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TWINX1024-4400C25 not operating at rated speed or below


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I have a AMD 3800+ (Venice core), DFI LanParty UT Ultra-D, and Corsair TWINX1024-4400C25. I am running the latest official BIOS (3/10). I am not overclocking anything right now. I have been playing with memory settings for over 3 days now, trying everything from default settings to loosening all the settings. Nothing is stable enough to run the rated timings of 2.5-4-4-8 @ 1T. Super Pi will fail the 32M test within seconds, and if I ignore Super Pi and play a game, the game will crash. All settings were first tested using Memtest 86, and Quicktech Pro (diagnostic software from my job). The only way I have been able to get the system completely stable (Super Pi passed and gaming for 6 hours straight) is with a speed of 400MHz instead of 550, and 3-5-5-10 @ 1T instead of 2.5-4-4-8 @ 1T. The only way I was able to achieve this, was by weakening the DRAM Drive Strength to 1, and weakening the DRAM Data Drive Strength to 3. From what I have seen online, there are many people with a DFI, Venice, and this RAM who are having massive problems like me, whereas others with a Winchester core seem to be OK with this setup. Is there a compatibility issue with the 4400C25 and Venice cores, or am I missing something. I am so frustrated right now, and could use some information. Thanks.
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Not at all, and you really just answered your own question weather you know it or not. What you have said would suggest a bios issue, or more specificly the bios version you have does not properly support the CPU you have. I would suggest you post over at the DFI user forum and check for the latest beta Bios should be 3-15 or newer.
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  • Corsair Employees

Please make sure you have the latest BIOS installed for your MB (download the Beta version) and load optimized defaults settings, and try the following BIOS settings;

TwinX512 or Twinx1024-4400C25

Genie BIOS/DRAM Configuration

DRAM Frequency Set: 1:1 or 400MHz or 200 (if option are 133/166/200)

Command per Clock: Disabled

SDRAM CAS Latency: 2.5T

SDRAM RAS to CAS Delay (tRCD): 4T

SDRAM Row Precharge (tRP): 4T

SDRAM Active to Precharge Delay (tRAS): 8T

And leave the rest at AUTO setting

Genie BIOS

FSB BUS Frequency: 275

LDT/FSB Frequency ratio: 4X

LDT Bus Transfer Width: 16 16

CPU/FSB Frequency ratio: Auto

PCI Ex: 100

K8 cool N’ quiet: Disable

CPU VID Start Up Value: 1.55

CPU VID Control: 1.55

CPU VID Special Control: Auto

Chipset Voltage Control: 1.8

DRAM Voltage Control: 2.9

PC Health Status: Make sure that all temperature is set at 25 degree C

All other settings are motherboards defaults

Then please test them one at a time with http://www.memtest.org and let’s make sure it's not some other issue! I would run the test for at least 2-3 passes to be sure!

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Not at all, and you really just answered your own question weather you know it or not. What you have said would suggest a bios issue, or more specificly the bios version you have does not properly support the CPU you have. I would suggest you post over at the DFI user forum and check for the latest beta Bios should be 3-15 or newer.

 

According to DFI, the beta BIOS will void support from them. Are you sure i should do this? If so, which one? I know the latest version is 5/10, but they have 5/10-1, 5/10-2, and 5/10-3. Which one is right for my RAM? I have not gotten any clear answers from the DFI forums.

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I posted on DFI, they said 5/10-3 is the one I should use. I installed it, and used the settings you provided. The settings wouldnt even get past POST, till I changed the CPU/FSB ratio to 9x, and the LDT/FSB ratio to 3x. After I did that, I ran Memtest86 for 3 passes without error. After that I ran QuickTech Pro from Ultra-X. I am a computer technician, and that is the software I use at work to diagnose RAM. The "Jump" test failed slightly. I went back into BIOS and set all the settings that "Load Optimized Defaults" had changed back to Auto. After that I ran Memtest86 and QuickTech over again, and it passed. I booted into Windows and loaded up SuperPi. SuperPi failed within seconds again. I ignored it and preceded to load up HL2. After playing HL2 for about 2 minutes, the game crashed. I went back into BIOS and loaded my DDR400 setting with 3-5-5-10 timings. I booted back into Windows and loaded SuperPi again. SuperPi did not error, and afterwards I loaded up HL2 again, and played for several hours without any problems. Could it be that my modules are old revisions? I have 4003v1.1, wheras most of the websites that have done reviews of these have 4404v1.1 What do you suggest now?
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Can you tell me in details the BIOS settings that you currently have on your system; which BIOS version are you using, and the detailed specification of your system?

 

CPU: AMD Athlon 3800+ (Venice core)

Mobo: DFI NF4 LanParty UT Ultra-D (beta BIOS 5/10-3)

RAM: Corsair TwinX1024-4400C25 (XMS4003v1.1)

Video: ATI X800XL 256MB PCI-e

Sound: Creative SoundBlaster Audigy 2 Platinum

HDD: 2x Maxtor 200GB ATA/133

Power Supply: Antec TrueBlue 480W

OS: Windows XP Pro

 

I think that covers detailed specs pretty well. As you can see above, and in my above post that I am using beta BIOS 5/10-3, which was recommended to me by the people over at DFI-Street for this type of RAM. Here comes the detailed BIOS settings for both DDR400 working and DDR550 not working. The DDR400 settings are the only timings I was able to get to work with stability after more than 3 days of trial and error. I followed this guide: http://www.dfi-street.com/forum/showthread.php?t=11397. The DDR550 settings will be the one from my last post before I switched back to the DDR400 settings.

