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Windows 7: What's your memory assessment speed?

07 Jan 2012   #1621
doveman007

Windows 7 Ultimate x64
 
 

After a bit of tweaking, I'm happy with my Corsair Vengeance LP DDR3 1600Mhz results.



At stock DDR3-1333Mhz, NB 2000Mhz, the results were:
Copy 10466 MB/s
Read 8107 MB/s
Write 6831 MB/s
Score 7.47GB/s
Latency 66.9 ns

winsat mem: 14911.50 MB/s

At DDR3-1600Mhz (9-9-9-24-1T), which the RAM is specified for, I got:
Copy 10560 MB/s
Read 8667 MB/s
Write 6734 MB/s
Score 7.70 GB/s
Latency 65.0 ns

At DDR3-1600Mhz (9-9-9-24-1T), NB 2400Mhz, CPU-NB 1.32v I got:
Copy 11602 MB/s
Read 9457 MB/s
Write 7883 MB/s
Score 8.67 GB/s
Latency 61.5 ns

winsat mem 18172.96 MB/s

With the RAM at 1600Mhz, the highest NB I could boot at was 2600Mhz (with CPU-NB 1.32v, NB 1.3v) which gave the following but wasn't stable (I was getting crashes in Explorer):

Copy 11867 MB/s
Read 9822 MB/s
Write 8457 MB/s
Score 9.14 GB/s
Latency 60.4 ns

winsat mem 19929.93 MB/s

So I decided to drop the RAM back to 1333Mhz and see if I could increase the NB, which is how I got my current results with the NB @ 2800Mhz, which are somewhat slower in MaxxMemm for everything except Write speed, which gets a nice boost, but gives a better result with winsat mem.


My System SpecsSystem Spec
.
07 Jan 2012   #1622
panais

Windows 7 Ultimate 64bit SP1
 
 

Quote   Quote: Originally Posted by Britton30 View Post
Here's a nice one.
Attachment 192024
Cute!
My System SpecsSystem Spec
07 Jan 2012   #1623
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

doveman007 try setting your NB to 1.4V or 1.425 to see if that will stabilize it.
My System SpecsSystem Spec
.

07 Jan 2012   #1624
doveman007

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Britton30 View Post
doveman007 try setting your NB to 1.4V or 1.425 to see if that will stabilize it.
Thanks. I'll give that a go.
My System SpecsSystem Spec
08 Jan 2012   #1625
doveman007

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Britton30 View Post
doveman007 try setting your NB to 1.4V or 1.425 to see if that will stabilize it.
I actually forgot which one you said and increased the CPU-NB to 1.4v, but it seems to have done the trick

DDR3-800 (1600) Mhz (9-9-9-24-1T), NB 2800, CPU-NB 1.4v, NB 1.3v:

Copy 12049 MB/s
Read 10094 MB/s
Write 9021 MB/s
Score 9.56 GB/s
Latency 58.9 ns

winsat mem 21452.53 MB/s
My System SpecsSystem Spec
08 Jan 2012   #1626
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Quote   Quote: Originally Posted by Britton30 View Post
doveman007 try setting your NB to 1.4V or 1.425 to see if that will stabilize it.
This one It runs the memory contoller. what you did is fine too.
My System SpecsSystem Spec
10 Jan 2012   #1627
doveman007

Windows 7 Ultimate x64
 
 

Hmm, seems I spoke to soon. Next time I tried to boot it had the same problem accessing the HDD. It boots grub4dos OK but then can't seem to find the drive when I select the "boot from partiton 0" entry.

Do you think increasing the NB to 1.4v, so that both that and the CPU-NB are at 1.4v, will be safe and likely to fix this?
My System SpecsSystem Spec
10 Jan 2012   #1628
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Quote   Quote: Originally Posted by doveman007 View Post
Hmm, seems I spoke to soon. Next time I tried to boot it had the same problem accessing the HDD. It boots grub4dos OK but then can't seem to find the drive when I select the "boot from partiton 0" entry.

Do you think increasing the NB to 1.4v, so that both that and the CPU-NB are at 1.4v, will be safe and likely to fix this?
Yup, that was my original suggestion, NB>1.4V. The CPU NB may be better lower than that, say, 1.25
My System SpecsSystem Spec
11 Jan 2012   #1629
doveman007

Windows 7 Ultimate x64
 
 

Seems rather low for what's meant to be an enthusiast's board, but the BIOS only lets me take the NB to 1.388v so I've set it to that and the CPU-NB to 1.3v for now. Booted OK but it did so once before with only the CPU-NB at 1.4v, so I'll have to see if it consistently boots OK and then look at maybe decreasing the CPU-NB a bit.
My System SpecsSystem Spec
11 Jan 2012   #1630
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Always good to find the lowest stable voltage.

Run Prime95 Blend test, max RAM, to check for CPU-NB stability.
Be sure to watch the CPU core temps, use Core Temp.
My System SpecsSystem Spec
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 What's your memory assessment speed?




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