AMD Releases Two New HD4800 Series 40nm Mobile GPU's

March 3, 2009 by John Messina weblog
ATI Mobility Radeon HD4860

(PhysOrg.com) -- AMD announced today, two new ATI Mobility Radeon HD4800 series mobile GPU's. The HD4830 and HD4860 are both built on ATI's 40nm process technology and both support DDR3, GDDR3 and GDDR5 memory, with the GDDR5's memory doubled over the GDDR3. GPU's performance is nearly doubled from 432 Gflops in the 4600 series to 832 Gflops for the 4800 series GPU's.

ATI PowerExpress and ATI Switchable Graphics Technology are used to power down the GPU when it's not in use. Advanced clock gating, which exist in three modes, and GPU activity monitor extend the power saving features by the ability to utilize a separate, built-in graphics processor of much lower power consumption and processing ability. Switching between the integrated graphics processor and ATI Radeon HD can be done without rebooting but is not initiated automatically.

The GDDR3 would target mainstream applications, while the GDDR5 would target the high end due to its increase in memory bandwidth from the standard GDDR3 and 64 GB/s. Memory bandwidth is somewhat crippled as compared to the chip's potential. This is due to a 128 bit bus which is down from 256 in Mobility 4800-series; however faster core clock slightly compensates for this while providing additional power savings.

There are several 40nm ATI Mobility Radeon HD win updates for the 4860 and 4830 that include the ASUS N81Vp, N51Tp and W90. MSI's GT727 will upgrade from 4850 and Toshiba's Satellite 300 upgrade 4650. AMD will be announcing additional partners at the CeBIT.

© 2009 PhysOrg.com

3.8 /5 (6 votes)  

Rank 3.8 /5 (6 votes)
Relevant PhysicsForums posts
  • Need help reading 3-D
    created18 hours ago
  • A way to send and receive wireless data
    createdFeb 11, 2012
  • Calling function with no input argument
    createdFeb 10, 2012
  • Force free body diagram problem on gym equipment
    createdFeb 10, 2012
  • Empirical data regarding shower heads and water
    createdFeb 10, 2012
  • feed hold button on CNC lathe
    createdFeb 09, 2012
  • More from Physics Forums - General Engineering

More news stories

Japan scientist makes 'Avatar' robot

A Japanese-developed robot that mimics the movements of its human controller is bringing the Hollywood blockbuster "Avatar" one step closer to reality.

Electronics / Robotics

created Feb 10, 2012 | popularity 5 / 5 (8) | comments 13

Intel packs performance and reliability into its latest SSD 520 series

Intel Corporation announced today its fastest, most robust client/consumer solid-state drive (SSD) to date, the Intel Solid-State Drive 520 Series (Intel SSD 520), a 6 gigabit-per-second (gbps) SATA III SSD ...

Electronics / Hardware

created Feb 07, 2012 | popularity 5 / 5 (1) | comments 4

Google rumored to have built Heads-Up-Display glasses prototype

(PhysOrg.com) -- 9to5Google is reporting that they have received a tip from someone they believe to be a reliable source saying that Google is working on a Heads-Up-Display (HUD) pair of eye-glasses. The per ...

Electronics / Consumer & Gadgets

created Feb 08, 2012 | popularity 4.3 / 5 (9) | comments 2 | with audio podcast weblog

New Kindle Touch is an impressive e-reader

When it comes to reading digital books, tablets are all the rage. But there's a lot to like about simple e-readers, which over the past year have become both a lot cheaper and a lot less clunky.

Electronics / Consumer & Gadgets

created Feb 09, 2012 | popularity 5 / 5 (4) | comments 1

Apple to debut 'iPad 3' in March: report

Apple will unveil a new version of its market-ruling iPad table computer in March, according to a report in Dow Jones-owned technology blog All Things D.

Electronics / Consumer & Gadgets

created Feb 09, 2012 | popularity 1.9 / 5 (21) | comments 0


Scientists discover molecular secrets of 2,000-year-old Chinese herbal remedy

For roughly two thousand years, Chinese herbalists have treated Malaria using a root extract, commonly known as Chang Shan, from a type of hydrangea that grows in Tibet and Nepal. More recent studies suggest that halofuginone, ...

New method to examine batteries -- MRI from the inside

There is an ever-increasing need for advanced batteries for portable electronics, such as phones, cameras, and music players, but also to power electric vehicles and to facilitate the distribution and storage of energy derived ...

A mitosis mystery solved: How chromosomes align perfectly in a dividing cell

Although the process of mitotic cell division has been studied intensely for more than 50 years, Whitehead Institute researchers have only now solved the mystery of how cells correctly align their chromosomes during symmetric ...

Starve a virus, feed a cure? Findings show how some cells protect themselves against HIV

A protein that protects some of our immune cells from the most common and virulent form of HIV works by starving the virus of the molecular building blocks that it needs to replicate, according to research published online ...

Researchers find extensive RNA editing in human transcriptome

In a new study published online in Nature Biotechnology, researchers from BGI, the world's largest genomics organization, reported the evidence of extensive RNA editing in a human cell line by analysis of RNA-seq data, demons ...

The proteins ensuring genome protection

Researchers from the University of Geneva (UNIGE), Switzerland, have discovered the crucial role of two proteins in developing a cell 'anti-enzyme shield'. This protection system, which operates at the level of molecular ...