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PC World Dream PC Build

3 Posts tagged with the 3870_x2 tag
13

It's An nVidia Build Now

Posted by jonljacobi Mar 22, 2008

I haven't opened the boxes yet, but I have an eVGA 790i Ultra SLI motherboard and two 9800 GX2s sitting in the cube. As I hinted a while ago, this was the stuff that we originally planned on. Alas, nVidia pushed the NDA back two weeks till today, so I wasn't sure we would have the parts in time.

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Even so, I would've stuck with the D5400XS and ATI 3870 X2's (which completely rock for the price) if it weren't for the issues I encountered. I'm of course assuming my road will be a little less rocky with these components. One thing you can count on--you'll hear about it either way.

More later.

Cheers, Jon

P.S. The cards are now separated into the 1st and 3rd slots.

13 Comments Permalink
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I was afraid of this. I actually noticed that the D5400XS design places its PCI slots in between the first three 16x PCIe slots a while ago, but was hoping I could manage some room for my beloved EMU 1616m PCI sound card. If you know anything about the current crop of top-end graphics cards (or simply look at the photo featuring the two Diamond Viper 3870 X2's below) you'll know that owing to huge fans and heatsinks, they're extremely wide abeam. Alas, this high-carb horizontal profile also means that they often block access whatever slot is next to them. I'm guessing the less-than-optimal placement of these auxiliary slots is another sign of the D5400XS's server legacy--servers don't do games so thin, non-slot blocking graphics cards are the rule.

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As you can see (or can't!), gone is access to both auxiliary slots. If I move one of the 3870 X2's over to the third 16x PCIe slot, I lose the last PCIe slot which I we need for the Adaptec 3405--not a viable option. That means I'm going to have to part with the EMU 1616m though I should be able to fit the Hauppauge WinTV-HVR-1800 tuner card in the third slot 16x PCIe slot. I don't want to go USB with the tuner as I've heard unflattering comments on that type's performance. What a bummer. I'll start looking at an external USB or Firewire audio interface. EMU's O404 is a nice unit and offers many of the same features as the 1616 and sounds almost as nice.

Look at the picture below, and you'll see that routing this mass of power cables is going to be painstaking as well. Each 3870 X2 (the X2 means there are two GPUs on board) requires both an auxiliary 6-pin and 8-pin PCIe power connection!!

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By the way, resting on top of the power supply is one of the two Plextor BD-900 Blu-ray burners that will be on board. We couldn't get the LGs for some reason, but I've been a fan of Plextor's products for a long time now so I won't be shedding many tears. This means that along with the rest of the world, PC World has forsaken HD DVD. Sigh.

Next up is a plumbing issue. What fun! Actually, I mean that--I live for this stuff (and music). Some people do jigsaw puzzles, I do computers. B-)

L8tr, Jon

Breakout box for my cherished 1616m below... :_|

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8 Comments Permalink
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After careful consideration. I decided on using RAID 5 instead of 0 with the four 15K drives. In case you're not familiar, RAID 0 is simple striping (dividing the data and distributing it evenly across the drives) and provides very good read and write performance. But there's absolutely no fault tolerance, i.e., if one drive goes--your data is history.

RAID 5 on the other hand offers superb read speed, but isn't quite as hot as RAID 0 in the write department. It does, however, offer fault tolerance so if a drive dies, you can still rebuild the array (a pretty slow process) and get your data back. Of course you lose some space to the parity information which is distributed across the drives but there's still about 900GB of storage. Since the 15k drives are actually secondary storage on this rig, I figure RAID 5 was appropriate.

It's probably a good thing I decided on RAID 5 anyway. Building the array, the routine blew up at about the 63% mark. I've verified the media integrity of each drive (which took about 4 hours), upgraded the BIOS on the 3405 card and checked the cable. All seems hunky-dory so I'll set it in motion once more and let you know how it goes.

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If you thought that 100 hours total labor was sketchy... I'm at about thirty and the thing isn't even in the case. By the way, that doesn't include all the time folks spent researching and communicating over this thing.

Diamond has thoughtfully donated two Radeon 3870 X2 cards which I requested after hearing that the ATI cards may play better in multiple monitor setups.

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I'll be checking them and the multiple monitor setup for the first time later today. Alas, there's probably no chance they'll be in the case when it ships because, believe it or not, they're too inexpensive. That's right, too much bang for the buck. We can't have the retail value of the Dream PC fall below the level we announced it at. $30,600 or so.

That's life on the dreamy bleeding edge--for now. I'm about to install Vista 64 and some apps, so I'll be in touch about that as well.

Happy computing! Jon

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