8800GT is around %15 faster than HD3870
AnandTech: ATI Radeon HD 3870 & 3850: A Return to Competition
And about power consumption, the HD3870 consume less power only at idle. At full load they consume about the same.
About price, the HD3870 is not always cheaper. You can get 8800GT 512MB for $225 from NCIXUS.
I don't agree that HD3870 is better in muti-GPU setup. This is questionable
Call of Duty 4 : Crossfire vs. SLI: Radeon HD38x0 vs GeForce 8800 GT
This review is more recent than the review from experience.com
AnandTech: ATI Radeon HD 3870 & 3850: A Return to Competition
And about power consumption, the HD3870 consume less power only at idle. At full load they consume about the same.
About price, the HD3870 is not always cheaper. You can get 8800GT 512MB for $225 from NCIXUS.
I don't agree that HD3870 is better in muti-GPU setup. This is questionable
Call of Duty 4 : Crossfire vs. SLI: Radeon HD38x0 vs GeForce 8800 GT
This review is more recent than the review from experience.com