Name the number of v core for model number mobile athlon 64 3000+
CREATE TABLE "claw_hammer_c0_cg_130_nm_desktop_replace" (
  "model_number" text,
  "frequency" text,
  "l2_cache" text,
  "ht" text,
  "mult_1" text,
  "v_core" text,
  "tdp" text,
  "socket" text,
  "release_date" text,
  "part_number_s" text
);
SELECT COUNT("v_core") FROM "claw_hammer_c0_cg_130_nm_desktop_replace" WHERE "model_number"='Mobile Athlon 64 3000+';