Saturday, August 30th 2008
NVIDIA Updates Chip Package Materials, 55nm GPUs subject to Changes too
A product change notification (PCN) document by NVIDIA The Inquirer claims to have access to, indicates changes to the bump materials of several NVIDIA graphics processors (GPUs). Affected by this change are popular GPUs such as G92 and G92b (55nm). Changes include replacement of a High-Pb solder (95% Pb / 5% Sn) bump material with Eutectic Solder (63% Sn / 37% Pb). Bumps are those parts of the die that establish electrical contact with the leads/pins of the FC-BGA package. Failures of these bumps are irreparable leading to permanent damage. This follows several events that lead to NVIDIA owning up defects in certain mobile graphics and MCP parts.
Implications of this PCN are:
Implications of this PCN are:
- Current G92 and G92b are weaker and could be subject to failures similar to those products already diagnosed with failing packages and official announcements issued.
- This could just be a precautionary measure by NVIDIA since these changes according to the PCN are aimed "to increase supply and enhance package robustness" according to the PCN. In other words, better safe than sorry.
- Sourcing bump-processing services from a single provider is more economical than several providers doing it, as was the case with the recent mobile GPU failure fiasco. Mobile GPUs aren't much different from regular ones per say.
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EDIT: Ups I thought this post was on the Ati Furmark thread. I had both threads opened at the same time and you had the last post on both IIRC. Anyway it's what I was taling about in that thread. ;)