Я тут подключил SSD 64 Gb SATA-II 300 Kingston SSDNow V+ Series <SNVP325-S2B/64GB> через SATA3 в режиме ahci, то получил снижение скорости. Вот
тут результаты диска нового. Для наглядности скопировал в один пост
новый -----------------------------------------------------------------------
CrystalDiskMark 3.0 (C) 2007-2010 hiyohiyo
Crystal Dew World :
http://crystalmark.info/ -----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 230.855 MB/s
Sequential Write : 148.460 MB/s
Random Read 512KB : 205.945 MB/s
Random Write 512KB : 132.078 MB/s
Random Read 4KB (QD=1) : 17.765 MB/s [ 4337.3 IOPS]
Random Write 4KB (QD=1) : 38.254 MB/s [ 9339.4 IOPS]
Random Read 4KB (QD=32) : 17.780 MB/s [ 4340.8 IOPS]
Random Write 4KB (QD=32) : 46.370 MB/s [ 11320.9 IOPS]
Test : 100 MB [C: 44.9% (26.7/59.5 GB)] (x3)
Date : 2010/10/02 11:36:09 OS : Windows 7 Enterprise Edition [6.1 Build 7600] (x86)
SATA3+ahci -----------------------------------------------------------------------
CrystalDiskMark 3.0 (C) 2007-2010 hiyohiyo
Crystal Dew World :
http://crystalmark.info/ -----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 182.275 MB/s
Sequential Write : 102.257 MB/s
Random Read 512KB : 172.670 MB/s
Random Write 512KB : 102.225 MB/s
Random Read 4KB (QD=1) : 16.040 MB/s [ 3916.1 IOPS]
Random Write 4KB (QD=1) : 22.082 MB/s [ 5391.2 IOPS]
Random Read 4KB (QD=32) : 14.727 MB/s [ 3595.3 IOPS]
Random Write 4KB (QD=32) : 25.117 MB/s [ 6132.1 IOPS]
Test : 100 MB [C: 36.0% (21.5/59.5 GB)] (x5)
Date : 2011/02/04 10:46:25 OS : Windows 7 Enterprise Edition SP1 [6.1 Build 7601] (x86)
Как видно - 20 - 30 % Или это уже не от портов зависит, а от того что диск "устал". Сейчас попробую откатиться
SATA2+ahci -----------------------------------------------------------------------
CrystalDiskMark 3.0 (C) 2007-2010 hiyohiyo
Crystal Dew World :
http://crystalmark.info/ -----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 225.986 MB/s
Sequential Write : 105.249 MB/s
Random Read 512KB : 204.685 MB/s
Random Write 512KB : 128.248 MB/s
Random Read 4KB (QD=1) : 18.942 MB/s [ 4624.6 IOPS]
Random Write 4KB (QD=1) : 31.835 MB/s [ 7772.3 IOPS]
Random Read 4KB (QD=32) : 21.288 MB/s [ 5197.3 IOPS]
Random Write 4KB (QD=32) : 40.866 MB/s [ 9977.2 IOPS]
Test : 100 MB [C: 36.0% (21.5/59.5 GB)] (x5)
Date : 2011/02/04 11:09:05
OS : Windows 7 Enterprise Edition SP1 [6.1 Build 7601] (x86)
SATA2+IDE -----------------------------------------------------------------------
CrystalDiskMark 3.0 (C) 2007-2010 hiyohiyo
Crystal Dew World :
http://crystalmark.info/ -----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 219.792 MB/s
Sequential Write : 94.747 MB/s
Random Read 512KB : 197.252 MB/s
Random Write 512KB : 124.497 MB/s
Random Read 4KB (QD=1) : 17.243 MB/s [ 4209.8 IOPS]
Random Write 4KB (QD=1) : 21.770 MB/s [ 5314.9 IOPS]
Random Read 4KB (QD=32) : 13.114 MB/s [ 3201.7 IOPS]
Random Write 4KB (QD=32) : 26.720 MB/s [ 6523.4 IOPS]
Test : 100 MB [C: 36.1% (21.5/59.5 GB)] (x5)
Date : 2011/02/04 11:23:29
OS : Windows 7 Enterprise Edition SP1 [6.1 Build 7601] (x86)