When the socket is bga956 and processor is penryn-3m, what is the tdp?
CREATE TABLE "variants" (
  "processor" text,
  "brand_name" text,
  "model_list" text,
  "cores" real,
  "l2_cache" text,
  "socket" text,
  "tdp" text
);
SELECT "tdp" FROM "variants" WHERE "socket"='BGA956' AND "processor"='Penryn-3M';