AAPL Stock: 118.03 ( -0.85 )

Printed from

NVIDIA: MacBook Pro GPU material not faulty

updated 06:55 am EST, Tue December 16, 2008

NVIDIA explains lead-bumps

Owners of the latest generation of MacBook Pros may not face the same defects in the NVIDIA GeForce 9600M chip that were prevalent in past models. The Tech Report has found that the Inquirer missed a small but important detail. The high-lead bumps used in the GPU silicon and substrate are present in the new MacBook Pros; however, NVIDIA claims there is nothing inherently wrong with the bumps themselves, and that they are used throughout the industry without problems. NVIDIA claims the problems with recent chip failures were due to a combination of errors, not specifically the lead bumps.

In a CNET chat, NVIDIA argued that the Inquirer believed the lead-bumps were the key issue at fault.

"A more robust underfill would have taken the stress off the bumps and kept that (original problem) from happening," NVIDIA VP Michael Hara says. "What we did was, we just simply went to a more robust underfill. Stopped using that (previous) underfill, kept using high-lead bumps, but we changed the underfill. And now we don't see the problem."

The new material set that NVIDIA claims has rectified the issues with past cards appears to refer to the new underfill, and the use of high-lead bumps, which the Inquirer keyed on, is allegedly a non-issue. The company needs the issues to be resolved as it recently posted a large loss due to the previous defects in its mobile and likely desktop chipsets.

by MacNN Staff



  1. Jimmyadams12

    Joined: Dec 1969



    I am a teacher in reputed university.This is your nice post.Now people will learn from your this post in good way.Thanks to share the knowledge.

Login Here

Not a member of the MacNN forums? Register now for free.


Network Headlines

Follow us on Facebook


Most Popular


Recent Reviews

Ultimate Ears Megaboom Bluetooth Speaker

Ultimate Ears (now owned by Logitech) has found great success in the marketplace with its "Boom" series of Bluetooth speakers, a mod ...

Kinivo URBN Premium Bluetooth Headphones

We love music, and we're willing to bet that you do, too. If you're like us, you probably spend a good portion of your time wearing ...

Jamstik+ MIDI Controller

For a long time the MIDI world has been dominated by keyboard-inspired controllers. Times are changing however, and we are slowly star ...


Most Commented