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why is my HDD burst/avg speed soo low?

  • Thread starter Thread starter quasar923
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quasar923

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i just ran HD Tach downloaded here on TPU. I just bought my HDD 2 weeks ago. My burst speed was 127.8mb/s and average speed was only 88.1mb/s the hdd is a sata 3.0gb/s why am i not getting much higher? i know you dont get a 3.0gb/s speed but shouldnt it still be higher? i was reading a review on Newegg some guy left about the same hdd i got and said "Its not that this drive comes with a 1.5Gbps jumper, its just that its a pain to get off!" does that mean theres a 1.5gb/s jumper on it and i have to take it off to get 3.0gb/s? on the graph my hdd was shown with the slowest speed out of the 3 other example hdds, ATA UltraDMA 6, SATA 150, and SCSI 320. my random access time was 15.2 ms, CPU Utilization was 5%(+/-2%). my boot up times does seem a bit longer than it should, my old comp booted faster with more software on it.
 
Try updating your chipset drivers :) That has helped me before with some slow hdd speeds
 
ok now i ran the longer test the first test was the 8mb one or watev its called and this time my burst speed was a bit higher, i got 134.1mb/s, and the average read was still 88.1mb/s, random access was 13.2ms, cpu utilization was 4% this time my hdd was 2nd to last over the ATA UltraDMA 6
 
i went to the asus web page and i will download the sata driver, and the chipset driver
 
Assuming you're using the board in your specs, the drivers can be found here:

http://www.intel.com/support/chipsets/sb/CS-028823.htm


Also make sure you do this:

device manager--->disk drives--->right click drive--->policies--->optimize for performance and enable write caching.
Capture111.jpg


Check optimize for performance as this should give you a big performance boost :)

EDIT: 88MB/s is a good average read speed but your burst speed is a bit low. Maybe your drive has the jumper set to SATA 1.5Gb/s to help compatibility for older boards. Check the sticker on the top of your drive for jumper info. SHould show config for SATA 3.0Gb/s
 
oli_ramsay said:
Assuming you're using the board in your specs, the drivers can be found here:

http://www.intel.com/support/chipsets/sb/CS-028823.htm


Also make sure you do this:

device manager--->disk drives--->right click drive--->policies--->optimize for performance and enable write caching.
Capture111.jpg


Check optimize for performance as this should give you a big performance boost :)

EDIT: 88MB/s is a good average read speed but your burst speed is a bit low. Maybe your drive has the jumper set to SATA 1.5Gb/s to help compatibility for older boards. Check the sticker on the top of your drive for jumper info. SHould show config for SATA 3.0Gb/s
Click to expand...



it was already on those setting but then i put it to the one that says it recommends me to have a back up power supply because data loss if power outage but it said that in the write caching too which was already enabled along with optimize for performance.
 
I just checked that link,it says this download is no longer available.That was for the intel 4 series chipset installation utility.
 
oh ok i didnt see your edit yes it was not clicked to the second one so i checked that box
 
ok no gain after all that, only slight gain in avg speed went from 88.1 to 88.6mb/s. random access went down from 13.2 to 12.9ms, 128.3mb/s burst, cpu utilization 4%
 
HAve you checked jumper settings? It could be set to SATA 1.5 mode
 
ok with that intel update for the chipset i just downloaded, 13.3ms access, cpu 3%, avg speed 89.1mb/s, 128.7mb/s burst
 
Try switching to vista 32bit home premium on the os selection,see if that works for you.Wont work for me,say no longer available.
 
ok there was a 1.5gb/s jumper on there that was a pain to take off, had to pry it out with a thin knife bc its soo damn small and deep under the plastic, so i took it off, just ran the hdd test and burst speed is now 202.7mb/s, 12.6ms random access, cpu 3%, 88.9mb/s avg, placed second on the example chart after the SCSI Ultra 320.
 
Those speeds are accurate. You really won't notice a difference between 1.5Gb/s and 3.0Gb/s though.
 
yea i didnt notice much at boot up, the windows blue logo thing went by 10 and a half time, usually around that or up to 15 or so, but it was weird at start up after that it didnt go past the welcome screen for atleast 20 seconds just stayed on the blue screen taht says welcome then windows made a weird dodolump beep sound after a while then it finally went to my desktop, i think it was finishing installing the update i got from one of the links from ausus or that link i got off this thread for the intel update.
 
Yes the problem was the jumper.
The jumper is placed on there for older motherboards which only support SATA150
Thing is your HDD will never make use of the 3Gb/s bandwidth let alone 1.5Gb/s bandwidth.

Sounds stupid doesn't it?
But it's true.

The avg data transfer rate of your HDD will hover around 88-89mb/s.
 
Most of the time you will be limitted by the platter read speed, which is that 88MB/s number. The only time the faster interface will help you is when you are transfering data that is in the Cache, which is rare in typical usage.
 
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