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The PowerColor has the smallest heat sync. The XFX heat sync is smaller (only extends above the card). The Sapphire operates at ~47C the XFX ~43C the PowerColor ~49C.įrom visual inspection, the Sapphire has the largest heat sync (it wraps around the card). Running the same (real life) workload (Windows MCE), the Sapphire utilization is ~28% the XFX ~58% the PowerColor ~60%. The PowerColor remains constant at 650 and 400 MHz. The Sapphire and XFX reduce the core and DDR3 MHz under light load (to reduce power and heat). All the cards are 64 bit, so card specs double the MHz. The DDR3 on the two Sapphire cards run at 667 MHz (above spec) the XFX DDR3 at 533 MHz (at spec) the PowerColor DDR3 at 400 MHz (below spec). I am posting my results, comparing the three vendors.Ĭons: Using CPUID HWMonitor all four card cores run at 650 MHz. Other than the amount of DDR3 RAM, I thought the cards would be identical. The Sapphire (I own two) and PowerColor have 1GB of DDR3. My heaviest demand is Windows Media Center (MCE). All the cards meet my needs (I'm not a gamer). Pros: I own multiple AMD/ATI Radeon HD 5450 cards from Sapphire, XFX and PowerColor. This seemless technology dramatically reduces the overall power consumption allowing for break-through energy efficiency. AMD PowerPlayDynamically manage power efficiency and take control of your performance with AMD’s revolutionary AMD PowerPlay power management technology delivering high performance features when needed and conserving power when the demand on the graphics processor is low.AMD CrossFireX multi-GPU technologyAMD CrossFireX multi-GPU technology allows you to double graphics performance via dual GPU scaling.AMD Stream Technology allows you to use the teraflops of compute power locked up in your graphics processer on tasks other than traditional graphics such as video encoding, at which the graphics processor is many, many times faster than using the CPU alone. AMD Stream TechnologyAccelerate the most demanding applications with AMD Stream technology and do more with your PC.

New features in DirectX11 such as Hardware Tesselation, HDR Texture Compression, Multi-threading support and DirectCompute bring lifelike gaming and an experience never possible on a PC before.