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How much does IDE mode limit SSD??

post #1 of 12
Thread Starter 
I'm looking into buying an SSD - I had an eye on the OCZ Vertex 2 60GB......


Becuase I have a G41 mothrboard with an ICH7 controller, it doesn't support AHCI mode.

I know you can run SSD's on both modes but I would like to know how good IDE mode really is.


If you look at this - http://www.ocztechnology.com/ocz-vertex-2-sata-ii-2-5-ssd.html

On the Specifications tab it shows the read/write speed.


Max Read - Up to 280mb/s

Max Write - Up to 275mb/s

Sustained Write - Up to 250mb/s

Random Write 4K (Alligned) - 50,000 IOPS (Input/Output Per Second)



I know this is quite good when compared to my Spinpoint F3 which gets below 100mb/s.....




Question is - What would the performance be on IDE mode....??
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post #2 of 12
One of the important features of AHCI is NCQ. SSDs can process requests faster than HDDs. It can process so fast that the SSD could end up waiting for work. NCQ allows the OS/controller to request up to 32 simutaneous requests at once.

How much of an impact depends on the SSD controller, number of channels, and workload.... so it depends.
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post #3 of 12
Thread Starter 
What does NCQ mean and what does it do??

EDIT: I've just Googled it and it means Native Command Queueing, essentially putting tasks in order to reduce access times.

SSD's don't need this because they can process multiple tasks at once.
Edited by jackblack644 - 1/6/12 at 12:48pm
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post #4 of 12
but they wouldn't be able to process multiple tasks if they couldn't use the NCQ in the first place. Basically, you need AHCI
post #5 of 12
Thread Starter 
You can still use an SSD without AHCI, it won't be as fast - but it's still usable.....

I'm doing a project (Check my Sig Rig) and I'm getting a P67 board and a Crucial M4 64GB SSD!!!!


COOL BEANS!!!
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post #6 of 12
but why get an ssd if your not using it in ahci mode...? You may aswell save the £100 and buy another hard drive?
post #7 of 12
Quote:
Originally Posted by jackblack644 View Post

What does NCQ mean and what does it do??
EDIT: I've just Googled it and it means Native Command Queueing, essentially putting tasks in order to reduce access times.
SSD's don't need this because they can process multiple tasks at once.

NCQ boost SSD speed significantly. Not sure why you don't want it.
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post #8 of 12
Thread Starter 
Umm... If you haven't noticed - the Thailand Floods in mid-2011 means that Hard Drives are in really short supply, so the prices have gone sky high!!!

A 500gb Hard Drive is around £100 now, and a Crucial M4 64GB is £75...


The Cheapest SSD is an OCZ Onyx 32GB - Around £50!!!!!!!
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post #9 of 12
Thread Starter 
Quote:
Originally Posted by trumpet-205 View Post

Quote:
Originally Posted by jackblack644 View Post

What does NCQ mean and what does it do??
EDIT: I've just Googled it and it means Native Command Queueing, essentially putting tasks in order to reduce access times.
SSD's don't need this because they can process multiple tasks at once.

NCQ boost SSD speed significantly. Not sure why you don't want it.

Umm.... It's not that I don't want it.... ICH7 only supports IDE mode, therefore NOT supporting SCQ.....!!!!!!!!
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post #10 of 12
If you don't bother using AHCI then why use an SSD at all, the main reason you buy one is for the speed. I've just seen a 2tb WD HDD for £120 on Overclockers, go buy that if you simply want it for storage.
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