Which RAM to OC for DFI Lanparty JR P45 T2RS

Couldn't get past 860mhz speed with 2x2GB of XMS2 PC6400 w/DHX cooling.

So I got 2x2GB of Dominator TWIN2X2048-8500C5D v.1 and I have it set at 400/800mhz on FSB and while I OC on the E8400 I can't underclock this RAM past 960mhz. At that speed my CPU will be at 4GHZ.

DFI doesn't list alot of information about which RAM manufacturers are compatible with this MB so I hope that the RAMGUY can help.

I have a Corsair TX650W Power Supply as well.

I was hoping to be able to get to at least stock speeds PC8500 speeds with this RAM. I've tried tweaking the RAM voltages and speeds but once I get it stable and pump up the OC on the CPU I get BSOD.

It would be great if I could at least get this RAM to it's engineered speed setting.

Ok I figured it out the old fashioned way... by myself. :D

Well here is what I have learned.

1. Each PSU will create a different sine wave throughout a MB.

2. Each MB will distribute the energy from a PSU differently.

3. When OC it's very imprtant to have all electronic devices operating witin the rated PSU power supply with as little as electrical noise as possible and all parts of the build must be electricly harmonicly balanced to maximize the performace.

Why?

Because the resistance and electrical conductivity varies from each machine because I doubt that each machine is identical.

All of these findings are based on AC theory which applies to all electrical devices.

Since I don't know of an application that will OC my machine I had to break down and OC the old fashioned way by trial and error.

I tweaked the BIOS settings here and there and with some practice I have learned a little about how my MB and devices work under an electrical load.

I have tweaked this RAM to 4-4-4-12 settings with looose and relaxed timings and lowered rated speeds and I have been able to OC a Q9550 to a stable 3.4GHZ with the RAM at 5-5-5-15 timings@a little under 1000mhz.

Don't just plug my numbers in your machine because each machine is different.

I used Memtest86 v2.01 to test my ram at 333FSB speeds and it passed no problems.

As I tweaked my machine the memtest86 would fail at which point I would go into BIOS and tweak the RAM voltage and timing settings.

On the DFI P45 JR T2RS there are quite a few settings to work with and I am barely learning how they all work but little by little I am learning how to tweak my MB/CPU and RAM to run with my machine.

Somthing else that I have learned.

To avoid your OS from corrupting after initial installation of OS at stable MB/CPU/RAM speeds do a MEMTEST86x to make sure the RAM is stable.

Then do all the OC and RAM settings from the BIOS without booting up your OS. This will prevent your RAM from screwing up the OS by corrupting it.

Once you get the OC on the CPU and RAM passes memtest86x then it's ready to boot into the OS.

By doing the memtest86x testing before booting into the OS one can eliminate alot of time and work of reinstalling the OS from RAM not working properly and corrupting the OS.

I'm working on getting my Q9550 with C1 stepping to a stable 3.830GHZ speed.

Making progress. :cool:

Ok I figured it out the old fashioned way... by myself. :D

 

I'm working on getting my Q9550 with C1 stepping to a stable 3.830GHZ speed.

 

Making progress. :cool:

Good stuff. It's always best if you can figure it out yourself since it is your hardware and system components can show a marked differential in performance even with the same model components and doubly so with other components.

Can you post your BIOS settings? Do you have Static Read Control as a setting?

 

Can you post your BIOS settings? Do you have Static Read Control as a setting?

I don't see any static reading options in BIOS.

There are some fine tuning under RAM settings.

It's the latest and greatest DFI Genie BIOS.

This is on the P45 JR MB.

I just completed Memtest86 v2.01 with RAM@6-6-6-18 settings at around 1000mhz. Getting ready to boot into OS @ 3.830GHZ on Intel Q9550 w/C1 stepping. :cool:

I hope it post. :)

In Memtest86x my stable RAM settings are as follows.

Intel Core 2 3830 mhz

L1 Cache: 64k 62782 MB/s

L2 Cache: 6144k 26781 MB/s

Didn't boot.

Back to the drawing board. :D

Please post your BIOS settings regarding CPU and Memory, Voltages in here.

For example, the PE3 settings:

Configure System Performance Settings

Ai Overclock Tuner = Manual

eXtreme Memory Profile = Disabled

CPU Ratio Setting =

FSB Strap to Northbridge =

FSB =

DRAM Timing Control = Manual

DRAM Frequency =

DRAM Command Rate =

DRAM CLK Skew on Channel A =

DRAM CLK Skew on Channel B =

DRAM Timing Control =

CAS# Latency =

RAS# to CAS# Delay =

RAS# PRE Time =

RAS# ACT Time =

All Else to Auto

DRAM Static Read Control =

DRAM Dynamic Write Control =

Transaction Booster =

 

CPU Voltage =

CPU PLL Voltage =

FSB Termination Voltage =

DRAM Voltage =

NB Voltage =

SB Voltage = Auto

Clock Over-Charging Voltage =

Load Line Calibration =

CPU GTL Voltage Reference =

NB GTL Voltage Reference:

CPU Spread Spectrum =

PCIE Spread Spectrum =

Then I can help you with them.

