8 Replies Latest reply on Dec 10, 2009 5:21 PM by dbm

    New X25-M G2 only reading at 123 MB/s

    kokoko

      Just got my second X25-M and am surprised to see this sample only reads at 123 MB/s (model SSDSA2M080G2GN, firmware 2CV102G9). Writes are normal at ~ 70 MB/s. System is 2008 Mac Pro, 10.6.2. My first sample reads at >250 MB/s in the same system so I'm assuming the issue is with the X25-M, not the system.

       

      Any advice?

       

      Thanks!

        • 1. Re: New X25-M G2 only reading at 123 MB/s
          glugglug

          Apple limits the SATA to 1.5GHz in the MacBook Pro instead of 3.0GHz, which would limit you to about that 123MB/s.  (Not sure about 2008 Mac Pro), see here: http://www.anandtech.com/mac/showdoc.aspx?i=3672&p=5

           

          Are your 2 drives on SATA ports connected to the same controller, or is one on an NVidia controller and one on a Marvell or something?  Maybe Apple limited some controllers and not others?

          • 2. Re: New X25-M G2 only reading at 123 MB/s
            kokoko

            Thanks for your reply. My system is a Mac Pro tower with 4 x 3.0 GB/s internal SATA II ports.

             

            I did swap the two X25-Ms into the drive bay and tested read speeds to get the 123 MB/s and >250 MB/s results.

            • 3. Re: New X25-M G2 only reading at 123 MB/s
              kokoko

              Just got off the phone with Intel SSD Tech support. They agree it must be the drive, not my system and agree I should just replace it via RAM from the reseller (mwave.com) who are sending me a replacement as a cross shipment.

              • 4. Re: New X25-M G2 only reading at 123 MB/s

                OHH Damn!! - I ordered a X25-M G2 from mwave just last night for my brand new iMac 27" which is definitely SATA II and running at 3Gb/s as compared to any other macs. It'll totally suck if there's a problem with the drive an running at half the speeds after it's installed. We all know that the installation of a HDD/SSD in an iMac is quite cumbersome.    

                • 5. Re: New X25-M G2 only reading at 123 MB/s
                  E1nz

                  This is after a month of use.

                   

                   

                  Results 243.04
                  System Info
                  Xbench Version 1.3
                  System Version 10.6.2 (10C540)
                  Physical RAM 6144 MB
                  Model MacPro3,1
                  Drive Type INTEL SSDSA2M080G2GC
                  Disk Test 243.04
                  Sequential 152.50
                  Uncached Write 139.77      85.82 MB/sec [4K blocks]
                  Uncached Write 83.81        47.42 MB/sec [256K blocks]
                  Uncached Read 198.11      57.98 MB/sec [4K blocks]
                  Uncached Read 477.31      239.89 MB/sec [256K blocks]
                  Random 598.11
                  Uncached Write 683.33       72.34 MB/sec [4K blocks]
                  Uncached Write 253.51        81.16 MB/sec [256K blocks]
                  Uncached Read 2658.48      18.84 MB/sec [4K blocks]
                  Uncached Read 1106.81     205.38 MB/sec [256K blocks]
                  • 6. Re: New X25-M G2 only reading at 123 MB/s
                    legege

                    I have an old MacBookPro 2,2 (late 2006). I've installed my new G2 160GB. Here is my xbench result. Is the 1.5GHz limit affecting me or there is a problem with the drive?

                     

                     

                    System Info

                    Xbench Version 1.3

                    System Version 10.6.2 (10C540)

                    Physical RAM 3072 MB

                    Model MacBookPro2,2

                    Drive Type INTEL SSDSA2M160G2GC

                    Disk Test 221.34

                    Sequential 138.38

                    Uncached Write 145.26    89.19 MB/sec [4K blocks]

                    Uncached Write 147.58    83.50 MB/sec [256K blocks]

                    Uncached Read 89.43    26.17 MB/sec [4K blocks]

                    Uncached Read 246.10    123.69 MB/sec [256K blocks]

                    Random 552.70

                    Uncached Write 673.78    71.33 MB/sec [4K blocks]

                    Uncached Write 275.01    88.04 MB/sec [256K blocks]

                    Uncached Read 1922.58   13.62 MB/sec [4K blocks]

                    Uncached Read 626.27    116.21 MB/sec [256K blocks]

                    • 7. Re: New X25-M G2 only reading at 123 MB/s
                      dbm

                      2006 model is 1.5, not 3.0, so the numbers you are getting look right.

                      • 8. Re: New X25-M G2 only reading at 123 MB/s
                        dbm

                        Here are my stats, 17 inch unibody 2009 Macbook Pro running OSx and Ubuntu. 80 GB split between the two and running for 2 months. 68GB available on OSx Drive.

                        Results    306.80   
                            System Info       
                                Xbench Version        1.3
                                System Version        10.6.2 (10C540)
                                Physical RAM        6144 MB
                                Model        MacBookPro5,2
                                Drive Type        INTEL SSDSA2M160G2GC
                            Disk Test    306.80   
                                Sequential    197.15   
                                    Uncached Write    175.07    107.49 MB/sec [4K blocks]
                                    Uncached Write    161.69    91.48 MB/sec [256K blocks]
                                    Uncached Read    162.45    47.54 MB/sec [4K blocks]
                                    Uncached Read    447.07    224.69 MB/sec [256K blocks]
                                Random    691.29   
                                    Uncached Write    781.78    82.76 MB/sec [4K blocks]
                                    Uncached Write    324.28    103.81 MB/sec [256K blocks]
                                    Uncached Read    2138.16    15.15 MB/sec [4K blocks]
                                    Uncached Read    1046.44    194.17 MB/sec [256K blocks]