What RAM timings & voltages do I select?

AeroMonk

July 17, 2011 10:32:56 PM

I just installed a brand new 12GB Kit of RAM. My new RAM is:
G.SKILL Ripjaws Series 12GB (3 x 4GB)
DDR3 1600 (PC3 12800)
Desktop Memory Model F3-12800CL9T-12GBRL

Unfortunately, I don't know very much about timings and voltages, so I wouldn't know what to pick. Can you please tell me what numbers to set for the timings and voltages?

I asked my friend what settings I should change and here is what he told me to put:

* Memory Feature = make it 1600 MHz

For Parameters:
* tCL Setting = make it 9
(Currently 6)

* tRCD Setting = make it 9
(Currently 6)

* tRP Setting = make it 9
(Currently 6)

* tRAS Setting = make it 25
(Currently 18)

* tRFC Setting = leave it at current setting of 86

* Command Rate = make it 2T
(Currently 1T)

* tsrRdTRd Setting = make it 6
(Currently 4)

* tddWrTWr Setting = make it 7
(Currently 7)

* tdrWrTWr Setting = make it 7
(Currently 7)

* tsrWrTWr Setting = make it 6
(Currently 4)

For Voltage Control:
* CPU VCore = bump it up +0.1mv

* DIMM Voltage = make it 1.65V
(Currently 1.500V)

Here are 4 screen-caps that show the exact lines and numbers I'm talking about.

But like I said above, all those numbers and changes are what my friend suggested to me. And to be honest, I don't have a clue if he's even correct, or if he's just guessing the numbers. So, I'd much rather trust you guys, because you are the experts - so I really need you to tell me what timing and voltage numbers to change. Because I literally don't even have a clue, as to what numbers to change.

Thanks.

Here are my computer specifications:

CPU: Intel Core i7-920 2.66 GHz 8M L3 Cache LGA1366

HDD: Single Hard Drive 750GB SATA-II 3.0Gb/s 16MB Cache 7200RPM HDD

MOTHERBOARD: EVGA X58 3X SLI LE (141-BL-E757-TR)

RAM: G.SKILL Ripjaws Series 12GB (3 x 4GB) DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9T-12GBRL

GPU: NVIDIA GeForce GTS 250 1GB 16X PCI Express

PSU: 1000 Watts Power Supply (Xion SuperNova AXP-10000R14HE)

CASE: Thermaltake Spedo Full Tower Case

CASE FAN: Maximum Enemax 120MM Case Cooling Fans
*(500-1,200 RPM White Color with White LED Twister Bearing 8-14 dBA)
**Asetek LCLC 240 Liquid Cooling system w/ 240MM Radiator and Dual Fans

OS: Microsoft Windows 7 Home Premium (64-bit Edition)

More about : ram timings voltages select

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o1die

Memory Master

July 17, 2011 10:41:35 PM

All I would do is set the ram fsb if the board won't default to 1600; let the board automatically select the voltage and timings. Then use cpu-z to verify. Rarely do you have to set the timings manually, and sometimes the board won't post if you get one wrong.

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AeroMonk

July 17, 2011 11:59:41 PM

Well, the reason I think I need to manually set the timings, is because my RAM is only working as "Dual Channel" - but that's wrong cause the RAM is DDR3 Triple Channel.

One of the channels isn't being detected, it's number says zero. Someone told me, that the reason my channel is not being detected is because my timings and voltages are set too low. That's why my computer is only using 8GB, even though I have 12GB installed.

So that's why I was asking you guys for the exact timings and voltage numbers I should change to.

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AeroMonk

July 18, 2011 9:07:52 PM

Okay, I got help from EVGA (my MOBO Manufacture)

And I got help from G.Skill (my RAM Manufacture)

But they are both giving me conflicting advice.

Here are the settings EVGA told me to put down:

* 1600 MHz

* 1.5V

* 9-9-9-24-2N (Leave everything else as "Auto")
Now, I understand what the first 4 numbers are for, but what is "2N" and where do input that.

That's all EVGA wrote down for me to change.

But, G.Skill is telling me to change many more numbers & settings than EVGA did. Here's what G.Skill said:

* Memory Frequency = make it 1600 MHz

For Parameters:
* tCL Setting = make it 9
(Currently 6)

* tRCD Setting = make it 9
(Currently 6)

* tRP Setting = make it 9
(Currently 6)

* tRAS Setting = make it 24
(Currently 18)

* tRFC Setting = make it 128

* Command Rate = make it 2T
(Currently 1T)

tRRD - 6

tFAW - 20

tRTP - 7

tWR - 12

Rest can be AUTO

For Voltage Control:
* CPU VCore = bump it up +0.1V
(Currently +0mv)

* DIMM Voltage = make it 1.500V or 1.550V
(Currently 1.500V)

So who do I listen too? Do I just change a few things, like EVGA said - or do I change a bunch of things, like G.Skill said. Who's right and who's wrong?

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