The 5 inch Dell Streak, an oversized smartphone pretending to be a tablet, is now officially dead as the computer maker puts its money on larger tablets that can better rival Apple’s popular iPad.

Dell bid “Goodbye” to the Streak 5 on its website this week, saying “It’s been a great ride.” But in reality, the tablet was short of Dell’s best effort to rival the iPad.

Dell is now banking on 7 and 10 inch tablets, much closer to the form factor of the market leader.

When it was launched in August 2010, the Dell Streak 5 had a few birth defects: its 5 inch screen was only slightly larger than that of the Droid X smartphone, and the resolution was lower than iPhone 4's 3.5 inch Retina display. The Streak also came with a then-year-old version of Google Android OS (1.6), when the current version at the time was 2.2.

The Streak 5 also had a pricing problem, as when it launched it was more expensive than the original iPad.

Reviewers didn’t think much of the Streak 5 either. All Things D’s Walt Mossberg and Kara Swisher ridiculed the Dell Streak. Swisher said "the most likely use for the device was as something to eat."

Dell has not abandoned the fight against the iPad. CEO Michael Dell is bullish on Android tablets, and predicts Android tablets will one day overtake the iPad, just like what happened in the smartphone arena. Dell has now moved on with the Dell Streak 7, a 7 inch tablet with an aggressive price point, but plagued with a poor display and buggy software.

The 10 inch form factor is also on Dell’s agenda, as the company launched its newest Android tablet exclusively in China this week. The tablet is called the Streak 10 Pro, uses a 1Ghz Nvidia Tegra 2 dual-core processor that runs the Android 3.1 operating system.