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Buying a 5870 but unsure about this

post #1 of 8
Thread Starter 
Some of the 5870's I've seen have 2 6-pin, and others have 1 6-pin and 1 8-pin. Are the 8 pin models faster and/or will they OC higher because of the more power available? Someone please help me out here as this is probably going to be the most expensive single component I've bought for my siggy.
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The Butthurt Box
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post #2 of 8
The 8-pin ones have 2GB of Vram and are considered the Eyefinity model for the 5870.
They work much better in Crossfire than the 1gb models.

I have the 1GB version and had it underclocked for a while at 1920x1080 and it maxed out almost every game, so you decide if it's worth the extra money for the 2GB model.
    
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post #3 of 8
Reference board is 6+6. So are most custom PCBs.

6+8 might be the SOC version from Gigabyte probably, or the TwinFrozrII from MSI. Don't know either. ninja'd: EyeFinity6 is the one with 6+8. Sowwy


By the way, why not a HD 6870 or HD 6950? They're not that much expensive, and provide much better per watt performance. The 6950 actually destroys the HD5870. 6870 is more of a power savvy card, eating much less power than the HD5870, much better tessellation performance, at a minor 5% performance loss.
   
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post #4 of 8
Thread Starter 
Quote:
Originally Posted by Jaguarbamf View Post
The 8-pin ones (Cypress) have 2GB of Vram and are considered the Eyefinity model for the 5870.
They work much better in Crossfire than the 1gb models.

I have the 1GB version and had it underclocked for a while at 1920x1080 and it maxed out almost every game, so you decide if it's worth the extra money for the 2GB model.
I won't be doing CF, in fact after this I'm going to seal up my current sig rig and if I upgrade later on I will just start a new build instead.

Thanks for clarifying
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The Butthurt Box
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post #5 of 8
The one I have here is 2x 6pin. Its a reference amd 5870, so I would assume all of the 3rd party versions would be the same.
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post #6 of 8
Thread Starter 
Quote:
Originally Posted by Artikbot View Post
Reference board is 6+6. So are most custom PCBs.

6+8 might be the SOC version from Gigabyte probably, or the TwinFrozrII from MSI. Don't know either. ninja'd: EyeFinity6 is the one with 6+8. Sowwy


By the way, why not a HD 6870 or HD 6950? They're not that much expensive, and provide much better per watt performance. The 6950 actually destroys the HD5870. 6870 is more of a power savvy card, eating much less power than the HD5870, much better tessellation performance, at a minor 5% performance loss.
I'm on a $250 budget and I though the 6950 was on par with the 5870. It seems like the 5870 overclocks much better too. As for the 6870, it's about 5850 level performance and too expensive for what you get. But I was considering both of them.
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The Butthurt Box
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post #7 of 8
Quote:
Originally Posted by railfan844 View Post
Some of the 5870's I've seen have 2 6-pin, and others have 1 6-pin and 1 8-pin. Are the 8 pin models faster and/or will they OC higher because of the more power available? Someone please help me out here as this is probably going to be the most expensive single component I've bought for my siggy.
You should be ok getting the 5870 1GB model with the 2 6-pin connectors. FYI, the 2 extra pins on the 8 pin PCIE power connector are Grounds. Also, you may want to consider the 6950 2GB, which can be had for a little more (~$270) and will unlock into a 6970.
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post #8 of 8
Quote:
Originally Posted by railfan844 View Post
I won't be doing CF, in fact after this I'm going to seal up my current sig rig and if I upgrade later on I will just start a new build instead.

Thanks for clarifying
If you plan on keeping the card for a while, you may want to look into the 6xxx series cards. They have better tessellation performance in most cases.

Good luck with your purchase and enjoy the choice you've made.
    
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