AMD 780G Chipset / AMD Athlon X2 4850e Platform Review :: AMD 780G Features

03-05-2008 · Category: Hardware - Processors

By Ben Sun

North Bridge AMD 780G

  • ATI HD3200 Graphics
  • DirectX 10.0
  • Pixel Shader 4.1
  • Vertex Shader 4.1
  • 500Mhz Core Clock speed
  • 400MHz Memory Speed
  • HyperMemory
  • Hybrid Graphics Support
  • UVD
  • HyperTransport 3.0
  • PCI Express 2.0
  • Multiple Display
  • Display Cache

SB700 Features

  • A-Link Xpress II interface
  • 12 USB 2.0 ports and 2 USB 1.1 Ports
  • SATA II AHCI Controller
  • HyperFlash
  • High Definition Audio Controller
  • Power Management
  • IDE Controller
  • SMBus Controller

AMD decided to use a new North Bridge with the AMD 780G chipset, the 780G. This is AMD's first DirectX 10 integrated graphics platform and they take many of the features of the bigger brothers the HD2900XT and port them to the integrated side of the graphics core. The 3200 series supports Microsoft's DirectX 10.0 features including Pixel Shader 4.0 and Vertex Shader 4.0. DirectX 10 games have reached the marketplace, with beautiful graphics like Crysis and others.

AMD 780G Chipset / AMD Athlon X2 4850e Platform Review North Bridge

North Bridge

AMD 780G Chipset / AMD Athlon X2 4850e Platform Review Capacitors


The integrated graphics has a core clock speed of 500MHz and a memory clock speed of 400MHz. The HD3200 has four pixel pipelines meaning that the graphics core has a fill rate of about 2 Gigapixels a second and a memory bandwidth of 6.4GB/second for the HyperMemory. The graphics core and memory bandwidth is comparable in many ways to the HD3470 card that will be used in Hybrid testing a little later in the review.

Hybrid Graphics is ATI's trademark for the blending of an integrated graphics chipset and a discrete graphics chipset to offer higher performance than either by itself. The technology builds upon Crossfire and enabling it in the drivers is a matter of installing the Catalyst drivers off ATI's website and enabling Crossfire. As the feature set of the HD3200 and the HD3XXX series are nearly identical it should work flawlessly.

AMD 780G Chipset / AMD Athlon X2 4850e Platform Review 24-pin power

24-pin power

AMD 780G Chipset / AMD Athlon X2 4850e Platform Review more capacitors

more capacitors

HyperTransport 3.0 is the latest iteration of the HyperTransport standard. HT is the protocol used by AMD on their R780G chipset to provide memory bandwith between the The third iteration of the HT protocol offers up to 41.6GB/second of aggregate memory bandwith between the chipset and the memory.

PCI Express 2.0 is the replacement for the PCI Express 1.1 standard. This standard offers up to 5 Gigabits of bandwidth to an add-on device from the chipset per lane. Each PCI Express slot can have up to 32 lanes, meaning that an x32 slot can transfer up to 16GB/second in each direction. Intel released the first PCI Express 2.0 chipset last year with the X38 and AMD followed with the 790FX chipset as their first one to support the standard.

The 780G series chipset is the first motherboard chipset to support up to 4 independent displays at the same time with the installation of a discrete graphics card. ATI calls this feature Multiple Display Display Cache. The ability to run four monitors is one first introduced into modern video cards by Matrox with their MMS card, but few cards today can do so.

AMD 780G Chipset / AMD Athlon X2 4850e Platform Review SATA ports

SATA ports

The 780G chipset uses the SB700 South Bridge. This is the replacement for the SB 600 that has been around it seems like forever. One key new feature of the SB700 is the ability to support up to 12 USB 2.0 ports and 2 USB 1.1 ports. USB devices are prevalent especially with the introduction of 480Mbps USB 2.0 which increased the bandwidth available to USB.

AMD 780G Chipset / AMD Athlon X2 4850e Platform Review USB ports

USB ports

AMD 780G Chipset / AMD Athlon X2 4850e Platform Review Rear I/O

Rear I/O

GIGABYTE's motherboard comes equipped with six SATA ports, the maximum that the SB700 supports. Four USB 2.0 devices are on the board's I/O with four headers for the rest of the devices supported by the South Bridge. The rear I/O of the board includes a PS/2 mouse and PS/2 keyboard port, a D-Sub port, a DVI port, a HDMI port, S/PDIF out port, 4 USB 2.0 ports, a ESATA port, a Firewire port, six jacks for the onboard audio and a RJ-45 jack for the Gigabit LAN.