mycorr Posted October 24, 2007 Share Posted October 24, 2007 The SPD on the Corsair memory I have is set to 5-5-5-18 and 800 MHz, so that's what my mobo is running it at since it's set to AUTO. However, the .pdf states that the memory has been tested for 4-4-4-12 at 2.1 V, and I'm assuming that's at 800MHz as well. My question is: should I set my mobo to those settings (can it even handle them?), or should I enable SLI? Thank You. P.S. This is on Vista Home Premium 32 bit, if it makes any difference. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 I found this Corsair lab test. It says that the board detected the memory as 4-4-4-12 and 800MHz. Mine didn't, so I'm not sure what to make of this now. Anyone know what's going on? Thanks Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 The SPD on the Corsair memory I have is set to 5-5-5-18 and 800 MHz, so that's what my mobo is running it at since it's set to AUTO. However, the .pdf states that the memory has been tested for 4-4-4-12 at 2.1 V, and I'm assuming that's at 800MHz as well. My question is: should I set my mobo to those settings There is a standard for DRAM. The JEDEC DRAM standards. These standards give 800Mhz with 5-5-5-18 at 1.8v. Any DRAM of higher speed and lower latencies are above the JEDEC Standards. Your SPD sets to the JEDEC or EPP (Extended Performance Profiles). I found this Corsair lab test. It says that the board detected the memory as 4-4-4-12 and 800MHz. Mine didn't, so I'm not sure what to make of this now. Anyone know what's going on? Thanks Some don't and then you just manually enter the settings. Enter your BIOS and set: Multiplier = 9 FSB = 266 DRAM = Unlinked and set to 800Mhz Memory Timing FSB - Memory Clock Mode: Unlinked CPU FSB: 266 CPU Multi: 9 DDR FSB: 800 tCL: 4 tRCD: 4 tRP: 4 tRAS: 12 Advanced Memory Settings tRRD: Auto tRC: Auto tWR: Auto tWTR: Auto tREF: Auto Async Latency: Auto CMD: 2T CPU Spread Spectrum: Enabled PCIE Spread Spectrum: Enabled MCP PCIE Spread Spectrum: Enabled SATA Spread Spectrum: Enabled LDT Spread Spectrum: Enabled CPU Internal Thermal Control: Enabled Limit CPUID MaxVal: Enabled Enhanced C1 (C1E): Enabled Execute Disable Bit: Enabled Virtualization Technology: Enabled Enhanced Intel Speedstep Tech: Enabled LDT Frequency: 5x PCIEX16_1 Frequency (Mhz): Auto PCIEX16_2 Frequency (Mhz): Auto PCIEX16_3 Frequency (Mhz): Auto SPP<->MCP Ref Clock, Mhz: Auto Voltages Vcore = Auto Vdimm (DRAM Voltage) = 2.1v 1.2v HT: Auto NB Vcore: Auto SB Vcore: Auto CPU VTT: Auto You must now test for DRAM stability. Download memtest from http://www.memtest.org and extract the ISO image. Burn the Image to an optical disk and boot to the optical drive. Let the program run for two full passes. If it comes clean, then you are DRAM stable. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 Thanks DerekT, I just checked CPU-Z and it reported: FSB:DRAM = 2:3 and memory frequency = 400MHz. I've left everything on auto; why wouldn't the mobo be set at 800Mhz? Is there anything else I should know in light of this before I go ahead with what you prescribed? This is all pretty new to me, I appreciate your help. Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 Thanks DerekT, I just checked CPU-Z and it reported: FSB:DRAM = 2:3 and memory frequency = 400MHz. I've left everything on auto; why wouldn't the mobo be set at 800Mhz? Is there anything else I should know in light of this before I go ahead with what you prescribed? This is all pretty new to me, I appreciate your help. Your 400MHz DRAM in the Memory Tab of CPU-z when showing 400Mhz needs to be multiplier by 2 for Dual Channel Mode. Thus 400Mhz actually means 800Mhz Dual Channel Enabled. I run my memory at 570Mhz in the CPU-z Memory Tab, and this gives me 1140Mhz in Dual Channel Mode. All you need to do is set the Vdimm (Dram Voltage) and the timings and then test with Memtest. You are at 800Mhz. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 Now I understand, thanks again. I just tried memtest86 1.70 without changing anything. It was still going when I stopped it; it said it was doing test #6 and was still counting walltime. Just to be sure before I go ahead and do the test after changing the BIOS settings: I'm wondering if memtest actually did six full passes, or if the test takes a long time and that when I stopped it, it was only at test 6 of however many make one full pass? Thank You. Link to comment Share on other sites More sharing options...
