Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > Mixing graphical ram quantities on a 4870..

Mixing graphical ram quantities on a 4870..

Forum Graphic & Displays : Graphics Cards - Mixing graphical ram quantities on a 4870..

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dreadhead   10-10-2008 at 02:16:11 AM

Alrighty,

I already have a 4870 - 512mb.

If I were to get a 1gb version of the same card and put it into crossfire, how much ram could be utilized?

I have heard that only the ram on one card may be used. Would this mean that the system would use the 1gb, or the 512mb?

Thanks in advance.

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murdoc   10-10-2008 at 05:15:37 AM
- 0 +

I think the textures will get shared.

so if say the game takes 200 mb of texture space then 1 card gets 100mb and the other will get the other 100mb. So if you have CF 4870 1gb version you technically have 2 gb because each card contains 1gb of storage.

**Edit**
ops.. I wasn't reading carefully.. yes Dekasav is correct. Only 512 mb gets used because the 1 GB edition will limit itself to match the limiting card (the 512mb)


Message edited by murdoc on 10-11-2008 at 01:25:56 AM
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Dekasav   10-10-2008 at 07:33:25 AM
- 0 +

The cards will only use 512Mb of the RAM. Half of the new/second card's vRAM will go unutilized.

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dreadhead   10-10-2008 at 12:00:43 PM
- 0 +

Thank you for the response.

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shaundwm   10-10-2008 at 12:17:12 PM
- 0 +

Unless you are going about 1900x1200 then more then 512 will seldom be utilised anyway

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