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SLI or Crossfire?

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Name: Allen (by Allen Jian)
Date: July 4, 2006 at 13:17:48 Pacific
OS: WinXp
CPU/Ram: P4
Comment:

Hi i'm planning to buy a new computer system dedicated mostly to gaming. When shopping for it, I notice most gaming systems are either a SLI(nVidia) or Crossfire(ATI) built system. My question is what type should I go for?




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Response Number 1
Name: jam
Date: July 4, 2006 at 13:34:26 Pacific
Reply:

neither, it's a waste of money.

But if you insist, 1st you'll have to decide which video card brand you prefer, ATI or nVidia...then you can decide whether to get a Crossfire or SLi capable motherboard. If you have no plans to ever run 2 video cards at once (waste of money), it wouldn't matter which motherboard or which video card type you get, provided they're compatible with each other.


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Response Number 2
Name: Allen (by Allen Jian)
Date: July 4, 2006 at 13:44:35 Pacific
Reply:

Why is it a waste of money? Don't you get better performance in games with 2 cards rather than 1?


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Response Number 3
Name: ravi21
Date: July 4, 2006 at 14:34:26 Pacific
Reply:

in plain english it is a waste because they are far superior single cards out there


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Response Number 4
Name: SN
Date: July 4, 2006 at 14:49:37 Pacific
Reply:

"in plain english it is a waste because they are far superior single cards out there"

Which begs the question...Why not use those cards in SLI or crossfire? The OP didn't say anything about which cards he was planning to use or what his budget is like.

-SN


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Response Number 5
Name: Sabertooth
Date: July 4, 2006 at 15:46:10 Pacific
Reply:

Arguably, you don't have to think about the opportunity cost of an SLI/Crossfire option simply because a single alternative GPU approach has consistently been offering the highest rate of return and there is no sign suggesting if & when this will change.

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Response Number 6
Name: SN
Date: July 4, 2006 at 16:00:43 Pacific
Reply:

That's true for you, me, and probably most of the world. But for somebody with a very large (let's say infinite, for argument's sake) budget, would you not see a performance increase by getting two tippy tippy top-of-the-line cards as opposed to one tippy tippy top-of-the-line card?

Don't get me wrong, I agree with you that a single card is more bang for the buck, but we've seen plenty of people on these forums who value the "bang" quite a bit more than the "buck." :-)

-SN


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Response Number 7
Name: Allen (by Allen Jian)
Date: July 4, 2006 at 16:03:15 Pacific
Reply:

Say I'm one of those people that value the "bang" more than the "buck", which type, SLI or Crossfire?


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Response Number 8
Name: Sabertooth
Date: July 4, 2006 at 16:38:46 Pacific
Reply:

With respect to dual card harnessing, NVIDIA has the edge since they got a headstart on the process and thus seem to have a more profound objective and much better driver/profile support.

ATI's Crossfire can be a little daunting for a novice trying to set it up because some things have to be done in a certain order while NVIDIA's SLI will be more or less a no-hassle task for such a person.

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Response Number 9
Name: jam
Date: July 4, 2006 at 17:55:34 Pacific
Reply:

Well, since you have that kinda money to burn, you may as well get two 7900GTX 512MB cards...about $1000 for the pair.

Then you'll need a board that supports SLi & I'm sure you'll want full x16 support, so the ASUS A8N32-SLI Deluxe is probably the board you'll wanna go with...about $190.

And since you have such high powered video cards, you'll need a high powered CPU, otherwise the cards will be bottlenecked. So you'll probably wanna go with either the FX57 San Diego single core or the FX60 Toledo dual core...about $810.

And you're definitely gonna need a decent SLi certified PSU with 500W or more...about $150.

And don't forget RAM. You'll probably wanna get 4GB (4 x 1GB) of CL-2 PC3200, so there's another $350 or so.

That puts the sub-total at $2500.

I'm sure you're gonna want a decent case, the best HDDs you can find (dual raptors?), DVD burner(s), LCD monitor, etc....Cha-Ching!

All that cash just to play your $40 video game...LOL!


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Response Number 10
Name: Allen (by Allen Jian)
Date: July 4, 2006 at 19:54:02 Pacific
Reply:

hahahahahaha.

Its just that I don't like buying hardware upgrades for my computer every now and then b/c of new games, etc.. So thats why i'm trying to get a computer that won't require upgrades for a while.


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Response Number 11
Name: TMP-Man
Date: July 4, 2006 at 21:04:23 Pacific
Reply:

Try add in these...

Dual PC-Power cooling power supply...
2x Geforce 7950GX2...
Vapochill cooling for stock FX60....
750GB x 4 Raid 0....
SB LIVE 24 bit w/ 7.1 Speaker....
50+ in HD LCD Screen....
Most expensive case with custom paint on it..
T3 connection....

Then play starcraft on it... Wow...

