Slow/Odd HDD benchmarks

T

Tomson

Weaksauce
Joined
Nov 19, 2007
Messages
127
Recently noticed HDD's being very slow, I turned off indexing but still seemed very slow.

Then I tried the benches :eek:

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What could be the reason? 1 drive I could understand but both? Anything else that looked to be using disk was closed before doing the tests, only firefox was really using cpu, around 20% and even closed it was virtually the same CPU usuage on the benches.

athlon 3500+, 2gb ram and 2 hdd's on IDE.

I got a wd 1tb caviar 7200rpm 32mb cache on the way to replace the c:\, I was hoping this would make the system disk quicker.
 
Are the drives on the same cable?

Also, it looks like the drives aren't breaking 66MB/sec, meaning it may be running in Ultra DMA mode 4. The drives should run in mode 5, which is a maximum of 100MB/sec. Make sure you have an 80 conductor cable in place, you have set the jumpers correctly, etc. You can determine the current Ultra DMA mode by going to the Advanced Settings tab of the properties page of the primary IDE channel in Device Manager.
 
both ultra dma 5 on different controllers with 'Enable DMA' checked.

I checked toms charts earlier and on there the two drives I have average speed is only 5MB/s more than mine. Just the mine have no consistency (up and down) with very low minimum read speeds especially the c:\ drive (wd200)
 
Tomson said:
both ultra dma 5 on different controllers with 'Enable DMA' checked.

I checked toms charts earlier and on there the two drives I have average speed is only 5MB/s more than mine. Just the mine have no consistency (up and down) with very low minimum read speeds especially the c:\ drive (wd200)
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Any time your OS issues a request to your C: drive, it has to serve it as well as the benchmark, so it's benchmark scores will drop. SilentPCReview disables the SideBar and Indexing on their Vista test setup for this reason.
 
Ok, I got a WD Black,

benchmarked with read speeds of 85, then I did an acronis clone of my c:\ drive onto it and it gave read speeds of 60MBs/ with big drops.

I did an error scan/check thing which fixed a few things, and now getting about 85MB/s again.

happy.

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(slow burst are because i'm on 150 mode due to old motherboard, still seem far from 150MB/s though).

Might
 
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