CrystalDiskMark 3.0.1 
      Benchmark | 
    Source:AS SSD  | 
  
     | 
CrystalDiskMark is a drive benchmark tool which conducts a 
series of Sequential, 512K and 4K read and write tests. 
  
  
    | 
         100MB 
      test
  | 
    
         500MB 
      test
  | 
  
    | 
         1000MB 
      test
  | 
    
         2000MB 
      test
  | 
  
    | 
         4000MB 
      test
  | 
  
  
    
      
        
           | 
          CrystalDiskMark - Crucial M4 256GB 
            SSD |  
        
           | 
          100MB 
            Test  | 
          500MB 
            Test  | 
          1,000MB 
            Test | 
          
             2,000MB 
            Test  | 
          
             4,000MB 
            Test  |  
        
           | 
          Read | 
          Write | 
          Read | 
          Write | 
          Read | 
          Write | 
          Read | 
          Write | 
          Read | 
          Write |  
        
          | Sequential (MB/s) : | 
          482.0 | 
          284.1 | 
          477.9 | 
          281.8 | 
          510.5 | 
          282.3 | 
          504.2 | 
          281.0 | 
          501.4 | 
          270.3 |  
        
          | 512K (MB/s) : | 
          426.1 | 
          287.4 | 
          405.4 | 
          284 | 
          405.2 | 
          285.8 | 
          404.6 | 
          285.2 | 
          393.0 | 
          285.3 |  
        
          | 4K (MB/s) :  | 
          23.25 | 
          75.39 | 
          22.99 | 
          73.25 | 
          22.96 | 
          73.93 | 
          22.97 | 
          73.59 | 
          23.33 | 
          75.2 |  
        
          | 4K QD32 (MB/s) : | 
          190.5 | 
          230.7 | 
          190.7 | 
          230.1 | 
          190.8 | 
          232 | 
          190.8 | 
          230.6 | 
          190.7 | 
          230.1 |    | 
The 256GB Crucial M4 SSD scores 482MB/s in the 
100MB Sequential Read test and 284MB/s in the 100MB sequential Write test of 
CrystalDiskMark. Peak results for this SSD are a Read score of 510.5 MB/s in the 
1000MB Sequential test and Write score of 284.1MB/s in the 100MB sequential 
test. These results are in line with the manufacturer's rated specs.
Next up, AS SSD results... 
  
  
      AS SSD 1.6 Benchmark  | 
    Source:AS SSD  | 
  
     | 
The AS SSD 
benchmark determines the performance of Solid State Drives (SSD). AS SSD 
benchmark is made specifically to test SSD performance. It is a synthetic 
benchmark that gauges bandwidth and latency speeds for solid state disks. Higher 
bandwidth (MB/s) is better, lower latencies (ms) are better.