CPU-Z Memory - interpretation required

[Crotchety]

I've checked my memory with CPU-Z and I don't understand, in spite of much searching, what it's telling me. I have DDR3 1333 installed. CPU-Z is reporting the DRAM frequency at 665 MHz and the FSB:DRAM ratio is 2:10. 665 x 2(FSB) = 1330, which is what memtest86+ reports. This is the closest i can get to what I am presuming is the magic number of 1333.

Is my memory running right?

memtest86+
DRAM freq 665MHz (DDR3-1330)
CAS figures of 9-9-9-24 (whatever they are...)
Dual Channel
BCLK 133 MHz

CPU-Z Memory tab:

DDR3, Size: 8192 MB, Channels: Dual, NB Freq: varies c.2394 MHz

Timings:
DRAM Freq: 665 MHz
FSB:DRAM: 2:10
CAS: 9-9-9-24
tRFC: 74
CR: 2T

CPU-Z SPD tab (same for each of 4 slots):

DDR3, Samsung, p/n: M378B5673EH1-CH9
size: 2048 MB, bandwidth: PC3-10700 (667 MHz)

Timing Table (all 1.5V):
457 MHz, 6-6-6-17-23
533 MHz, 7-7-7-20-27
609 MHz, 8-8-8-22-30
685 MHz, 9-9-9-25-34

Thanks for any spoon-feeding,
Crotchety

Just ask if you need more info

Windows 7 Home Premium 64-bit
Cubase 5.5.1 64-bit
* Device Setup: tick "Disable CPU Power Saving" (massive!)
* Device Setup: tick "Multiprocessing"
Focusrite SaffireLE (FW400) v.1.5
----------------------------
Dell XPS 8100 Desktop
CPU: Intel i7 860 @ 2.80 GHz (HT ON/OFF, C-State OFF, SpeedStep ON, TurboBoost OFF)
Chipset: Intel H57
RAM: 4 x 2 GB DDR3 @ 1333 MHz
HDD: Non-RAID, 2 x 1TB Samsung HD103SJ (7,200 RPM; DTR: 250 MB/sec; Latency: 4.17 ms)
_________________
Sounds: MySpace - Cactus Juice (formerly Ask Murt) Instruments: Piano/keys, Guitar, Mandolin, Vocal
Every day's a skool day...

[DG]

Your memory is running in dual channel mode, because you have the "wrong number of sticks". If you pull one of them out, and make sure that the other 3 are in the correct slots, you'll see the speed go up.

DG

[jcschild]

he is supposed to be in dual channel mode he has an 860.

DDR= Double Data Rate
so take the 665 and mulitple it by 2 = 1330Mhz

these numbers:
Timing Table (all 1.5V):
457 MHz, 6-6-6-17-23
533 MHz, 7-7-7-20-27
609 MHz, 8-8-8-22-30
685 MHz, 9-9-9-25-34

are what the auto default would be if you ran at that speed.

so 457 x 2 =914 would give you CL rating of 6-6-6-17-23
_________________
Scott
ADK
home of the "Kentucky Fried DAW"

[Crotchety]

Thank you, Scott, that's nice and clear. I suppose I'm running okay then, as I'm only just short of 666.5. Is this the bit that overclocking happens to? Any idea what the NB Freq relates to?

Furthermore, I see from the stick's datasheet that:

Bin (CL - tRCD - tRP) 9-9-9
tCK(min) 1.5
CAS Latency 9
tRCD(min) 13.5
tRP(min) 13.5
tRAS(min) 36
tRC(min) 49.5

All the (min) items are larger than any of the reported values, so I imagine that's a good sign too.

Does it look to you as if I can forget about the ram?

Crotchety
_________________
Sounds: MySpace - Cactus Juice (formerly Ask Murt) Instruments: Piano/keys, Guitar, Mandolin, Vocal
Every day's a skool day...

[jcschild]

if the question is
is it running at the correct speed then yes.

if you are getting errors thats what memtest is for
_________________
Scott
ADK
home of the "Kentucky Fried DAW"

[Crotchety]

It was the question. Memtest checked out with no errors (I wasn't expecting any) so I guess all that remains to say is thank you very much for your assistance, Scott.

Crotchety
_________________
Sounds: MySpace - Cactus Juice (formerly Ask Murt) Instruments: Piano/keys, Guitar, Mandolin, Vocal
Every day's a skool day...

[DG]