I think my hard disk is slow maybe its because of my motherboard its an Asus rampage 2 extreme mainboard so i ran a hard disk benchmark by crystalmark ... Are these speeds normal ?

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CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 166.743 MB/s
Sequential Write (Q= 32,T= 1) : 167.069 MB/s
Random Read 4KiB (Q= 32,T= 1) : 0.693 MB/s [ 169.2 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 1.412 MB/s [ 344.7 IOPS]
Sequential Read (T= 1) : 164.844 MB/s
Sequential Write (T= 1) : 166.485 MB/s
Random Read 4KiB (Q= 1,T= 1) : 0.521 MB/s [ 127.2 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 1.324 MB/s [ 323.2 IOPS]

Test : 1024 MiB [C: 14.8% (68.6/464.8 GiB)] (x5) [Interval=5 sec]
Date : 2017/04/04 16:53:38
OS : Windows 10 Professional [10.0 Build 14393] (x64)

Looks pretty normal for a spinning disk hard drive. Random 4K read/writes is where you'll see an SSD really shine over a HDD.

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Data Medics - Hard Drive, SSD, and RAID Data Recovery Service Company

So 4k random read write speeds are normal ... when i ran benchmark on partition d: of hard drive, speeds are slower than c: why ?

Is volume D used a lot more intensively than C?

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Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts

Well,
This is because Drive C is on the outer zone of the hdd and has the highest speed ,Drive D is in the inner zones where tracks are smaller and read/write speed is less .

_________________
Regards
Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com

A HD Tune read benchmark graph may be more helpful.

http://www.hdtune.com/testresults.html

_________________
A backup a day keeps DR away.

Yes It's the same size but has less free space but all of my applications are installed on c: ...
I ran crystalmark on drive d: here are the results ...
-----------------------------------------------------------------------
CrystalDiskMark 5.2.1 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 133.146 MB/s
Sequential Write (Q= 32,T= 1) : 133.583 MB/s
Random Read 4KiB (Q= 32,T= 1) : 0.630 MB/s [ 153.8 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 1.304 MB/s [ 318.4 IOPS]
Sequential Read (T= 1) : 129.816 MB/s
Sequential Write (T= 1) : 125.612 MB/s
Random Read 4KiB (Q= 1,T= 1) : 0.367 MB/s [ 89.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 1.149 MB/s [ 280.5 IOPS]

Test : 1024 MiB [D: 35.9% (167.4/465.8 GiB)] (x5) [Interval=5 sec]
Date : 2017/04/06 16:22:49
OS : Windows 10 Professional [10.0 Build 14393] (x64)

I ran crystalmark on drive d: here are the results :

-----------------------------------------------------------------------
CrystalDiskMark 5.2.1 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 133.146 MB/s
Sequential Write (Q= 32,T= 1) : 133.583 MB/s
Random Read 4KiB (Q= 32,T= 1) : 0.630 MB/s [ 153.8 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 1.304 MB/s [ 318.4 IOPS]
Sequential Read (T= 1) : 129.816 MB/s
Sequential Write (T= 1) : 125.612 MB/s
Random Read 4KiB (Q= 1,T= 1) : 0.367 MB/s [ 89.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 1.149 MB/s [ 280.5 IOPS]

Test : 1024 MiB [D: 35.9% (167.4/465.8 GiB)] (x5) [Interval=5 sec]
Date : 2017/04/06 16:22:49
OS : Windows 10 Professional [10.0 Build 14393] (x64)