DS sales topped one million units in the US during April, driven by the release of the DSi early in the month.

Nintendo’s handheld hit 1.04 million sales, achieving greater unit sales than all of the other gaming platforms combined.

Despite the success of the portable, which accounted for 31 percent of the month’s total industry unit sales, monthly hardware revenues fell eight percent to $391.63 million.

Wii sales fell declined by more than 50 percent year on year, to 340,000 units, while PS2 sales rose to 172,000 units following a recent 30 percent price cut.

PS2’s total was just 3,000 units behind Microsoft’s Xbox 360, and comfortably ahead of PS3 and PSP sales, which totaled 127,000 units and 116,000 units respectively.

"Compared to March 2009, the PS2 sales rate almost doubled when comparing the two months on a same-week basis,” said NPD analyst Anita Frazier. “This is a testament to the impact a price reduction can have on hardware acquisition, with price being only second to compelling new content as a catalyst for hardware sales.

"Overall weakness in hardware sales other than the DS and PS2 platforms is likely to capture a lot of attention this month, particularly year over year decline of Wii sales,” she added. “It is important to remember that last April, Wii hardware sales were fuelled by two huge new titles: Super Smash Bros. Brawl and Mario Kart. Taking that into account, Wii unit sales are still very strong and only followed the DS this month in terms dollar and unit sales contribution to total industry sales."

DS – 1,040,000
Wii – 340,000
Xbox 360 – 175,000
PS2 – 172,000
PS3 – 127,000
PSP – 116,000

March hardware sales data can be found here.