WD Black running slowly.

Alfarjamie

Alfarjamie

Alfarjamie

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Joined
1 Mar 2013
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39
Normally i get 180mb/s read and 150mb/s write on my 2tb WD Black, after reinstalling windows it went down to 150mb/s read and write...

Now recently it has dropped to 60mb/s read and write...

I am not sure what caused this, either installing AKASA UV Blue SATA 3 cables... Which Akasa stuff is usually well built...

Or most likely caused by a driver.. Either Intel AHCI driver or Asmedia SATA controller, no clue how to remove either though since they do not appear in remove programs... help?
 
nothing else is using the HDD, speeds have gone up 20mb/s since removing asmedia sata controller... still no where near original though.. using crystaldiskmark x64 same as i was using before... no idea how to remove the intel sata ahci driver
 
changed the driver from intel sata to standard microsoft.... no avail... still slow as **** speeds :/

edit: definitely isnt the cable, reverted to last cable i tested it on and same results
 
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I don't believe those speeds you had initially. Those sound like burst speeds from the cache and not the disk itself (Or even from a linked SSD you had?)

Even maybe it's a new version of the benchmark?


However... assuming I'm wrong, I would be looking at the chipset drivers.
 
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tried everything with no difference.. assuming its just something thats built into windows or from a windows update... In linux it benches at its full speed but gradually drops in speed to far below the benchmarks on windows. guess ill get SSD, install windows and then repartition this drive.
 
It is purely something windows has done, i created a new partition on the hard drive of 500mb size and it is reading faster than the main one windows is on... ive had this issue before but no idea how to fix it other than to not install windows on it..
 
I would try completing erasing every single partition from the disk. Try an eraser than doesn't require partitions to be setup - perhaps WD Diagnostics? This way any partition data is sure to be gone.

After that, let Windows installation make the partitions by itself. Don't bother creating any yourself.
 
yea usually i get 150mb/s... but at one point it was capping 180mb/s every time when i was benching a partition not used by windows... and now its operating at half speed... So i guess ill get an SSD to get rid of this problem... but what if windows slows down the SSD? D:
 
Then it might be the following...

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Lol the problem isn't me... its just something windows does to partitions, when i first cloned over the windows partition it was fine, after repartition it was slow but the old partition was still fast... when i combined the partition fully on the new W7 partition it was fine for a while... then it reoccured.. and new partitions are full speed, in linux this partition is full speed. bleh... **** it.
 
Alfarjamie said:
yea usually i get 150mb/s... but at one point it was capping 180mb/s every time when i was benching a partition not used by windows... and now its operating at half speed... So i guess ill get an SSD to get rid of this problem... but what if windows slows down the SSD? D:
Click to expand...

Then you were either getting one of the following:

A) Cache speeds
B) Burst speeds
C) Program error.

The disk is quite obviously, fine.

And Windows doesn't 'slow disks down'. :)
 
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