What was the DRAM type of an SM Count of 6?
CREATE TABLE "table1_26040604_1" (
  "model" text,
  "launch" text,
  "code_name" text,
  "transistors_million" real,
  "die_size_mm_2" real,
  "bus_interface" text,
  "memory_mb" text,
  "sm_count" real,
  "core_config_1_3" text,
  "core_m_hz" real,
  "shader_m_hz" real,
  "memory_m_hz" text,
  "pixel_gp_s" text,
  "texture_gt_s" text,
  "bandwidth_gb_s" text,
  "dram_type" text,
  "bus_width_bit" real,
  "gflops_fma_2" text,
  "tdp_watts" real,
  "release_price_usd" text
);
SELECT "dram_type" FROM "table1_26040604_1" WHERE "sm_count"=6;