2 different ram sets

[Willzzz]

C11 @ 1600 is no better than C9 @ 1333 - I know as I`ve had both.

so either set the ram to 1333 in bios and C9 or use 8GB at 1600 and C9

Well the latency is essentially the same, but the 1600 will perform better on sequential transfers.

[Bonebreaker777]

Wonder what standard memory speed-timings equal mine 1333Mhz 7-8-7-17. 1600Mhz CL9 or maybe even 1866Mhz CL9?

[guren]

Will give it a try and see if the 2 different pair work when my PSU and SSD arrive.

[guren]

Thx everyone who have left a post here.
Just tried the 2 different pair of together and it works!
For some strange reason 1 pair is showing 1600MHz and 2nd 1333MHz
I haven't been configuring yet, will find some time to do it over the weekend.
Any insight to why the lower frequency in one of the pair rams?

[Greybeard]

Where are you seeing those two RAM speeds? CPU-Z?

Have done anything in the BIOS? or you've let it run under default settings? You may have to set them manually in BIOS to force both sets to show identical speed.

[guren]

I'm seeing the figures in the bios. the setting are default. I have tried the to set the rams to run at 1600MHz. However the computer show errors when started up.

In CPU-Z
Type DDR3
Size 16384MB
Channel Dual
NB Freq 3806.6MHz

Timing
DRAM Freq 534.3MHz
FSB DRAM 1:4
CL 9 clocks
tRCD 8 clocks
tRP percentage 8 clocks
tRAS 20 clocks
RFC 139 clocks
CR 2T

Slot 1 XMS 3 Max bandwidth PC3-12800K (800 MHz)
Slot 2 Vengeance Max bandwidth PC3-10700H (667 MHz)
Slot 3 XMS 3 Max bandwidth PC3-12800K (800 MHz)
Slot 4 Vengeance Max bandwidth PC3-10700H (667 MHz)

Hope these data helps

[Bonebreaker777]

Interesting. Asynchronous memory speeds?

I suggest the same thing as greybeard, go to the BIOS, manually set both kits to 800 Mhz (1600 Mhz) with 9-9-9-24 timings and if it is necessary, raise the voltage of the slower kit to 1.5V/1.6V/1.65V. And then test the stability with Memtest86+. Download Memtest86+ ISO here. Just get a empty USB key, put it on and have it run trough the night. Or you can always use the Windows memory test facility. Access it by typing Memory into the Start>Search.

[Greybeard]

Since you are populating all DIMM slots, it's probably ideal to start at a slower DRAM speed (less stress on memory controller), start at 1333MHz with timings that Bonebreaker have suggested, 9-9-9-24. You will most likely have to start at 1.6V DRAM voltage for the same reason you are running them at a slower speed.

btw, are you having some stability issues when running them on default settings?

[guren]

Interesting. Asynchronous memory speeds?

I suggest the same thing as greybeard, go to the BIOS, manually set both kits to 800 Mhz (1600 Mhz) with 9-9-9-24 timings and if it is necessary, raise the voltage of the slower kit to 1.5V/1.6V/1.65V. And then test the stability with Memtest86+. Download Memtest86+ ISO here. Just get a empty USB key, put it on and have it run trough the night. Or you can always use the Windows memory test facility. Access it by typing Memory into the Start>Search.

Thx for you help.
I've already tried setting it to 1600MHz, but computer start with error.
Window Memort Diagnostics detect no problem
I'm not having any stability problem too.


tried swapping the RAM slot, the same result.
Its the Vengeance pair running at 667MHz (1333MHz)

Tried starting the machine individually for each pair of ram.
Even just using vengeance pair the machine start up with 1333MHz (CMZ8GX3M2A1600C9)

Just tried vengeance with BIOS setting memory frequence from auto to 1600MHz and uping volts to both 1.6 and 1.65
all turn out result showing 1333MHz in asus software

Either the software is wrong or there is problem with the RAM

[guren]

Additional notes
In the Asus software it shows
Memory Info
Max bandwidth 667MHz

however the time table shows
xmp 1600
800Mhz
CAS#Lat 9
RAS#CAS 9
voltage 1.5v

[Bonebreaker777]

New BIOS to improve memory compatibility?

Try run them at 1333 Mhz and lower the latency settings till you find a solution to running them at 1600 Mhz+.

Did you tried to increase the latency (from 9-9-924 to, I don't know, 11-11-11-30 or maybe even 10-10-10-27 before restart and afterwards increasing the frequency to 1600)?
First change the latency, the restart, then increase the frequency. The reason why it does not want to run at 1600 Mhz could be timings so, give it a try and see if it works.

[guren]

I haven't had this before, but I got two Blue screen of death in 24 hour!
I haven't done anything in the past week!
I think there is memory problem! I'm pretty busy

BCCode: d1
BCP1: FFFFF880056EF417
BCP2: 0000000000000002
BCP3: 0000000000000001
BCP4: FFFFF8800496F134
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\071113-9531-01.dmp
C:\Users\Jensen\AppData\Local\Temp\WER-12402-0.sysdata.xml

Read our privacy statement online:
http://go.microsoft.com/fwlink/?link...8&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt

[guren]

I haven't had this before, but I got two Blue screen of death in 24 hour!
I haven't done anything in the past week!
I think there is memory problem! I'm pretty busy

BCCode: d1
BCP1: FFFFF880056EF417
BCP2: 0000000000000002
BCP3: 0000000000000001
BCP4: FFFFF8800496F134
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\071113-9531-01.dmp
C:\Users\Jensen\AppData\Local\Temp\WER-12402-0.sysdata.xml

Read our privacy statement online:
http://go.microsoft.com/fwlink/?link...8&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt