Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28270 ( "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 ( MHz )" real, "Shader ( MHz )" real, "Memory ( MHz )" 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 )

### Question ###
What was the DRAM type of an SM Count of 6?

### Accurate SQL ###

SELECT "DRAM type" FROM table_28270 WHERE "SM count" = '6'