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Author Topic: Cost of Four 5850's  (Read 583 times)
alexanderanon
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August 20, 2011, 08:30:34 AM
 #1

https://en.bitcoin.it/wiki/Mining_hardware_comparison

Why is the price for 4x5850 so much lower than four individual 5850's? $644 for the bundle versus $250x4=$1000? Are they often sold in packs of four or something?

I notice that the multi-card prices for the other GPU's are equivalent multiples of the corresponding single cards.

Thank you.
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haploid23
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August 20, 2011, 08:48:58 AM
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that chart has a lot of variance, so those prices are greatly dependent on when you buy them, where you buy them, and if they're on sale or not. 5850s were once $140 before mining got popular, now it's nearly impossible to find them new anymore. you might run into a new one on ebay or seller on here, but expect over $200 for a new one, or around $150-180ish for a used one

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August 20, 2011, 09:08:04 AM
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Thanks. Is there anything I should look for when buying used? I have a seller that I might meet in person, but I really know very little about GPU's and am unsure of what to ask him about/what to look at when I see the cards.
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August 20, 2011, 10:51:37 AM
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In my opinion you really need to be able to test the card to know if it works well. You can do this after receipt with an online purchase as long as you have some recourse with the transaction, eg. paypal disputes.

In person, if you don't have a system to run it on then you can't tell by looking at it. If you know the person, or can return to their home, and they acknowledge it's subject to the card working fine, maybe it's ok. If this is a "meet in the park" random stranger it would have to be a real good deal to be worth the risk.

If you have a test system you may want to be prepared to run a test depending on how picky you are. You might test it's ability to overclock as long as the seller allows it. A bootable flash stick with a ready to go mining setup may be a good idea.

(I actually run my rig off an Ubuntu Live CD image installed to a 4GB flash stick. After booting I just went thru the Ubuntu Headless Install tutorial on this forum. It boots and starts mining on it's own and I can ssh into it to check/alter the config. With a monitor attached you can also use that as a terminal. When you boot on a new system you have to do the aticonfig init cmd and reboot for it to know about the new cards installed.)

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