So far, I'm not consider Hitachi because it is hot. I don't have good impression with Seagate even the one in my office is Seagate. So, I go for Western Digital. My friend told me about their Caviar series and said "Go for Blue, not for Green".
The max capacity of Western Digital Caviar Blue is 1TB. It is only a double of my current drive. I'm thinking to get more than just a double. But... following is their product chart (3.5", minimum 1TB, SATA interface)
|WD Caviar Black|
|WD2002FAEX||SATA 6 Gb/s||7200||2 TB||64 MB|
|WD1502FAEX||SATA 6 Gb/s||7200||1.5 TB||64 MB|
|WD1002FAEX||SATA 6 Gb/s||7200||1 TB||64 MB||$603|
|WD2001FASS||SATA 3 Gb/s||7200||2 TB||64 MB||$1260|
|WD1001FALS||SATA 3 Gb/s||7200||1 TB||32 MB||$652|
|WD Caviar Blue|
|WD10EALX||SATA 6 Gb/s||7200||1 TB||32 MB|
|WD10EALS||SATA 3 Gb/s||7200||1 TB||32 MB||$415|
|WD Caviar Green|
|WD30EZRSDTL||SATA 3 Gb/s||IntelliPower||3 TB||64 MB||$1890|
|WD25EZRSDTL||SATA 3 Gb/s||IntelliPower||2.5 TB||64 MB|
|WD20EARS||SATA 3 Gb/s||IntelliPower||2 TB||64 MB||$662|
|WD15EARS||SATA 3 Gb/s||IntelliPower||1.5 TB||64 MB|
|WD10EARS||SATA 3 Gb/s||IntelliPower||1 TB||64 MB|
|WD20EADS||SATA 3 Gb/s||IntelliPower||2 TB||32 MB|
|WD15EADS||SATA 3 Gb/s||IntelliPower||1.5 TB||32 MB||$735|
|WD10EADS||SATA 3 Gb/s||IntelliPower||1 TB||32 MB||$420|
There are questions asking why choose the Caviar Green. Here is one of the reviews (in Chinese) : 給我一個選綠盤的理由?西數黑藍綠盤對決.
Looking at the review, Caviar Blue is great choice. However, they don't offer 2TB version (yet?). So, I may either go for Caviar Black or Caviar Green.
iMac (late 2006)
Core2Duo 2.16GHz, 4MB L2 Cache
DDR2 667MHz 2GB + 1GB (non dual-channel)
SATA 1.5Gbps link
Considering my iMac is that old, there maybe no differences between Caviar Blue and Caviar Green. The bottleneck falls into the onboard SATA controller.
So, shall I go for Caviar Green because I can store more data on iMac, without connecting a lot external drive? Or, shall I get Caviar Blue so that the iMac run faster? I may also get another DDR2 2GB so that the computer runs dual channel, which should be 8-10% performance boost.