Mixing CL7 & CL9 Memory

That is what I was hoping you guys could help me to do, run them at the good speed and timing.

Corsair Timing @ 7-8-7-20
Kingston Timing @ 9-9-9-27

My 1st attempt I tried 8-8-8-24 , it would run, but then crash eventually. Any ideas on some good timings? I also saw some other settings which were letters, I think 1 of them was N or something like that, and had no idea as to what to set that to.

Yes I understand that, but I do not have another $150 to spare for the same Hyper X sticks, so I was hoping to make it on 18gb of memory til I could get the same kit again. Im running Win 7 Ultimate btw.

How would you go about getting it to work? As far as same speed and cas numbers?

Will try that in a little bit, and report back results. What I was thinking about trying to do was either:
1) Try running them on auto @ 1800mhz, or
2) 7-7-7-21 @ 1333mhz,

Hey, thanks for the info. I havent really had any luck since I've combined them, have had to restart pc about 40 times now. Im running a quick memory test with "memtest" (I know, I shouldve ran probably memtest86 first while OS isnt loaded, but Im kinda short on time, and after all goes well with that test, I will then run memtest86.

As far as your timings, those look pretty good, I have them set to 9-9-9-24 @ 1333 for right now, I also do not have an option to set to 2T, just only 2N. I've always had my qpi @ 1.23xx, never have I went below 1.2xxx...but will give that a try as well because it appears that Im the only one who keeps it set that high. Neither do I lower the voltages below 1.65, seems a lot of ppl get lucky and drop down in the 1.50-1.60 range. Memtest is about 10% complete, testing 15gb of it, other 2gb loaded by OS, will chime in shortly...Thanks for the input

Oh, Kingstons are in in 1-3-5 (A1, B1, C1) and the Corsairs are in 2-4-6 (A2, B2, C2). Glad you mentioned it, but what was your reason for stating so? Is it because the slower sticks should be installed 1st, or because of they contain more memory? Just curious

Update: I just ran the memtest for about an hour, to my surprise...no issues. Yaaayyyyyy. Im not trying to "push it", but if possible, I would like to get more juice out my rig. Here is the current setup:

Core Speed 3073.4 MHz
BCLK timer 133.62 MHz

(Im posting the power because I'd like to use less watts, I've always kept it @ 23, had no idea that much juice was being sucked, and would like to aim for 20, or possibly lower)
Power @ 12x 35 Watts
Power @ 13x 39 Watts
Power @ 14x 44 Watts
Power @ 15x 50 Watts
Power @ 16x 57 Watts
Power @ 17x 64 Watts
Power @ 18x 72 Watts
Power @ 19x 82 Watts
Power @ 20x 92 Watts
Power @ 21x 103 Watts
Power @ 22x 116 Watts
Power @ 23x 130 Watts

Memory Type DDR3
Memory Size 18 GBytes
Channels Triple
Memory Frequency 668.1 MHz (2:10)
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 9
RAS# Precharge (tRP) 9
Cycle Time (tRAS) 24
Row Refresh Cycle Time (tRFC) 174 (I read that this should be no higher than 88 somewhere)
Command Rate (CR) 2T (now I see the 2T, lol)
Uncore Frequency 3207.0 MHz





DIMM # 1, 3, 5 (Kingston)
SMBus address 0x50
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Kingston (7F98000000000000)
Size 4096 MBytes
Max bandwidth PC3-12800 (800 MHz)
Part number KHX1600C9D3/4GX
Serial number AF18BFE5
Manufacturing date Week 15/Year 13
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.3
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-16-22 @ 457 MHz
JEDEC #2 7.0-7-7-19-26 @ 533 MHz
JEDEC #3 8.0-8-8-22-30 @ 609 MHz
JEDEC #4 9.0-9-9-24-33 @ 685 MHz
JEDEC #5 10.0-10-10-27-37 @ 761 MHz
JEDEC #6 11.0-11-11-30-41 @ 838 MHz
XMP profile XMP-1600
Specification PC3-12800H
Voltage level 1.650 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 9.0
Min tRP 11.25 ns
Min tRCD 11.25 ns
Min tWR 15.00 ns
Min tRAS 33.75 ns
Min tRC 45.00 ns
Min tRFC 260.00 ns
Min tRTP 7.50 ns
Min tRRD 6.00 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-18-24-0T @ 533 MHz (1.650 Volts)
XMP #2 7.0-7-7-21-28-0T @ 622 MHz (1.650 Volts)
XMP #3 8.0-8-8-24-32-0T @ 711 MHz (1.650 Volts)
XMP #4 9.0-9-9-27-36-0T @ 800 MHz (1.650 Volts)

DIMM # 2, 4, 6 (corsair
SMBus address 0x51
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC3-10700H (667 MHz) (This should be reading @ 800mhz, right?)
Part number CMX6GX3M3C1600C7
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-16-23 @ 444 MHz
JEDEC #2 8.0-8-8-22-30 @ 592 MHz
JEDEC #3 9.0-9-9-24-34 @ 666 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.650 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 7.0
Min tRP 8.75 ns
Min tRCD 10.00 ns
Min tWR 15.00 ns
Min tRAS 25.00 ns
Min tRC 50.63 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 7.50 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-7-6-18-35-2T @ 685 MHz (1.650 Volts)
XMP #2 7.0-8-7-20-41-2T @ 800 MHz (1.650 Volts)



ardware monitor Winbond W83667HG
Voltage 0 1.15 Volts [0x90] (CPU VCORE)
Voltage 1 1.73 Volts [0xD8] (VIN1)
Voltage 2 3.28 Volts [0xCD] (+3.3V)
Voltage 3 4.87 Volts [0xCB] (+5V)
Voltage 4 11.82 Volts [0xD4] (+12V)
Voltage 6 1.42 Volts [0xB2] (VIN6)
Temperature 0 40°C (104°F) [0x28] (SYSTIN).....Shouldnt this be lower at such stock speed?
Temperature 1 55°C (131°F) [0x6E] (CPUTIN)
Temperature 2 19°C (66°F) [0x26] (AUXTIN)
Fan 0 1854 RPM [0x5B] (SYSFANIN)
Fan 1 1406 RPM [0x3C] (CPUFANIN0)
Fan 3 1035 RPM [0xA3] (AUXFANIN1)


Now that we have that out the way, since 1333mhz and 1600 isnt noticeable with real world apps, I would rather have higher cpu speeds (I've never sucessfully OC'd to 4.0ghz) mainly stay @ 3.4-3.68. Im also very open to your opinions and or a good balace....will also settle for just leaving it as it.