我的OWC Mercury Pro 6G 120GB 寫入110MB 讀取180MB

[george741104]

怎麼會跟官網講的差那麼多？

我是裝載2011 early MBP 15"

目前配置是雙硬碟。系統是owc的SSD。
跑出來的速度都快跟我那顆7200轉的資料碟一樣慢了....怎麼會這樣？

是我設定錯誤嘛？ 懇請高手協助。

[吉米丘]

你的機器支援的是SATA3還是SATA2？

[peter3257385]

2011 early有SATAIII
不過你最好看一下你是否“兩個”SATA接口都是SATAIII
我記得有一些是光碟機的SATA接口是維持SATAII...
都正常的話，清一下PRam和NVRam
http://support.apple.com/kb/HT1379?viewlocale=zh_TW

[george741104]

謝謝兩位熱心回答！
我在這邊道個歉，看錯型號了，是OWC Mercury Electra 6G 120GB.

SATA ports 確認都是SATA III 6Gb 沒錯。

也清理過PRAM了。
但是測試結果還是一樣。寫入有時候還會掉到8,90MB/s。

附上我MBA2011 鍵盤背光版的SSD速度測試圖，
都有兩百多的水準。

是我哪裡設定錯了嘛？

而且我MBP的SSD有好多影片格式都不支援，這樣算是正常嘛？

[ViewFinder]

你那速度真的不正常。我的也是 2011MBP 15"（不過我的是 SATA3 + SATA2 )，用的是 OWC Mercury EXTREME Pro 6G SSD (240GB)，速度是 240/420 左右。我覺得你聯絡 OWC 問可能會快些。

至於影片格式不支援，請看它 help pdf 裡第6頁：
Important note about Solid State Disk (SSD) speeds
Some models of SSD cannot save video data at the speed indicated by the manufacturer because the disk uses hidden data compression to reach these higher write speeds. This data compression technique can only save data at the manufacturer’s claimed speed when storing simple files or simple data, such as blank data. Video data includes video noise, and more random pixel data which does not compress much, so the true speed of the disk is seen.
Some SSD’s can have up to 50% lower write speed than the manufacturer’s claimed speed, so even though the disk specifications claim an SSD is fast enough to handle video, in reality the disk is not fast enough for real time video data capture. Hidden data compression mostly affects capture and often these disks can still be used for real time playback.
Use Blackmagic Disk Speed Test to measure accurately if your SSD will be able to handle uncompressed video capture and playback. Blackmagic Disk Speed Test uses data to simulate the storage of video so you get results similar to what you will see when capturing video to a disk. This will let you find models of SSD that work well for video capture. In our testing, we have found larger newer models of SSD, and larger capacity SSD’s are generally faster. Blackmagic Disk Speed Test also tests the speed of disks connected to eSATA docks and other interfaces, which can affect disk performance.

我的也沒完全支援（但沒你的誇張）。

[吉米丘]

120GB跟240GB速度是差很多的

我沒記錯的話，速度要240（256GB）以上的才能出的了全速

之前問是聽說跟顆粒數目有關係，不過不知道後來怎樣了

所以你會看到原廠速度都是用256GB以上的來做

[george741104]

感謝諸位的熱心解答，
我想應該是因為容量不夠大導致的吧。

我在問問看OWC好了。

謝謝你們。

[george741104]

結果今天客服寄給我另外一個軟體，測道的數字是正常的。
同時我也比對了我Air的原廠SSD速度，是250MB/s上下。正常。

我7200轉的500GB傳統硬碟，100MB/s上下。正常。

然後OWC這顆SSD 485MB/s正常。

然後客服說Blackmagic用的是壓縮檔在測試Blablabla~(我其實也不太懂檔案的類別)

所以，狀況算是解除了。
很奇妙結果。

[吉米丘]

那太棒啦

其實，用爽就好啦

我是用AJA為主

[abc134679852]

那請問一下
2010的mini 有光碟機版的有支援SATA3嗎？
拆掉光碟機的位子裝SSD
我也是這顆，不過跑出來更慘，，只有100〜120**