Pentium 4 still has bugs
The Pentium 4 is not yet free of all bugs. A bug that already forced Intel to postpone the sales launch of the Pentium 4 by a month has still not been fixed.
This is a bug in the 850/Tehama chipset for the Pentium 4 which can lead to a loss of performance if a graphics card is operated via the PCI slot. Above all, problems should arise if a graphics card is operated via the PCI slot that supplies two monitors. At the moment, computer manufacturers are simply circumventing the bug by using the Matrox G450 via the AGP port and thus both monitors are supplied via the AGP port. However, those who later want to upgrade with a PCI graphics card could have bigger problems.