Dell d630 graphics card Door event finally met ~

Since June, geforce 8 M series laptop graphics cards have been running abnormally around the world, including in China. According to the user's feedback, most of the problems occur when the video card temperature is too high. When a simple program (such as surfing the internet or text processing) is in standby mode, the temperature of the problematic video card is about 60 degrees, which is higher than the normal temperature by more than 10 degrees, the number of game or overclock exceeds 70 degrees. The high fever of the video card is the result of the display failure. Typical symptoms include multiple images, random characters, vertical and horizontal lines, and even no video signal.

In early July, NVIDIA finally admitted that some laptop chips had problems. The fact that g84/86 of the mobile version has defects is officially confirmed. At the end of July, NVIDIA again released a special report, saying that there was indeed a problem with the "shipped notebook products. It is reported that there are nearly 10 models of the detected problematic video card, among them, the most reflected failure video cards include 8600 M Gs, 8600 m gt, 8700 m gt, 8400 M Gs, 8400 m g, and 8400 m gt.

Root cause of failure: unbalanced thermal expansion coefficient

There are indications that similar problems may occur in the geforce 8 M series graphics card, which may be rooted in the packaging technology of the graphics card. According to reports from a number of evaluation agencies, because the coefficient of thermal expansion of the adhesive material is different from that of other components of the video card, the displacement of different components is prone to dislocation when the temperature of the card body changes. Long-lasting accumulation will naturally affect the quality and life of the video card, and thus display the intermittent fault.

NVIDIA's statement also implicitly confirms this point of view. NVIDIA said that the fault with the faulty chip was caused by the use of a "different from the usual wrong bonding process.

As we all know, because of the high energy-saving demands of laptops and the power consumption of graphics cards, mainstream laptops currently adopt dynamic adjustment of the power consumption of graphics cards, matching applications with different intensity, to save power. This leads to frequent hot and cold laptop graphics cards. However, the power-saving design of the PC is much weaker, and the use environment of the PC is also better than that of the notebook. These factors determine that the temperature of the desktop graphics card is much more constant than that of the notebook graphics card.

It is not hard to see that the so-called geforce 8 m problem is not a design defect of the GPU itself. The culprit is the "Temperature Difference ". It also seems that NVIDIA is sure that Desktop products will not be involved in the confidence base.

Solution: Update BIOS to control temperature fluctuations temporarily

Since the cause of the failure has been found, the problem can be solved directly: take measures to control the temperature change of the video card. Dell has just released the BIOS update program for a laptop that uses the geforce 8 M series graphics card. It covers five series of ten products, including the "moving", "latitude", "precision", "vostro", and "XPS. The new BIOS will upgrade the fan Configuration Attribute to improve the temperature fluctuation of the video card core. For users who use a DELL notebook, updating the BIOS may prevent unexpected problems.
Before that, NVIDIA has released a patch to help the laptop control overheating. Therefore, after Dell, we expect more notebook manufacturers to release similar upgrade announcements, so that notebook users can pay close attention to them. Even if the vendor has not released a patch for the moment, it can block the independent graphics card as a balance. If the laptop manufacturer cannot solve the problem, contact NVIDIA. NVIDIA has allocated $0.15 billion to $0.2 billion "Special Funds" for replacement and warranty of defective products.
Only the old g84/86-m models are involved, and there is a low chance of failure in new purchases.

[It should be pointed out that, despite the hype of the geforce 8 m video card issue, the affected users are limited and the exaggerated amount of water is mostly. Most users are not familiar with the Internet. ]

In addition, the geforce 8 m graphics card has been used for laptops for two years, and the problematic geforce 8 m graphics card is mostly old, and is a "batch ". As a matter of fact, NVIDIA has released 14 9 Series Mobile GPUs. The upgrade intention is obvious, and the 8 series are getting farther away. NVIDIA also understands that there are only a small portion of laptops infected. In the future, NVIDIA chips will "secure" such phenomena. For users who purchase new laptops, the chance to buy a wrong geforce 8 m notebook is actually very small.

The core code is g84 (8600 M Gt) g86 (8600 m gs 8400m full series) and the corresponding professional laptop graphics card nvs140m, etc, due to frequent fluctuations in the core temperature, the expansion ratio of the GPU internal adhesive material is different from that of other materials during thermal expansion and contraction. as a result, the GPU will become somewhat loose every time it passes through a cold or hot alternate, and will eventually be decommissioned.

Dell's after-sales service is still good. You can call us to repair the service. We will send someone to repair the service in the next business day. In fact, you can change the motherboard directly. 10 minutes. Although the motherboard may not be new, there should be no more problems with the video card.