A Closer Look

The cooler of the HD 4830 Green is a fairly simple piece of technology. A large non-copper baseplate soaks up heat and transfers it to cooling fins that sit directly below a fan. There are no heatpipes present, nor are they needed.


No PCI-Express power connector! All power is coming from the PCI-E slot.


The GDDR3 memory chips are made by Hynix and carry the model number H5RS5223CFR-N0C. With a cycle time of 1.0 ns, they are specified to run at 1000 MHz.


A Nexsem NX2422 is used to control the GPU voltage circuitry. It doesn't have an I2C interface so software voltage control is not possible.


This is AMD's RV770 GPU. It is made on a 55 nm process at TSMC Taiwan, the 956 million transistors occupy 256 mm² of die area.