Just bought 4870 1gb

July 11, 2009 at 00:11:18
Specs: Windows Vista
i want to crossfire two of these i just bought. what motherboard and case should i buy?

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July 11, 2009 at 05:16:02
We can't recommend a board without knowing which CPU you're gonna use. Do you have a damn good power supply? Crossfire configurations require a lot of power. You should have at least 4GB RAM too.

case - $50-75
board - $100-125
power supply - $75-100
4GB RAM - $50-75
another HD 4870 - $130-160

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July 11, 2009 at 11:09:48
Jam is spot on here. Most folks build their systems around a specific CPU. This, in turn, will dictate (limit) what mobo you should use (it's a chipset/socket thing). Within mobo options you must choose from those that have the available PCIe slots you will need for your Xfire setup, realizing that due to their size (fans) the gfx cards are going to obscure a couple of slots. This may or may not be a consideration if you have other cards you need to install.

4GBs RAM is OK (you will realize less) but an x64 system would use all and over 4GB.

PSU: depending on the mobo (which will have a stated minimum requirement) and components, I should think you will be looking at 750W as an absolute minimum (1000W would be good)

I have an Xfire system using dual 4830s in a Antec 900 case that comes with four LED fans including a 200mm fan that exhausts heat from the top. I OC my CPU and never exceed 52C in an 80 degree room. Depending on the number of HDD/ODDs you have, you can add two more fans. It also has ports for a liquid cooling system. Antec is worth a look.

The only other thing I would add is that I think Jam's prices are rather conservative but if you need to upgrade, you will eventually see what's out there.


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July 11, 2009 at 12:42:18
well ive been looking to this article for reference. is it still what i should be following? or should i go for intel?


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July 11, 2009 at 22:11:39
One up front question one might ask is how much are you willing to spend? That may significantly limit your choices.

First off, you ask about Intel. This is where you start - regardless of the article. You owe it to yourself do read up on each component you are considering.

Essentially, you have two choices AMD and Intel. What you get depends on what your goals are - and cost: Intel is going to cost more but may give you less depending on your intentions. For example, I chose the AMD Phenom II 720 2.8 BE which I have OCed to 3.3. on air. I chose this particular processor because it is an OCing dream and is cheaper than Quad Core which is generally not needed because very few apps/games utilize four cores today (unless you are into serious number crunching) That's MY rationale; you should look at AMD, Intel and then CPUs within each brand and decide which suits you and your wallet. The thing to do is Google and read tech review sites (there are several good sites that just do reviews) and see what you think. At the same time you will learn about the finite properties of each component.

One interesting note: in the article look at their $850 system. I have the AMD Phenom II 720 2.8 BE, and ASUS M3A79-T Deluxe (an excellent OC mobo), two 750GB WD 7200 SATA HDDs, one Seagate 320 GB 7200-10 HDD, two Lite-On DVD-RW dual layer ODDs (one lightscribe) one 52x IDE CD-RW ROM, two ATi Radeon HD 4830 gfx cards, a Zalman 750W modudlar PSU (OK with the 4830s) and the Antec 900 case, and an LG L227WTG LCD. I spent about two months researching the components and decided on each based on reviews, needs, mfr reputation, features. Note the use of Antec cases throughout. Antec makes a great gaming case for not a lot of money. The 900 is takes the standard ATX mobo but is bigger than most ATX cases and quite roomy for good air circulation and components.

If you are going to lay down mucho deniro for your system, you really owe it to yourself to research each part. If you want to know, post back and I will give you my rationale for each of the components I bought.


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July 12, 2009 at 01:05:39
i would like the phenom 2 x4 955. should i get a motherboard that will do dual x8 or should it be dual x16. i already have 2 xfx 4870 1GB GPU'S. i would like a fluid experienceand im hoping the AMD setup will be fast and versatile.

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July 12, 2009 at 14:55:20
Depends on a few things such as monitor resolution, demand of the game but . . . as a general statement, people report an average of about a 5% loss x8 v. x16 duals. (I've read as high as 10%) Note, however, we are talking about intense testing scenarios; most agree that the the difference would not be readily visible in most situations. My mobo (ASUS M3A79-T Delue) supports x16 duals but I got the mobo for other reasons.

If you are interested, you can read about the ASUS at http://www.motherboards.org/reviews... but more importantly, I think Motherboards.org is one of many excellent review sites where you can check out any hardware.

And, if you have not already noticed, you face two "problems": components become rapidly obsolete so as you are checking things out, progress may pass you by. The other thing is, there are sooooooo many different components to choose from and mfrs who make them. Lets say you want a 790FX/SB750 chipset. Great! But whose?

Anyway, I don't mean to confuse the issue: to me, no practical difference between dual x8 v. x16.


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