Benchmark Reviews posted a review on the PowerColor Radeon HD5850 PCS+ Video Card

NVIDIA and AMD build such great products that it's not always easy for their partners to improve upon the initial design. A perfect example is the ATI Radeon HD 5850, which has earned accolades from consumers and critics alike. While the original ATI design worked well, there's always room for improvement. Offering a robust PCS+ (Professional Cooling System Plus) feature that adds better thermal management over the Cypress GPU, the PowerColor Radeon HD5850 is designed with overclocker enthusiasts in mind. Delivered with a factory overclock, Benchmark Reviews tests the HD5850 PCS+ AX5850-1GBD5-PPDHG model against the original reference ATI design, and a large collection of competing graphics cards.

PowerColor Radeon HD5850 PCS+ Video Card Review