 

DDR400 Working:

 

FSB Bus Frequency: 200

LDT/FSB Frequency Ratio: 5

LDT Bus Transfer Width: 16down 16up

CPU/FSB Frequency Ratio: 12

PCI-Express Frequencey: 100

K8 Cool 'n' Quiet Support: Disable

CPU VID Startup Control: Startup

CPU VID Control: Auto

CPU VID Special Control: Auto

LDT Voltage Control: 1.20

Chipset Voltage Control: 1.50

DRAM Voltage Control: 2.60

DRAM +.03 Voltage Control: Disable

DRAM Frequency Set: 200

Command Per Clock (CPC): Enable

CAS Latency Control (tCL): 3.0

RAS to CAS Delay (tRCD): 5

Min RAS Active Timing (tRAS): 10

Row Precharge Timing (tRP): 5

Row Cycle Time (tRC): Auto

Row Refresh Cycle Time (tRFC): Auto

Row to Row Delay (tRRD): Auto

Write Recovery Time (tWR): Auto

Write to Read Delay (tWTR): Auto

Read to Write Delay (tRTW): Auto

Refresh Period (tREF): Auto

Write CAS Latency (tWCL): Auto

DRAM Bank Interleave: Enabled

DQS Skew Control: Auto

DQS Skew Value: 0

DRAM Drive Strength: 1

DRAM Data Drive Strength: 3

Max Async Latency: 7

DRAM Response Time: Normal

Read Preamble Time: Auto

Idle Cycle Limit: 256

Dynamic Counter: Disable

R/W Queue Bypass: 16

Bypass Max: 7

32 Byte Granulation: Disable (8 burst)

 

 

DDR550 Not Working:

 

FSB Bus Frequency: 275

LDT/FSB Frequency Ratio: 3

LDT Bus Transfer Width: 16down 16up

CPU/FSB Frequency Ratio: 9

PCI-Express Frequencey: 100

K8 Cool 'n' Quiet Support: Disable

CPU VID Startup Control: 1.55

CPU VID Control: 1.55

CPU VID Special Control: Auto

LDT Voltage Control: 1.20

Chipset Voltage Control: 1.80

DRAM Voltage Control: 2.90

DRAM +.03 Voltage Control: Disable

DRAM Frequency Set: 200

Command Per Clock (CPC): Disable

CAS Latency Control (tCL): 2.5

RAS to CAS Delay (tRCD): 4

Min RAS Active Timing (tRAS): 8

Row Precharge Timing (tRP): 4

Row Cycle Time (tRC): Auto

Row Refresh Cycle Time (tRFC): Auto

Row to Row Delay (tRRD): Auto

Write Recovery Time (tWR): Auto

Write to Read Delay (tWTR): Auto

Read to Write Delay (tRTW): Auto

Refresh Period (tREF): Auto

Write CAS Latency (tWCL): Auto

DRAM Bank Interleave: Enabled

DQS Skew Control: Auto

DQS Skew Value: 0

DRAM Drive Strength: Auto

DRAM Data Drive Strength: Auto

Max Async Latency: Auto

DRAM Response Time: Normal

Read Preamble Time: Auto

Idle Cycle Limit: 256

Dynamic Counter: Disable

R/W Queue Bypass: 16

Bypass Max: 7

32 Byte Granulation: Disable (8 burst)

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I'd like to say after the trouble I've had with this exact memory and the Venice core CPU, I've sold mine and bought <insert competitor here> ram, which I popped into my machine, and it's now running happily @ DDR600!
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Please change the temperature under the PC health status at 25 degree Celcius.

 

That has been done. I did not think it was relevant to my problem, so that is why I did not list it in the above specs. On a similar note, my processor is being cooled by a Thermalright XP-90 (copper) heatsink with Thermaltake 90mm fan, which hangs over and blows on the RAM as well.

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I have called your tech support line since this forum is too slow at resolving my issue, and they said that I had pretty much tried everything. They offered to replace the modules, and so I am doing so. I will post back with my results when the replacements arrive.
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  • 2 weeks later...
Ok... Please let us know you make out!

 

Well I just got my RAM today...good turn around time guys, although I must say you need to get a few more people working the phones. It was very hard for me to reach a person each time I had called. Also, you should send out email notifications for the status of an RMA, or at least allow the customer to check it online. Anyway, I had updated my BIOS to a final version (6/15) instead of beta, and installed the chips. The optimized default settings did not pass memtest86, but they were too aggressive. I put everything to auto, and so far it looks great! I have passed memtest86, and 21 loops of SuperPI 32M, which is great since the old chips would fail after a few seconds in SuperPI. I will continue to test these, and will report back with further info. The chips that arrived are 4404v1.1 instead of 4003v1.1, and they are currently running 2.5-4-4-8 @1T 275MHz with all default votages. Thank you, I will report back soon.

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