As of V4 everything was unified into one board, except the power supply.
One of them includes the old EE and GS chips, and the other contains the newer unified EE+GS chip, otherwise being identical.
Many analysts predicted a close 3-way matchup between the PS2 and its soon-to-be-released competitors Microsoft Xbox and Nintendo GameCube, noting that the PS2's graphics were inferior but that it had the advantage of a head start, and had a wide assortment of games of every genre (Xbox's strength was in its hardware; GameCube was the cheapest of the 3 consoles).
The PS2 hardware can read both compact discs and DVDs.
For some consumers this is in fact a limitation, especially for the fans of titles such as Final Fantasy XI, which requires the use of this peripheral, and prevents the use of the official PS2 Linux kit.
In September of that year, in time for the launch of Grand Theft Auto: San Andreas (the best-selling game during the 2004 Holiday season), Sony revealed a new, smaller PS2 (see Hardware revisions).
Sony has also made a PVR/DVD burning consumer device that plays PlayStation 2 games called the PSX.
A product named HD Connect can be soldered into the unit giving hard drive support though.
Although Sony placed little emphasis on online gaming during its first year, all that changed because of the launch of the online-capable Xbox.
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For some consumers this is in fact a limitation, especially for the fans of titles such as Final Fantasy XI, which requires the use of this peripheral, and prevents the use of the official PS2 Linux kit.
However the New Slim Silver Models have more issues with playing PlayStation games than the first PS2 revisions.
It also has a different lens and some compatibility issues documented by Sony for earlier PS2 games.
The PS2 launch seemed unimpressive and gaffe-prone, compared to the well-planned launch of the Sega Dreamcast, which was making a genuine attempt to woo developers and which had better launch titles.
This led to further shortages, and the issue was compounded in Britain when a Russian oil tanker became stuck in the Suez Canal, blocking a ship from China carrying PS2s bound for the UK.
When the PlayStation 2 launched in Japan in March 2000, Sony sold 980,000 units over the opening weekend.
