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512mb vs 1gb video memory?

Last response: in Graphics & Displays
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June 17, 2010 3:38:20 AM

I am currently shopping for a $100-140 video card on Newegg and came across this GeForce 9800 GTX+:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Everything about it looks great (good numbers) except it only has 512mb of video memory. My monitor is 1680x1050 and I've been told by some sources that 1gb is only needed for higher resolutions, but I've also been told that 1gb is needed to run some games on ultra settings. The only games I have in mind are Starcraft 2 (which I would like to run on ultra) and future MMOs. There was a Starcraft 2 benchmark article from this site but it only referred to higher tier cards not within my budget.

So I'm really not sure whether the 512mb will do or should I aim for one with 1gb like this HD 4850:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Suggestions?


The 2nd one is lower in other stats (core clock, memory clock) and I really have no idea what is more important.

More about : 512mb 1gb video memory

a c 1410 U Graphics card
June 17, 2010 3:42:52 AM

For your resolution cards like HD4850 or GTS250 and up will benefit from 1Gb of ram over 512Mb specially if you turn on AA and AF
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a c 189 U Graphics card
June 17, 2010 3:34:40 PM

Do not get 9800GTX+, that's an old card, you'll better with GTS250 or HD4850, for your resolution it's good to get 1GB version...
Make sure you has a decent PSU...
What is your PSU? brand? model?
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a b U Graphics card
June 17, 2010 4:21:48 PM

First off, you can't directly compare clock speeds between Nvidia and ATI cards, hell, you can't even do it between different cards from the same company. Case in point, a 5850 clocks at 725mhz, and my 4870 clocks in at 750. There is no doubt that the 5850 is a vastly superior card. Each company and card model has different architecture, and will perform different levels of "work" per clock cycle.

I ran a single 4870 512mb for a year before getting a second one very recently. 1680x1050 was the resolution I would usually drop to if I couldn't max out a title at 1920x1080. Granted, the 4870 it is a stronger GPU than the 4850 mentioned, but the need for extra video memory can only be determined by the the GPU's ability to actually utilize it. Having more video memory than needed performs the same as having enough.

I would consider the 4850 the starting point for GPUs that can use more than 512mb of video memory. For your budget (100-140) a 5750 might be best. It will perform the similar or better than a 4850 while using a lot less power, and can be had with 1gb memory for some piece of mind in that arena. Not to mention that the 5750 uses GDDR5, which itself makes a big difference from the DDR3 on the 4850.

XFX 5750 1gb (double lifetime warranty) 130 free shipping:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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June 17, 2010 8:22:19 PM

wa1 said:
Do not get 9800GTX+, that's an old card, you'll better with GTS250 or HD4850, for your resolution it's good to get 1GB version...
Make sure you has a decent PSU...
What is your PSU? brand? model?


Antec BP500U 500W:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I'm assuming since it's above the 450W minimum for both cards, the PSU won't be a bottleneck?

---
Also thanks for the help everyone.
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a c 124 U Graphics card
June 17, 2010 8:35:25 PM

I saw a benchmark, I really can't remember where, and basically the difference between 512 and 1gb in terms of FPS was minimal until at least 1920x1080 and at highest resolutions it had a fair impact. Still, as these guys are saying I'd look for a newer card in the same price range.
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