NVIDIA Corporation (NDAQ: NVDA) shares tumbled today after the graphics processor maker warned that its second quarter may suffer. Shares plunged more than 30 percent after the company issued revenue and gross margin warnings and blamed the problems on weak demand, delayed production of new products and price cuts. The news comes ahead of its quarterly earnings along with that of many other companies operating in the sector.

NVIDIA said that it now expects its second quarter revenues to range between $875 million and $950 million with gross margins also expected to be lower than internal expectations. This compares to a prior revenue forecast of $1.01 billion by analysts. The company also said that it would take a charge of $150 million to $200 million in the second quarter to cover anticipated warranty, repair, and return costs associated with a defect on some of its chips.

Shares of NVIDIA rival Advanced Micro Devices, which owns ATI, fell 3.7 percent on the forecast. Others weren't safe either as the Philadelphia semiconductor index fell as much as 2.7 percent in early trading before recovering to trade down just 0.5 percent right now. The industry as a whole has been experiencing problems as consumer spending has weakened - particularly on high-end computers and graphics cards needed for gaming and graphics design purposes.

Shares of NVIDIA Corporation fell $5.52, or 30.12%, to $12.60 per share on the news.

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