08-25-2015 11:55 AM - last edited 3 weeks ago by ROGBot
08-25-2015 12:09 PM
08-26-2015 03:00 PM
pountney wrote:
Hello all,
I am after some insight/advice really if possible 🙂
I have 256gb SM951 nvme along with my new motheboard and 6700k 😄 However after setting up and installing Windows 10 I notice slow read/write speeds after 10 mins when using Crystal Disk Mark. If I do the benchmark straight after startup I acheive these results:
Sequential Read (Q= 32,T= 1) : 2198.692 MB/s
Sequential Write (Q= 32,T= 1) : 1286.696 MB/s
Random Read 4KiB (Q= 32,T= 1) : 833.381 MB/s [203462.2 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 386.787 MB/s [ 94430.4 IOPS]
Sequential Read (T= 1) : 1600.030 MB/s
Sequential Write (T= 1) : 1268.911 MB/s
Random Read 4KiB (Q= 1,T= 1) : 58.129 MB/s [ 14191.7 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 221.263 MB/s [ 54019.3 IOPS]
Test : 1024 MiB [C: 16.6% (39.5/237.5 GiB)] (x5) [Interval=5 sec]
Date : 2015/08/25 17:47:50
OS : Windows 10 Professional [10.0 Build 10240] (x64)
But if I run the test 10 mins later I see totally different results (Alot slower):
Sequential Read (Q= 32,T= 1) : 86.308 MB/s
Sequential Write (Q= 32,T= 1) : 41.791 MB/s
Random Read 4KiB (Q= 32,T= 1) : 42.587 MB/s [ 10397.2 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 20.787 MB/s [ 5075.0 IOPS]
Sequential Read (T= 1) : 86.199 MB/s
Sequential Write (T= 1) : 41.738 MB/s
Random Read 4KiB (Q= 1,T= 1) : 25.061 MB/s [ 6118.4 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 20.702 MB/s [ 5054.2 IOPS]
Test : 1024 MiB [C: 17.0% (40.3/237.5 GiB)] (x5) [Interval=5 sec]
Date : 2015/08/25 18:42:05
OS : Windows 10 Professional [10.0 Build 10240] (x64)
I have a feeling the throttle may be down to excess heat as I know these drives run hot. The thing that confuses me is that even after restart and no data load I will still see the same poor results after 10 mins. So the drive is throttling after 10 mins without any load?!?!?!
Any help will be greatly appreciated 😄 Thanks Dan
08-27-2015 08:41 AM
08-27-2015 09:04 AM
pountney wrote:
Hi all thanks for the responses,
Desmond86 after some further testing I am almost 100% sure that the throttling is not occurring due to excess heat. fordsvt11 I am sorry that you are suffering with the same issue 😞 Hopefully we will both sorted soon though! Please keep me updated if you find a solution or have any more information.
m4x2012 the bios version is 0401 please can you let me know your bios version to, thanks. Are you running the nvme version of the sm951 as well?
Thanks
Dan
08-27-2015 12:06 PM
08-28-2015 03:48 AM
fordsvt11 wrote:
I am also running bios #508. Looking at m4x2012 specs it appears he has the ahci verson of the drive.
I spent a couple more hours trying to figure it out without any luck pountney.
08-28-2015 06:58 AM