1.Keep your old IDE HDD.
2.Please let your system setup be known,so it's better for people to give apt advises.
3.Buy WDC 1TB green.
3.buy pci-sata card.damage would be 200 bucks or so.
4.your seagate 7200.7(barracuda rite??) is an Ultra ATA 5 (IDE) drive.that's why I said do no.(2) first.
But that doesn't confirm whether your mobo has ATA 5 or ATA 6.ATA 5 has theoretically max transfer rates of 100MBytes per second and ATA 6 have 133 MBytes per second.
Theoretically,you should be able to max out your HDD.
But again,as said by other members,you may encounter some problems with IDE to SATA conversion.and there may be some speed loss.
Usually, pci to sata should offer better speeds,both sustained and burst(burst doesn't matter much in your case).
Importantly,both depend on DMA(direct memory access) in some way or other,so you wouldn't be able to max out either way,considering the 2004-05' ram/config that you have(again do 2)
@virus32win: The older pc on which you checked the ide-sata converter speeds may itself be the bottleneck.could you let us know the other specs of that pc,maybe that are causing such drop in speeds,not necessarily the IDE-to-Sata itself?!!?!??!
Explanation for 2:so,WDC 1TB green 101EADS is the choice for you to go,as it's slower(don't care condition for you)
But should be more reliable.
as for 7200.12 ,you won't be able to reap the speed benefits for sure and if and when you upgrade your system then,you would have better HDD options available then.
comes in two models,two-platter and three-platter.three-platter though slower but would have more shelf life.haah,don't bother much,the ones available almost everywhere in the market are 3platter ones.
5. I would suggest you make your newer HDD,your boot drive.as it is faster.
you would lose data,when your HDD crashes.So better is to backup sensitive data on both drives.so you could use the 160gb as sensitive data backup drive.
6. check the thread where HD tach screenshots are posted,older pages maybe.and you would find the ones similar to your case.and would get to know better what speeds you would get.
7.How could you get warranty till 2011 on your HDD,plus earlier Seagate had only 3years warranty,so it should have been bought in 2008
and still it's IDE

