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Question about VRAM?

Last response: in Graphics & Displays
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October 29, 2011 9:26:07 PM

Hi all,

I am building my first budget gaming rig. I am happy with medium settings, as an FYI. I found this GTX 460 for $130, ($80 after rebate!):

Palit NE5TX460FHD79 GeForce GTX 460 768MB GDDR5 PCIe 2.0 x16 Video Card
http://www.microcenter.com/single_product_results.phtml...

Would 768MB be fine for medium gaming? I would be getting another one to SLI in the future.

OR.

Should I go with one 1GB GDDR5 XFX Radeon HD 6770 and then Crossfire it in the future? (Price is $120).

What do you guys think?

More about : question vram

a c 130 U Graphics card
October 29, 2011 9:31:22 PM

The 460 is a better card than the 6770 even with it being the 768 version. Is it over clocked or is it standard.
Also what is the rest of the machine going to be ? What CPU are you using with these cards ? What resolution ?
Where are you shopping ?

mactronix :) 
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October 29, 2011 9:34:31 PM

It is standard. The rest of the build will be an i5 2400, 8gb ripjaws 1333 ram, 600w psu (corsair), rosewill challenger case, dvd drive, havent quite picked a mobo yet.

The resolution will be 1900 x 1080.

I am shopping at a combination of newegg.com, amazon.com, and microcenter.
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a c 358 U Graphics card
a b 4 Gaming
October 29, 2011 9:41:10 PM

Generally speaking, the higher the resolution you play at, the more VRAM you want on your video card. For a 1920x1080/1920x1200 1GB of VRAM is enough. Above that then you want more VRAM. I would say that for 1680x1050 512MB of RAM would be adequate, but this resolution is kinda like on the borderline as to what's better, 512MB or 1GB?

VRAM is not everything though, because the GPU must be fast enough to take advantage of the available VRAM. For example, the Radeon HD 5670 was a pretty good mainstream gaming video card when it 1st came out. However, there is virtually no performance difference between the 512MB version and the 1GB version. The GPU core was simply not fast enough to use that extra 512MB of RAM.

I agree that the GTX 460 768MB will give you better performance than a Radeon HD 6770 1GB.
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October 29, 2011 11:13:53 PM

So a 768mb gtx 460 ($130) at mediums settings, at 1900 x 1080 resolution, is better than a 1gb radeon hd 6770 ($120) at 1900 x 1080 resolution?
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a c 376 U Graphics card
October 29, 2011 11:22:32 PM

A GTX 460 769mb is approximately 25% faster than an HD6770 at 1080p on average at reference speeds. The GTX 460 can also OC a ton which would make the difference even larger.
If you are planning to SLI keep in mind that the GTX 460 768mb is already quite rare so you'll probably need to get a used card of ebay to add a second when the time comes.
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!