compensated by the Shader Clock doing some of the work-load on its own?

2. Another main thing I've noticed in the difference between the two companies is Stream Processors. I tried to wiki that to see if I could get any answers on what that meant, but I just about crapped myself when I saw the page. What's a quick laymen's term explanation for those, and how big of consideration should I put into one card vs another when the one has more Stream Processors?

3. Final question for now: I've noticed that the memory type for the cards tends to vary. Some are GDDR3, some are GDDR5, and probably other types as well. How important is this to know? Is it the kinda thing where I'll have to double-check my mobo to make sure it'll be compatible, or is something more simple than that?

4. Okay, final final question for now: Is there really much difference between ATI and nVidia, or does it basically just boil down to the same as the difference between (for example) the PS3 and 360 where either one can be better depending on what you're looking for?

Thanks in advance.
 

Cornish

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Mar 19, 2010
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WhiteTigerShiro said:
I've been looking into getting a new video card, but I'm rather new to the current world of GPUs (I remember back when all you needed to know was whether or not it the card was called "Voodoo"). In specific, I have the following questions:

1. First thing I've noticed is that nVidia's cards tend to have slower core clocks, but they also have a "Shader Clock". So does this basically mean that the slower clock is compensated by the Shader Clock doing some of the work-load on its own?

2. Another main thing I've noticed in the difference between the two companies is Stream Processors. I tried to wiki that to see if I could get any answers on what that meant, but I just about crapped myself when I saw the page. What's a quick laymen's term explanation for those, and how big of consideration should I put into one card vs another when the one has more Stream Processors?

3. Final question for now: I've noticed that the memory type for the cards tends to vary. Some are GDDR3, some are GDDR5, and probably other types as well. How important is this to know? Is it the kinda thing where I'll have to double-check my mobo to make sure it'll be compatible, or is something more simple than that?

4. Okay, final final question for now: Is there really much difference between ATI and nVidia, or does it basically just boil down to the same as the difference between (for example) the PS3 and 360 where either one can be better depending on what you're looking for?

Thanks in advance.
1. It sets the clock speed of the individual shader processors (config processors), which indeed take work-load. Great in games that are shader intensive.

2. Stream processors are universal use processors; they can take the task of a shader processor (config processor) by processing the shaders.

3. The higher the better. Mainly these GDDR types of RAM are on cards that require PCI-e*16 V2.0, you'll have to check or your motherboards is equipped with that. As far as I know there's no other requirement specifically for any GDDR type of RAM or DDR type of RAM on a video card. Do note that your card if equipped with the GDDR type of RAM will very likely need a separate power-plug from your power supply. (Either in 6 (75W) or 8 (150W) pin format)

4. The difference between ATI and nVidia is marginal at best. Overall ATI gives a better price to quality ratio at the moment; while nVidia has an extra trick in the form of PhysX
 

Horticulture

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Feb 27, 2009
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Cornish already has your questions covered, though I will add that ATI and nVidia differ a bit in features as well: nVidia is pushing their 3D drivers, while ATI has 'Eyefinity,' which allows a game to spread a single image over multiple monitors, on their 5000-series cards. I don't think either is that compelling, personally.

In general, trying to compare video cards based on their spec sheets is aneurysm-inducing. Guides and benchmarks are easier and will give you much more useful information. Take a look at Anandtech [http://www.tomshardware.com/reviews/best-graphics-card,2569.html] is another good site for benchmarks.
 

WhiteTigerShiro

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Sep 26, 2008
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Thanks for the quick answers, guys. And thanks for the links, Hort. I knew my friend had a benchmarking site that he used, but I could never remember the site. I'll have to bookmark that one before I forget it again. :x