A Closer Look

The cooler looks fairly simple. It manages to keep the card cool without any fancy heatpipes or expensive copper baseplate. It uses a complex fin design to maximize available surface area.


The HIS Radeon HD 5550 requires no additional power connector, all power is supplied via the PCI-Express bus.


The GDDR5 memory chips are made by Hynix, and carry the model number H5GQ1H24MFR-T0C. They are specified to run at 1000 MHz (4000 MHz GDDR5 effective).


The voltage regulator in use is a uPI uP6201 which doesn't feature software voltage control, but that's not a big problem for a card in this performance class.


AMD's Redwood GPU comes with 627 million transistors and is produced on a 40 nm process at TSMC Taiwan. The die size is 104 mm².