Thursday, April 8th 2010

GeForce GTX 480 Supports 4-way SLI?

Soon after EVGA laid its hands on stocks of GeForce GTX 480 graphics cards, it claims from an internal test that 4-way SLI is possible on the reference design GTX 480 graphics cards. The GTX 480 was advertised to work with up to two more of its kind in 3-way SLI, in NVIDIA's presentations to the press. EVGA's feat of running four GTX 480 cards was possible on its X58 Classified 4-way SLI motherboard, which has room for four graphics cards, and a special SLI bridge that connects to four NVIDIA graphics cards with two SLI interconnect bridges each. EVGA released a special-edition GeForce GTX 285 4-way SLI ready graphics card to go with the motherboard.

The EVGA X58 Classified 4-way SLI isn't the only motherboard to support 4-way SLI, the recently released EVGA Classified SR2 also ships with the special SLI bridge. No other motherboard vendor released a 4-way bridge, yet. EVGA demonstrated the 4-way SLI setup with a run of Unigine Heaven, although it did not give away any performance numbers. 4-way SLI is not to be confused with Quad-SLI, which is also a four-GPU SLI configuration, but involves a 2-way SLI connection between two dual-GPU graphics cards (such as GeForce 9800 GX2, GTX 295, MARS). Any SLI-supportive motherboard supports Quad-SLI.
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82 Comments on GeForce GTX 480 Supports 4-way SLI?

#1
cronicash
Scuttlebutt is that nVidia is looking into 4-way SLI as an extension, since more MOBOs are becoming four-slot capable. As of now, though, you have to have a specially-designed set of BIOSs to support the extra interrupts the PCIe controller needs and the teaming coordination across four seperate slots (Quad currently only uses two, and of course three for Tri-SLI).
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#2
iamverysmart
If you're using it for folding, isn't the 480 more energy efficient then the 5870?
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#4
Nicksterr
So, nvidia already has a very limited amount of these cards produced for distribution, and here you have a vendor hogging 4 puppies for sh1ts? Wow, good stuff.
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#5
Dark_Webster
Aren't my eyes decieving me? A toaster installed on a PC? Commodities ;)



Seriously, who would buy such a set?
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#6
InnocentCriminal
Resident Grammar Amender
by: Dark_Webster
Seriously, who would buy such a set?
I'd like to think of the stupidly rich enthusiasts that have a massive boner for folding.
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#7
Hayder_Master
by: va4leo
BENCHMARKS PLEASE!! ROFL :respect:
by: tigger
My god imagine the heat from the back of the cards,toast anyone.Looks impressive but the heat and noise must be amazing.
by: Bo$$
soo much heat expect atleast 90% of these cards to come back on RMA aleast 2-3 times
just 5 loops of benchmarks you throw away last three cards and smell some hot dog
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#8
Bjorn_Of_Iceland
Really, It would take a few minutes to press print screen on a bench result, place on mspaint, and upload it to an image host. (or in 3dmark's case, upload an orb, or a GPUz verification)

vs several minutes spent in changing the CPU cooler, and taking pics of it.
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#9
btarunr
Editor & Senior Moderator
by: cronicash
Scuttlebutt is that nVidia is looking into 4-way SLI as an extension, since more MOBOs are becoming four-slot capable. As of now, though, you have to have a specially-designed set of BIOSs to support the extra interrupts the PCIe controller needs and the teaming coordination across four seperate slots (Quad currently only uses two, and of course three for Tri-SLI).
4-way CrossFire capable motherboards have been around for close to half a decade. So those issues are long ironed out.
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#10
imperialreign
by: DaedalusHelios
That is rather pessimistic. Watercooling and overclocking three cards would yield much higher frames and higher benches. Four has no relevance unless you are folding. People that like to spend large sums of money care about performance too. There are always the ignorant too. Like those who buy a 5970 to run one 1680x1050 LCD.
It depends.

For gaming, some of us demand a certain level of performance. Me, I know for a fact one of my cards can easily handle my native res without breaking a sweat . . . but I can't settle for anything less than x FPS at my native res . . . and I also prefer to game with all the eye candy on, too . . . I'm just a bit goofy like that.

