Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review :: Card

05-04-2009 · Category: Hardware - Video Cards

By Doc Overclock

Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review Card

Card

Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review Cooling fan

Cooling fan

Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review Heatsink

Heatsink

Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review Rear of PCB

Rear of PCB


Gigabyte has outfitted their reference card with a 2-slot cooler that covers the front of the PCB where the GPU is located. There is a 9 fin fan that cools the heatsink covering the graphics chip. An ATI logo is present as well as the Radeon logo. Gigabyte's logo is located on the fan. Capacitors and circuits lie on the right hand side of the heatsink. The fan power connector is located on the top of the PCB next to the 6-pin power connector.


Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review PCI Express 2.0

PCI Express 2.0

Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review Capacitors

Capacitors

Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review Front of card

Front of card

Gigabyte GV-R477D5-512H-B Radeon HD 4770 Review IO

IO


PCI Express 2.0 provides up to 75W of power to a video card. As the HD 4770 requires 80W of power, a 6-pin power connector is required and present on the card to provide the extra power. ATI has utilized the lower power requirements of the 40nm process to clock this card to 750MHz instead of the 575MHz the HD 4830 is clocked at. The top of the card has two Crossfire bridges that are required to run two or more video cards in Crossfire mode.

The rear of the PCB has the Part Number sticker and the mounting bracket for the graphics chip. The chip itself is a small about 136mm2. This is about half the die size of the Radeon HD 4890 RV790 core and even smaller than the die size of the GeForce GTX285 which is 576mm2. The I/O area of the card has two DVI-I ports, and a 7-pin HDTV port. The Dual-Link DVI ports can output to HDMI ports with an adapter or D-sub via adapter. This setup has been around for years.