AA1 150 with SLC SSD,but poor performance?

Just got a 64GB SLC SSD yesterday. And I replace it with origional 120GB HDD.
Everything is smooth and booting time seems to decreased. But when I ran HDTune.
The result was poor.

The 64GB SLC SSD is based on JMF602 controller. The reading is 160MB/S and writing
is 140MB. But my HDTunes result only show 110MB/S reading and 90MB/S writing.

Is there anything I should adjust in the BIOS or windows setting?

p.s I've disable windows XP prefetch and disk index. But no help at all.

 

Usually those speeds are best possible circumstances. The numbers can vary when in actual use. My Sandisk SDHC 4gb card says 15mb/sec. But I get around 12MB/sec read/write.

I'll run HDTune on it and see what I get compared to the rating.

If you said the system is running well, then I don't think your drive is running underspeed.

 

Hmm, I seem to be proven wrong. My SDHC Card average 20mb/sec under the benchmark tab. Vista for ya

Hopefully someone else understands whats going on here. I'm still leaving towards it just being topped out. The Aspire's disk interface (SATA or IDE, I don't know, never had mine open) might not be able to read at 160 and write at 140.

 

That looks probably about normal. Looks like an I/O issue with the SATA controller on the board.
Put it in another desktop system with 3.0GB SATA and see the results, I'm sure you'll see higher rates.

 

Thanx for your reply.

I'm sure that Aspire one 150 got SATA interface since the origional HDD is SATA interface.
The odd thing is that the booting options shows IDE1 and IDE2 devices instead of SATA device..

 

I've tested this 64GB SLC SSD on the desktop with SATA II interface. The result is nearly 160MB/140MB
(read/write)

If 110MB/S read is the limitation of Aspire one. I will be very disappointed.

p.s I remember I've saw a reading speed of 140MB/S on someone's Aspireone 150 with the same JMF602 controller SSD(but his SSD is MLC)

 

First of all, the chipset in AAO is from a couple years ago thus I believe the SATA is interface is the SATA 150 standard. Also, acer disabled ahci thus reduces the performance of SATA device by a bit. ( i think)

From the result you posted, the SSD speed seems to be limited by the SATA controller thus you're seeing the full potential of the SSD.

 

Your transfer times are very good (about the same as a 7200 rpm HD) even if not up to the full SSD specifications. You will have perceptible faster performance because the access times on SSD are much faster than a hard drive. Did the drive cost more than the AA1?

 

Your screenshot shows ATTO results, not HD Tune. In my experience ATTO can sometimes be inaccurate.

HD Tune Pro benchmark would probably be more accurate, but it is difficult to do the write benchmark if this is your boot drive.

Even so, 110/90 is pretty good performance. I would be more than happy if my desktop HD drive performed like this.

 

Just buy the newest 500GB or 1TB hdd and the performance will be about 110/90. 110/90 isn't exactly stellar performance and my desktop hdd can easily achieve those values.

The stock 160GB hdd in AAO is about 65-70/55-60MBP with burst rate read of more than 115MBPS. The HDD in AAO is sort of underperforming because AAO doesn't have ahci enabled thus no NCQ.

 

Not with sub 1ms access times though And that's not 110MB/Sec sustained full across the disk either.