F3-12800CL7D-4GBRH, in GB-P55-UD4P @ 1333 Mhz

[Sheezwack]

Hi,

Just wondering what settings I need to run this ram at CL7, but at 1333mhz in a gigabyte-P55-UD4P (i7-860)

I have tried a few different settings, even tried 9-9-9-24 timings, but am constantly getting memtest errors.

Also is there a good way to tell if the Motherboard is at fault as opposed to the RAM? (Such as swapping the modules around and getting the same error address?)



Have tried:
7-7-7-24, 1333mhz
1.58v DRAM
1.1v Vtt

9-9-9-24, 1333mhz
1.58v DRAM
1.1v Vtt

9-9-9-24, 1333mhz
1.63v DRAM
1.2v Vtt

[GSKILL TECH]

AI Overclock Tuner - Manual
CPU Ratio Setting - 18.0 for 2.80GHz
BCLK Frequency - 133
DRAM Frequency - DDR3-1333MHz

Fixed Voltage - 1.30V
IMC Voltage - 1.20V
DRAM Voltage - 1.50V
CPU PLL Voltage - 1.90V

DRAM Timing Control (submenu)
CAS Latency - 7
RAS to CAS Delay - 7
RAS PRE Time - 7
RAS ACT Time - 24

DRAM Timing Mode - 2N
All others can be AUTO

Try testing each stick individually, you may have a bad stick. You can also use memtest to test them.

Thank you
GSKILL SUPPORT

[Sheezwack]

Okay so I shouldn't even need more than 1.5v if I'm running 1333/CL7

Will try again with the above settings.

Is there some way to determine if it is the RAM and not the Motherboard slot that is causing the problem? (By looking at the failing address etc)?

[Sheezwack]

Hi,

My default voltages are this, what needs to be changed?

CPU Vcore = 1.16875
QPI/Vtt Voltage = 1.100
PCH Core = 1.050
CPU PLL = 1.800

DRAM Voltage = 1.500
DRVAM Termination = 0.750

Do I need to change these? I'm not sure some of them how they match up with your above suggestions.

Also what is the equivalent of DRAM Timing mode on these gigabyte motherboards? The settings you have given above seems to be for a different motherboard.

Currently Command Rate (CMD) is set to auto (1)

[Sheezwack]

Okay I've changed to this

CPU Vcore = 1.2000
QPI/Vtt Voltage = 1.200
PCH Core = 1.050
CPU PLL = 1.900

DRAM Voltage = 1.500

7-7-7-24

Command Rate (CMD): 2

Does that look right? Wil run a memtest and see if I get errors with this setup.

[RamJam]

Make sure you have the latest BIOS for your mobo.

Set the speed you want to try (either base 1600 or the 1333), timings at 7-7-7-24, voltage at 1.65 and you want the Command Rate at 2T or 2N however they show it, it's too tight to run at 1.

***Once booted, if stable you can work your way back down with the RAM voltage while maintaining stability.

****** If you chose to run at 1333 you can probably tightem up the timings

[Sheezwack]

Thanks RamJam,

I have been running the system for a week very stable at all default settings (1.5v DRAM, Command Rate 1), with 7-7-7-24, but yesterday I had two bluescreens.

I have a friend running 24-7-7-7 (CMD 1) as well who hasn't had any crashes. Also at 1333mhz, 1.58v.

The main thing I want to know is what are the most basic, simplest settings that I can use that should be stable, that will tell me if the ram is faulty or not. Even if this means 9-9-9-24 and 1.5v.

I mean if I set it to 9-9-9-24, 1.5V, CMD 2, and the rest on default. Should I be getting any memtest errors?

[GSKILL TECH]

Your settings look right. You should always test with stock rated specifications for the memory. If you have issues with your current settings, you'll want to test them individually to see which stick is bad. You should not have any issues runnning 1333 on that setup.

Thank you
GSKILL SUPPORT

[RamJam]

ramjam

I'd say you're looking good, let it run for awhile and if it remains stable you could try tightening things up some to up the performance. It won't be anything you actually 'see' but will possibly show if you run benchmark programs

[Sheezwack]

Okay well crashed again ..

This is my current setup
7-7-7-24 (CMD 2)
Vcore 1.2
Vtt 1.21
PLL 1.9v
DRAM 1.62v
1333mhz

I have tested the sticks separately, one of them always gives an error on Test #7 in memtest at 56.6 MB.

Does this mean the stick is faulty? It should run fine at those settings shouldn't it?

Sometimes it takes a few passes in memtest to show the error, but when it does it's always in the same spot.

Any suggestions?

[Tradesman]

What's your tRFC, may have to raise it.

[Sheezwack]

Even if only stick is failing and the other isn't? Keep in mind im only running at 1333mhz as well.

Also my friend has the exact same ram in the UD5 motherboard, running the same timings, at default voltages, without any issues - except he has 8gig and I have 4gig.

Anyhow my tRFC is 74, what should it be?

[Sheezwack]

Is it possible for a faulty graphics card to cause errors in memtest?

[Tradesman]

Might want to drop your tRFC to about 64-66 for 4GB.

As to the graphics card in Memtest yes it could, it could cause all different kinds of problems, even if it appears to be working. What appears to be a faulty GPU may also be a bad driver for the Graphics card and your particular mobo/GPU combo.

[Sheezwack]

Okay I've ruled out the graphics card, same error occurs with different cards.

The error I'm getting is only on one memory module, and always occurs at the same address. So far it has happened at least on Test 4 and Test 7 in memtest.

Shouldn't this be enough to indicate the the stick is faulty?

I will try lowering the tRFC and see if it makes a difference.