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Slow SSD write after OS install

Last response: in Storage
June 3, 2011 10:25:50 PM

Benchmarked a new ssd with AS SSD and got the same results as published by reviews: 240MB/s sequential read and 220MB/s sequential write. However, after I copy my image to the drive all the write benchmarks are cut in half: 100MB/s seq. write. Read performance does not change. Is this expected? Can I improve write performance?

It's a Kingston V100 128GB. I copied a 90GB image from my old hdd. Alignment is good, has the latest firmware, tried both msahci and intel's rst driver. I also tried a fresh install of Win7 and got the same slow write perf.


More about : slow ssd write install

a c 143 G Storage
June 3, 2011 10:47:45 PM

How did you test the new drive originally??

When you did a fresh install, did you do a secure erase first before installing?

Can you post a screenshot of your AS SSD Benchmark??
a c 87 G Storage
June 4, 2011 2:35:10 AM

That's strange. You should see if there's a Community spot at the manufacture website that discusses this. If you can't find any details then contact the manufacturer.

Did you update the drive to the latest firmware?
June 4, 2011 3:29:39 AM

Hi, the SSD has the latest firmware. I've never done a secure erase. I've taken the following steps:
1) Fresh Win7 on SSD: slow writes
2) Old image on SSD: slow writes
3) Quick format of SSD: fast writes
4) Put image on again: slow writes

So I know the drive is *capable* of fast writes. Here's my slow benchmark:

When it was fast, it was equal to this benchmark site's numbers:

Kingston gave me an RMA #. But I'm not convined the drive is bad because it did deliver fast write performance once. I'm wondering if this is normal for SSDs?