TMP-Man

Asus P5P800-SE
P4 506 @ 4100Mhz 1.525v
Thermaltake CLP0024 w/ 2000RPM FAN + AS5
1GB Corsair 2-3-3-5 DDR400
40GB 5400RPM/120GB 7200RPM HD
Radoen 9500 mod 9700 @ 375/600 CHS+RHS


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Response Number 12
Name: TMP-Man
Date: July 4, 2006 at 21:06:42 Pacific
Reply:

Oh I forgot to add in 1 thing, since starcraft is a synchronized game, so be prepared to get lag down by a 486DX 75Mhz 8MB Ram and 300mb HD system w/ windoes 98 and 14.4k dial-up in it...

TMP-Man

Asus P5P800-SE
P4 506 @ 4100Mhz 1.525v
Thermaltake CLP0024 w/ 2000RPM FAN + AS5
1GB Corsair 2-3-3-5 DDR400
40GB 5400RPM/120GB 7200RPM HD
Radoen 9500 mod 9700 @ 375/600 CHS+RHS


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Response Number 13
Name: jhunt303
Date: July 5, 2006 at 01:07:09 Pacific
Reply:


I think SLI is more of a developed soultion than CrossFire, there are more boards, I have an Sli board with 1 7900GT, which I now think was a mistake!

Why?

Well, by the time 7900GT's drop to a price I'm happy to buy another one, it will be cheaper and better to simply buy two '8600s', or whatever nVidia will call their DX10 cards. If I had thought it through, I would have Sli'd two 7600s...
Do a google for Sli'd 7600 vs 7900GT, wish I hadn't!!


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Response Number 14
Name: Michael J (by mjdamato)
Date: July 5, 2006 at 07:40:02 Pacific
Reply:

IMHO, SLI would be the choice. However, I agree that it is just not a smart decision at this time.

"Its just that I don't like buying hardware upgrades for my computer every now and then b/c of new games, etc.. So thats why i'm trying to get a computer that won't require upgrades for a while."

SLI or CrossFire will NOT negate the need for upgrades. If you get an SLI rig with two 7900GTX cards now, you will get better framerates than a single card solution. But, unless you are running at a very high resolution you would never notice a difference - except in benchmarks. By the time games have advanced to the point where the 2nd video card would really make a difference, there would be new technology avaiable that those cards would not support. So either you would have to have many of the features of the game disabled or the game would not be supported on your system.

Think of it like this. Suppose you had spent the money a year or so ago on two 6800 cards. Well, a year later with the money you saved on the 2nd card you could have bought a singe 7900 card today - which would outperform the dual 6800s.

Michael J


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Response Number 15
Name: jhunt303
Date: July 5, 2006 at 08:25:23 Pacific
Reply:

It's still worth getting an Sli board if you believe all the hype about PhysX processors ;-)



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Response Number 16
Name: gometro33
Date: July 5, 2006 at 09:21:03 Pacific
Reply:

If you're gonna get a top top of the line computer that you want to keep for a while, wait for the DX10 cards come out. DX10 will be around for a long time (as long as DX9 I supposed...) and it will have PhysX-like capabilities.

If you don't mind upgrading, then buy now.

-Matt


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Response Number 17
Name: Fishystix
Date: July 5, 2006 at 09:32:17 Pacific
Reply:

Direct X 10 will support higher end physics but not initialy
unless the video cards will actually support their own
physics processors which for now, they won't. Direct X 10
vidoe cards also wont come out until around early 2007.

As for SLI or Crossfire, I say SLI however, Crossifre it the
more efficient technology. The thing I don't like about ATi
right now is that any Radeon cards that support SM 3.0
are missing an SM 3.0 feature called Vertex Texture
Fetching and was replaced with a per pixel shading
technique dedicated to vertex shading which hurts their
SM 3.0 performance.

But ATi's new generation technology is look much more
promising than its predecessor X1K series as well as
nVidia's G80. The G80 is featuring Direct X 10 support as
well as SM 4.0 support however doesn't have as many
pipelines as ATi's R600 and some of the pipelines on the
G80 aren't all unified unlike the R600 that SHOULD be
exclusively unified pipeline architecture. Plus, ATi is
pushing clock speeds to an intense level, almost achieving
2Ghz on the memory clock as well as having support for
over a gig of dedicated memory.


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Response Number 18
Name: Allen (by Allen Jian)
Date: July 5, 2006 at 14:56:42 Pacific
Reply:

Hmm, maybe I should just wait for DX10 cards to come out and get 1 of those instead of dual cards. Any idea how long till these come out?


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Response Number 19
Name: TJ297
Date: July 16, 2006 at 22:02:21 Pacific
Reply:

Get 1 top of the line card... unless u have money to wipe your behind with, it aint worth it...


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Response Number 20
Name: evilhomer
Date: August 1, 2006 at 12:34:57 Pacific
Reply:

Choose the same as my config:

AMD Athlon 64 X2 4400+ 2,2Ghz
Asus A8R32-MVP Deluxe s939
2x ATI Radeon X1900XT CrossFire 1GB
Corsair TWINX2048-4000PT DDR-DIMM 2048MB
2x Maxtor 250GB SATAII
OCZ GameXstream 700w
Plextor DVD burner IDE
Creative SB XFi Fatal1ty FPS
Thermaltake Black Armour

that config owns

ATI FTW!!!!!


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