Video cards:
9800 GTX vs. SLI vs. 3-way SLI. vs. Quad SLI @ HardOCP
ASUS EN9600GT Silent 512MB @ Techgage
EVGA UV Plus+ External USB VGA Adapter @ PCPer
MSI GeForce 9600GT 1GB OC @ TweakTown
ECS N8800GT-256MX @ Legit Reviews
XFX GeForce 9800GTX Black Edition @ Gamepyre
Diamond Radeon HD 3870 1GB @ PCPer
GeForce 9800 GX2 - Commemorative Box Edition @ HardOCP
NVIDIA Hybrid SLI and HybridPower Benchmarked and Explained @ Legit Reviews
S3 Chrome 430 GT @ TweakTown
nForce 780a SLI/Asus Crosshair II Formula Tested @ AMDZone
Diamond Viper HD 3650 1GB @ Overclockers Online
Old Lamps for New: Nvidia GeForce 9800 @ xbitlabs
Asus EAH3870 X2 1GB @ bit-tech
Asus EAH3850X2 @ Neoseeker
Foxconn 9600GT-512NOC @ Futurelooks

Motherboards and Chipsets:
EVGA 750i SLI FTW @ HardOCP
MSI K9A2 Platinum @ Motherboards.org
ASUS M3N-HT Deluxe @ PCPer
Gigabyte X48T-DQ6 @ bit-tech
NVIDIA nForce 7 AMD Series Arrives - ASUS M3N-HT Deluxe @ Legit Reviews
ASUS M3N-HT Deluxe @ HardOCP
ASUS P5E3 Premium WiFi-AP @ Techgage
MSI X48C Platinum @ t-break
Abit IX38 QuadGT Socket 775 @ 3dGameMan

Platforms and Chipsets:
Nvidia's nForce 780a SLI chipset @ TechReport
780a launch: Asus M3N-HT Deluxe @ Neoseeker