Wired Posted October 24, 2007 Share Posted October 24, 2007 FYI there's 8 tests last time I checked. There should be a loop or pass count on the screen somewhere. Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 There is actually 10 tests to 1 full pass. The last two (9 & 10) happen in the blink of an eye though. There is a Pass count on the screen. Click Here to View the Pass and Error Count Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 Ok, so memtest does take a while. I checked my BIOS and found that: PCIEX16_1 Frequency (Mhz): 100 PCIEX16_2 Frequency (Mhz): 100 PCIEX16_3 Frequency (Mhz): 100 SPP<->MCP Ref Clock, Mhz: Auto I can't set PCIEX16_ frequencies to Auto, I can only set between 100-200. Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 Set to 200 Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 Alright, I'll test the changes and let you know. Thanks Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 You're very welcome and yes, please let us know your results. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 It didn't POST! and I almost forgot to reset RAID!!! There were however some differences in our menus: - the PCIX16_ frequencies set to 200MHz from 100MHz as you know - CPU Spread Spectrum could only be set to disabled or auto, i left it on auto - this kept both PCIE Spread Spectrum and MCP PCIE Spread Spectrum greyed out and set to disabled - SATA Spread Spectrum could only be set to disabled or auto, i switched it to auto - CPU Internal Thermal Control could only be set to disabled or auto, i left it on auto Everything else, I'm certain, was as you prescribed. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 Three things I didn't mention: 1- when it failed to post it beeped: once long then three shorter beeps 2- the one voltage i switched from auto to 2.1V was not called Vdimm (DRAM voltage), it was called Memory 3- my FSB and memory menu is different; it's titled: FSB & Memory Configuration FSB - Memory Clock Mode: i changed it from auto to unlinked FSB (QDR), MHz: i left it at 1066 (could have been 533-3000) MEM (DDR), MHz: i left it at 800 (could have been 400-2600) I assume it's the quad core difference. So, any ideas? Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 You might well have to set the 800MHz DRAM to 667 due to populating all four DRAM banks. Often this is the case of instability on both Nvidia and Intel based solutions. Your other settings were correct :) Do you have IM? If so, please PM me with your IM and I will contact you via messenger. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 I'm suspecting my FSB (QDR), MHz: setting sould have been switched to 800 from 1066. Could that be the problem? Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 I'm suspecting my FSB (QDR), MHz: setting sould have been switched to 800 from 1066. Could that be the problem? FSB (QDR), MHz: i left it at 1066 :!: I don't understand. You say you set it at 1066. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 No, it was already set to 1066 when I unlinked. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 Missed that last reply, no I don't have IM. Should my next step be to 667? or should I be satisfied with 5-5-5-18? OR turn on SLI?? Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 Missed that last reply, no I don't have IM. Should my next step be to 667? or should I be satisfied with 5-5-5-18? OR turn on SLI?? Can you find stability with 5-5-5-18 and 800Mhz? It is not good to turn on SLi because that DRAM does not have SLi characteristics. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 It's been set at 5-5-5-18, 800MHz, auto V since I brought it home from the store and has never had a problem. Memtest didn't find any errors in the first five and a half tests just now. Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 The package says, SLI-Ready. A little added sticker to the front. Also I noticed in the manual, that the screenshot says, SLI-Ready Memory: Not Detected. Whereas my BIOS says : disabled and has a few options. Link to comment Share on other sites More sharing options...
DerekT Posted October 24, 2007 Share Posted October 24, 2007 The package says, SLI-Ready. My mistake. Sorry. I was helping someone with 6400 (non-sli) and I extended it to you. You can, if you wish, enable SLi. I do not in the systems I build as it has proven to be inconsistent and manual settings are "set in stone" as it were :). It's your choice though. Can you manually set them to 5-5-5-12 and find stability? Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 No Worries. Also, I don't think it says SLI-Ready on the pdf. I heard bad things about SLI but keeping hoping someone will tell me it's great. I have no idea if i can find stability with those timings. Would I have to change anything else? How much of a difference would it make? Link to comment Share on other sites More sharing options...
mycorr Posted October 24, 2007 Author Share Posted October 24, 2007 oh yeah, I guess that means you don't think it was the FSB (QDR), MHz: 1066 then? Link to comment Share on other sites More sharing options...
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