They actually have the same amount of NAND.

However, some companies choose to over-provision to ensure SSD performance.

Basically, even if you have a 256GB SSD... you should never fill it to 256GB. The most you should put on it is around 240-245GB to ensure consistent performance.

 

Quote:

Originally Posted by DuckieHo

Basically, even if you have a 256GB SSD... you should never fill it to 256GB. The most you should put on it is around 240-245GB to ensure consistent performance.

More like 230GB really (I think the general recommendation is 10-25%). Personally, I try to leave 20% free (based on total NAND capacity) so that's around 100GiB formatted capacity per 128GiB NAND.

 

article at bit-tech http://www.bit-tech.net/news/hardware/2012/02/27/lsi-boosts-ssd-capacities/

sean webster has a teriffic thread here http://www.overclock.net/t/1179518/seans-ssd-buyers-guide-information-thread

 

Quote:

Originally Posted by rui-no-onna

More like 230GB really (I think the general recommendation is 10-25%). Personally, I try to leave 20% free (based on total NAND capacity) so that's around 100GiB formatted capacity per 128GiB NAND.

It depends on what you're doing with the drive.

 

Quote:

Originally Posted by soundx98

article at bit-tech http://www.bit-tech.net/news/hardware/2012/02/27/lsi-boosts-ssd-capacities/

sean webster has a teriffic thread here http://www.overclock.net/t/1179518/seans-ssd-buyers-guide-information-thread

Best articles:
http://www.anandtech.com/show/3690/the-impact-of-spare-area-on-sandforce-more-capacity-at-no-performance-loss
http://www.anandtech.com/show/6433/intel-ssd-dc-s3700-200gb-review/3

 

Quote:

Originally Posted by DuckieHo

Best articles:
http://www.anandtech.com/show/3690/the-impact-of-spare-area-on-sandforce-more-capacity-at-no-performance-loss
http://www.anandtech.com/show/6433/intel-ssd-dc-s3700-200gb-review/3

Add this to the list:
http://www.anandtech.com/show/6489/playing-with-op

SandForce is a bit of a special case. Thanks to compression, SF SSDs have more spare area to play with. I reckon if Anand had tested the Intel 330 a while longer, we'd see worse performance degradation as the NAND gets filled up.