So close to getting being stable at 3.8 GHZ.

I was able to boot up and do a CPU validation but then it got unstable.

This was with cleared Memtest86 v2.01 test .

I'll post all the BIOS details when I have time.

I'm so close to getting my machine stable with a mean OC.

Here is my CPUID test.

http://minidriven.com/GreenMachine/Q9550OCC1fast.JPG

http://valid.x86-secret.com/show_oc.php?id=412190

Any help in Overclocking my machine would be greatly appreciated.

I'm thinking that if I loosen up my RAM timings some or possible tweak the voltage and skew the clock amps.

Not sure.

I know I'm very close to being stable.

Ok guys I gave up on the C1 stepping Q9550. It just isn't designed for the P45 chipset.

So I'm seeing how a Q9400 works out.

I'll be happy if I get a stable 3.6GHZ OC with the Q9400.

It has the R0 stepping which is supposed to be very good.

I compare the Q9400 R0 stepper to the new E8400 E0stepper.

Hope it works out.

Great news!!! :cool:

I let the Q9550 with C1 stepping free because it didn't have the magic E0 stepping which is officially endorsed for the P45 chipset.

The Q9400 officially supports the P45 chipset and it has R0 stepping.

With the Q9550 I reached a stability barrier at 450FSB with a 8.5 multiplier. I saved the settings in my BIOS and ran them with the Q9400 and got a go for the boot and for the RAM settings on Memtest86x.

So here is how my machine is reacting with the Q9400!

http://minidriven.com/GreenMachine/Q9400450FSBstable.JPG

http://valid.x86-secret.com/show_oc.php?id=413416

http://www.techpowerup.com/gpuz/uwx9r/

Also pay close attention to my voltages and temps!! :bigeyes:

http://minidriven.com/GreenMachine/Q9400tempsat450FSB.JPG

I need to add a NB fan on the heatsink.

Q9400 transplant is a success so far. :):

LOL

My QX9650 (C0) is stuck at 425Mhz. You're running a 45nm quad core and can make 500Mhz on the FSB? That's VERY DAMNED good. I'm at 400 X 10 = 4.0Ghz but your memory speed must be far better than mine even though we both are at 4.0.

I'm still working on tweaking ram doing memtest86x before booting@500FSB@8xmultiplier for en effective speed of 4ghz Q9400 and a little over 1000mhz on the RAM.

Even though the RAM is at 1000mhz I'm sure the multipliers of the CPU speed and FSB speed play some factor in speed up the RAM at that speed.

I'm keeping all my voltages within the manufacturers specifications and tweaking the voltages and timings.

It's all hit and miss.

Hopefully I'll have 500 FSB soon.

Q9400@3.6GHZ is fast. :)

With some more tweaking I could probably hit 4gHZ. This was done in my case with air cooling.

http://minidriven.com/GreenMachine/490FSBQ9400.JPG

http://minidriven.com/GreenMachine/490FSBfastQ9400.JPG

http://valid.x86-secret.com/show_oc.php?id=413805

http://www.techpowerup.com/gpuz/5d9h7/

You should be able to hit far higher than I can since you only have half the cache I have. They've ripped out half the cache for the R0 revisions.

2X 3MB for the Quad R0 and 2 X 2MB for the Dual R0

http://i259.photobucket.com/albums/hh293/DerekT2008/QX9650x.jpg

I'm not sure if the larger cache slows down the speed of the CPU.

I think the stepping technology is what allows the cpu to reach higher speeds.

The Q9550 I had for a few days had better benchmarks at slower speeds. It hat 2x6mb oc cache while the Q9400 has 2x3mb of cache.

Q9550 with C1 stepping technology couldn't OC as well as the Q9400 with R0 stepping.

The Q9550 with E0 stepping should be fast and powerful,

After more tweaking I have got my machine stable with higher clocks. :)

My RAM still has room to go faster too. :D

Found some time and tweaked my machine some more. :)

New PR for 3dMark06 of 15,968!!!

Single Hd4850

http://minidriven.com/GreenMachine/GreenMonsterQ9400HD4850.JPG

http://service.futuremark.com/compare?3dm06=8155000

http://www.techpowerup.com/gpuz/wkpuy/

http://valid.x86-secret.com/show_oc.php?id=416931

Seems like no matter what I do I can't get this RAM to go the speed it is designed to go.

:(

Probably going to have to RMA it.

My MB is fast but the RAM isn't.

Even if I set my FSB super slow I can't get the RAM to post at its designed speed.

I hit a wall at about 960mhz on the RAM.

That is normal when over clocking the CPU like that.

Again let me explain.

Even if I run the CPU at stock speeds the RAM will not reach its designed speed. It never has.

I have tried to do it with an Intel Q9550, Q9400 and now E8500 (EO stepping).

If you can help me RAM GUY please explain to me what FSB settings/RAM settings I should run my RAM so that it performs at designed speeds.

:)