New SSD has very slow write speed.

I cloned my HDD to a new Kingston SSDnow V100 SSD ($1/GB!!!). This is in a Sony VGN Z. The problem is my write performance is half what other people are reporting. One thing I noticed is AS SSD reports the "offset/alignment" to be "104448 K - OK" in green. The other guy's benchmark says "1024 K - OK". What do those numbers mean? What can I do to improve write performance?



Thanks.

 

Check if your partition is aligned, for example with diskpart -> sel dis n -> lis par.
Does your SATA adapter support SATA II(3 GB)?
Maybe you have to turn LPM off.

 

- I think my partition is aligned. It begins at 104448K and AS SSD says it's ok.
- My computer supports SATA II, and the read speed is 230MB/s.
- My drive doesn't freeze or anything. Bad LPM would effect reads, too.

 

What chipset do you have? On the HM55 and PM55 chipsets they have a throttling issue with ssds. If you have one of these, there are a couple of sets of tweaks you can use to unleash the speed you should be getting, but if it isn't one of these, then this is not the issue, obviously.

 

If you do have one of these, the 2 sets of tweaks are Stanismax tweaks and JBB's tweaks, both can be found here on the Asus thread in the gaming laptop section.

 

I'm wondering if you have smaller geometry NAND (cheaper) that what the reviewers used in their articles...

That does not sound right.

 

I have an Intel GM45/GM47 chipset.

 

If my geometry or alignment were off, would it also affect read speed? Anyway, Kingston support immediately said they'd replace it. I hope the 2nd disk magically resolves the problem.

 

It won't affect the read speed, but it would halve the write speed.