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SLI vs. CrossFire

Author: Gabriel Torres
Type: Articles	Last Updated: April 15, 2008
Page: 4 of 8

Real-time pricing for EVGA 015-P3-1582-AR
EVGA GeForce GTX 580 Superclocked 1536 MB GDDR5 PCI Express 2.0 2DVI/Mini-HDMI SLI Ready Limited Lifetime Warranty Graphics Card 015-P3-1582-AR SYNX2858921 Electronics Read
Amazon: $491.49	Newegg: $509.99
TigerDirect: $509.99	CompUSA: $509.99

SLI Summary

Below you can find quick reference tables on SLI. As you can see SLI mode can also be used to increase the maximum resolution your video card can generate.

Mode	Supported Video Cards	Maximum Resolution	Maximum SLI AA
SLI	GeForce 6600 and up All GeForce 7 All GeForce 8	2560x1600	16x
Quad SLI	GeForce 7950 GX2 GeForce 9800 GX2	2560x1600	32x
Three-way SLI	GeForce 8800 GTX GeForce 8800 Ultra	2560x1600	To be confirmed
Hybrid SLI (GeForce Boost)	GeForce 8400 GS GeForce 8500 GT	To be confirmed	To be confirmed
Hybrid SLI (HybridPower)	GeForce 9800 GTX GeForce 9800 GX2	–	–

Below you can find a list with all chipsets that support SLI. Under “PCI Express Mode” we listed what is the real transfer rate of the x16 PCI Express slots when SLI mode is enabled. Keep in mind that when SLI mode is disabled and you have only one video card installed the main PCI Express x16 slot will always work at x16.

Chipset	Supported Modes	PCI Express Mode
nForce 780i SLI nForce 790i SLI	SLI, Three-way SLI, Quad SLI	Two PCI Express 2.0 x16, One PCI Express 1.0 x16
nForce 780a SLI	SLI, Three-way SLI, Quad SLI, Hybrid SLI	Two PCI Express 2.0 x16, One PCI Express 2.0 x8 (all work at x8 when three video cards are installed)
nForce 750i SLI	SLI, Quad SLI	Two PCI Express 2.0 x8
nForce 750a SLI	SLI	Two PCI Express 2.0 x8
nForce 680i SLI	SLI, Three-way SLI, Quad SLI	Two PCI Express 1.0 x16, One PCI Express 1.0 x8
nForce 680i LT SLI	SLI, Quad SLI	Two PCI Express 1.0 x16
nForce4 SLI X16 nForce Professional 3600 and 3050 nForce Professional 2200 and 2050	SLI	Two PCI Express 1.0 x16
nForce 590 SLI	SLI, Quad SLI	Two PCI Express 1.0 x16
nForce 650i SLI nForce 570 SLI (AMD)	SLI, Quad SLI	Two PCI Express 1.0 x8
nForce 570 SLI (Intel) nForce 570 LT SLI nForce 560 SLI nForce 500 SLI nForce4 SLI nForce4 SLI XE nForce Professional 3600 nForce Professional 3400 nForce Professional 2200	SLI	Two PCI Express 1.0 x8
nForce 8300 nForce 8200 nForce 8100 nForce 730a nForce 720a	Hybrid SLI	One PCI Express 2.0 x16

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