Corsair DDR440 and Memtest problems.

[ghuraba]

Hi there.

 

I have a strange problem as follows.

 

On my DFI Lanparty NF4 SLI-DR motherboard bios 310, A64 3500 whinchester at 2.2ghz, Enermax Noisetaker 600W my Corsair 1GB DDR XMS4400 TwinX (2x512MB) CAS2.5 fails Memtest v1.51 on test 8. But each stick passes fine on its own. Only when run in dual channel mode in slots 2 and 4 will Memtest fail. I have increased the vdimm upto 3.2 volts but it still fails. Even at 245mhz Memtest fails with both sticks in dual channel mode.

 

Any ideas?

 

Michael

[RGone]

Loosen the memory up to 2.5, 4, 8, 3 and see what happens. Memory voltage not over 2.9Volts.

 

RGone...

[Infinity]

*

[Infinity]

Mine, or his (OP)?

[ghuraba]

I've tried the settings suggested above and get even more errors. I might just return this ram in exchange for some different stuff. What ram do you recommend for this motherboard?

 

Michael

[Guest oRiOn]

hey dude I love that ram, no problems with mine, it is Samsung TCCD and I run 2.5 4 3 7 2.8 volts, no need to burn it in etheir.

 

keep the ram or send it to me i can hit 313+ x8 and the highest i hit with x9 is 302 on air

[FutureDFI]

I m running those setting up to 265-270Mhz. Bios order.

Vddr=2.8V

 

200 FREQ

En CPC

2.5 Tcl

4 Trcd

7(8) Tras

3(4) Trp

A (15)

A (17)

A (2)

A (3)

A (2)

A (4)

A Tref (that makes a lot of difference in stability, leave it Auto or 1560-3072)

A (1)

interleave EN

 

DQS Auto

0

L7 <- this also makes a lot of stability issues

L4

7ns

5ns

256cycles

En

16X

7X

Dis

 

I hope its gonna work for u.

[ghuraba]

Future DFI I just managed to pass Memtest test 8 for the first time with your settings I ran at 260 x 8.5, [email protected]. I only did 1 loop but still it was the first time the ram has passed since I got my machine last Tuesday. I will give it an extended test soon.

 

I just hope it passed it for a few hours.

 

Thanks.

 

Michael

[FutureDFI]

I think its Ok.

 

Please put your signature (top of the page User CP) so we know your system and may help further.

[Dread-Star]

ghuraba

 

 

Here are some more settings for Corsair 4400 C25 memory.

 

Regards

 

 

DREAD

 

 

----------------------------------------------------------------------------------------

 

24hr Prime95 & Memtsest86+ Stable Settings. My CPU memcontrol is only 24hr stable up to DDR544 past 2400mghz, so I am limited to the current settings

 

MB: DFI Lanparty UT NF4 Ultra D Rev.A3

Bios: 310p

CPU: 3500+ NC CBAXC 0437

VC: ATI X850XT PE w/ATI 6.14.10.6525 drivers (CAT 5.4)

OS: Windows XP Home w/SP2

Ram: Corsair Twinx1024 XMS 4400 DDR550 C25PT #4404 Ver. 1.1 (TCCD) In the #2 and #4 (Orange) Dimm slots

Chipset Drivers: Revision 6.39 (w/out IDE or Firewall Drivers)

 

Current Ram Settings : These Ram settings are Memtest86+ stable from 210mghz to 282mghz w/my Corsair Twinx 4400 DDR550 C25PT w/437 TCCD chips and Brain Power PCB @2.7v (Up to 272mghz) or 2.9v (Up to 282mghz)

 

 

Dram: 200mghz 1:1 (1:1 w/ CPU clock set at 254 x 10 )

CPC: Enabled

Tcl: 2.5

Trcd: 3

Tras: 6

Trp: 3

Trc: 10

Trfc: 16

Trrd: 2

Twr: 2

Twrt: 2

Trwt: 2

Tref: 3072 (4708 will run up to 282mghz w/2.9v.) Note: 3120 seems to work fine also, I am still testing it.

Twcl: 1

 

Bank int.: Enable

Skew control: 255 +

Drive strength: 7

Data strength: 4

Max. Async: 7ns

Read Preamble: 5ns

Idle Cycle: AUTO

Dyn. Counter: Enable

R/W Bypass: 16x

Bypass Max: 7x

32Bit Gran.: Disable

 

NOTE: At the default Corsair timings of 2.5-4-4-8 1T w/2.6v I have tested this Ram w/Memtest86+ and it has passed @305mghz DDR610 using the 7x multiplier. Max Sandra Memory score is 7916mbs @ 2.6v 288x9 2.5-4-3-8 1T so far. These are both with the Tref @ 4708

 

CPU Voltage Settings etc:

 

CPU: 254 x 10

CPU Vid: 1.55v

Special Control: +110 percent (1.55v +110 percent reads 1.68 in bios 1.66 SmartG and SPD Fan)

Startup Vid: 1.55v

LDT/FSB: 3x

LDT: 1.2v

Chipset: 1.5v

VDimm: 2.7v (2.9v up to 282mghz w/same timings)

Vid Card: 105mghz

Cool & Quiet: disabled

PCIex Maximum Payload size: 256

__________________

[ghuraba]

It is me again;-)

 

After trying the suggestions above I "thought" I had found the right settings at which my Corsair would be stable. I was looping Memtest for 5-8 hours at 260fsb x 8.5 and 2.8-9 volts with no errors. But now I fail Prime95 instead. I keep the cpu at 2.2ghz all the time and just increase the fsb. Even as low as 232mhz I fail Prime95 after 5-7 hours using the 'In place use large ffts" test.

 

What is going on here? I buy ram rated to do 275mhz and it won't run stable at 232 with relaxed timings!!!

 

 

Michael

[FutureDFI]

It is me again;-)

 

After trying the suggestions above I "thought" I had found the right settings at which my Corsair would be stable. I was looping Memtest for 5-8 hours at 260fsb x 8.5 and 2.8-9 volts with no errors. But now I fail Prime95 instead. I keep the cpu at 2.2ghz all the time and just increase the fsb. Even as low as 232mhz I fail Prime95 after 5-7 hours using the 'In place use large ffts" test.

 

What is going on here? I buy ram rated to do 275mhz and it won't run stable at 232 with relaxed timings!!!

 

 

Michael

 

My corsair goes up to 295+ memtest stable at 2,5-4-4-8 (default settings) but not Prime stable. I'm Prime stable (~8hrs cant wait for more) at 265X9=2385 with A64 3000+ Winnie.

Since memory controller is on CPU u cant distinguished which its fail first, but i think most of the time is CPU that fails first.