Do I know multi-GPU doesn't scale well? Yerp. Does it also depend heavily on the game? Yerp. Does it have more of an imp0act at higher res and with the eye candy enabled more than not? Yerp. Does it bother me that some might consider it a waste? Not at all.

But. Unlike most others, I also put my GPUs to work when I'm not at home or gaming . . . F@H keeps them busy.
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#11
Live OR Die
that would rape 3DMARK i wanna see what that would pull in it def would knock ATI from 1st place
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#12
Zubasa
by: Live OR Die
that would rape 3DMARK i wanna see what that would pull in it def would knock ATI from 1st place
That only happens if both are at stock. ;)
Both of us knows that benchers rately leave their cards at stock.
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#13
Sasqui
by: DanTheBanjoman
Must be fun to cool. Specially the two in the middle.
My immediate thought as well. Actually there are three with the fan completely blocked.

2000w of PSU needed and probably a min of two 360mm radiators and two or three pumps for proper cooling via water.
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#14
gumpty
by: Sasqui
My immediate thought as well. Actually there are three with the fan completely blocked.

2000w of PSU needed and probably a min of two 360mm radiators and two or three pumps for proper cooling via water.
Na, the PCBs have that cutout in the PCB, so the top card (closest to CPU) will still get a little bit of cool air through that.
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#15
mlee49
OMG Evga is B@llZors for even trying this, the heat the heat the heat holy reactor of a power supply, this is more stupid than my setup Evga is 1am3
Fanboi out-

Ok, seriously less than 1% of users will use a 4x SLI/CF setup and those that don't use it don't understand why they do it(not to grill hotdogs).
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#16
mdm-adph
by: InnocentCriminal
I'd like to think of the stupidly rich enthusiasts that have a massive boner for folding.
Who live in a house with no heater, in the Antarctic.
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#17
mab1376
That's so ridiculous! Only cost $2k just for you gfx cards. :laugh:

by: mdm-adph
Who live in a house with no heater, in the Antarctic.
Or someone with a shit-ton on LN2
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#18
Sasqui
by: gumpty
Na, the PCBs have that cutout in the PCB, so the top card (closest to CPU) will still get a little bit of cool air through that.
LOL, about 1 sq inch worth.
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#19
Binge
Overclocking Surrealism
by: btarunr
Probably EVGA's own Classified SR2. 1200W continuous, 1500W peak.
Looking at the picture they used 2 different PSUs. I recognize modular connectors from an Antec quattro 1200W, and a Corsair HX1000W.
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#20
rodneyhchef
The SLI bridge connector doesn't look right. Why does the 'bottom' card have two connections and the one above it only have one? Surely it should be the other way around? Unless they are connected out of sequence? (1-2, 2-4, 4-3 maybe?) I guess we now know why the PCBs for these have extra vent holes in the back. :D
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#21
btarunr
Editor & Senior Moderator
by: rodneyhchef
The SLI bridge connector doesn't look right. Why does the 'bottom' card have two connections and the one above it only have one? Surely it should be the other way around?
Because it's an SLI of two SLI arrays.


In 3-way SLI:



With Quad-SLI:



So 4-way SLI is implemented like Quad-SLI, albeit over four physical cards. In that 4-way SLI pic, card 1 and card 2 are like GPU1 and GPU2 of card 1, while card 3 and card 4 are like GPU1 and GPU2 of card 2. So the two sub-arrays are linked.

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#22
gumpty
by: Sasqui
LOL, about 1 sq inch worth.
Yep. Those fans will be working like mad to draw in enough air. I feel sorry for them. Did they deserve this fate?
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#23
Mescalamba
They run at 50% of clocks and 0.7V right? Cause otherwise you could really use it as toaster..
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#24
Sasqui
by: gumpty
Yep. Those fans will be working like mad to draw in enough air. I feel sorry for them. Did they deserve this fate?
From all I've heard about their development and dealings with TMSC, they brought it on themselves. It does suck for the industry as a whole.

Interesting how chip design sounds a lot like software design, which share similarities with legislation and sausage making. It ain't pretty.
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#25
MicroUnC
Al Gore would love to see that, lol jk :)
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