Official GIGABYTE Forum
Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: jazpaisley on August 07, 2010, 12:17:46 am
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Using Corsair XMS Twin2x-6400c5dhx Memory 2x 1g sticks and works good, tried putting 2 more of the same memory modules to upgrade to 4g and goes into a post loop??
I tried the other channel and works fine with ether set of memory and tried using three 1gb sticks works very good, went from 5.5 to 5.9 Windows Experience Index... not sure why?
Just adding that forth 1gb stick won't work, I've tried doing what other theads at Corair forum had said to fix the problem, nothing worked.
Now I have one half of a match pair and a spare memory slot, that can't seem to use :( And no real answer why.
EP45-UD3L v1.0 bios F9
Q8400 @2.66ghz
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Are you sure its a post loop and not a windows loop?
Disable full screen logo in the BIOS to see if 4GB shows on bootup.
If its not booting knock up the voltage on these:
MCH Core
MCH Reference
DRAM Voltage
And Performance Enhance to Standard.
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No Post screen, and short beep continually about 20 times then restarts
standard setting, and have boosted the voltage, it has not solve the problem.
I can't understand why would there be a stabity issuse with DHX memory, and on the tested memory list for this motherboard
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Is their a matching set of four DDR2 800/1066 memory that will work as dual mode x2 on a Gigabyte GA-EP45-UD3L v1.0 motherboard with Q8400 CPU
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As long as the two channels match it should be alright. As you already know you usually have to increrase the Nortbridge voltage a bit to compensate for the extra loading of the four filled slots. The only other thing is to try running Memtest on the modules and make sure that there are no faults. Give it plenty of time, several loops.
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With three sticks are you able to POST in all slots no matter what order their in? Or is their one slot it will not POST on? Bad slot maybe.
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With three sticks are you able to POST in all slots no matter what order their in? Or is their one slot it will not POST on? Bad slot maybe.
You are quite possibly right Peter, I was just trying to eliminate any bad memory first.
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You are quite possibly right Peter, I was just trying to eliminate any bad memory first.
Yes but a read that the OP said “I tried the other channel and works fine with ether set of memory” so I'm thinking the ram is fine.
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You are quite possibly right Peter, I was just trying to eliminate any bad memory first.
Yes but a read that the OP said “I tried the other channel and works fine with ether set of memory” so I'm thinking the ram is fine.
Often though a "trial" is only short and may miss underlying problems with the modules that a thorough testing with something like Memtest might show up. A bit like booting up a computer versus a complete burn in.
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Now I'm using three 1gb, running in flex memory mode, CIA2 set racing (894mhz) with no problems, I have ran Memtest with no error's, Swap memory in different slots. These two Match sets won't work together, since I have bought them a year apart, they must have some manufacturing differences that made them incompatible to run in Dual Channel Mode.
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I am happy that you've managed to sort out the problem but I am surprised that the two kits of RAM won't work together. As long as they are the same part number I would have expected them to work.
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My son had EXACTLY the same problem as you on his EP45 UD3R as he sought to upgrade his existing 2 x 1gb Corsair Dominator 1066 with an additional 2 x 1gb of the same memory. Even tried a different pair of Dominators from the retailer with the same result.
After a lot of faffing about we replaced the newly purchased Dominators with 2 x 2gb of GSkill 1066, making 6gb total, and guess what, works like a dream with the existing Dominators.
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Maybe it was a case of using different makes of chips on the different modules. It's not what you would expect though and as long as you stuck to the same type you would expect them to work. :-\
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There was about 18 months between the original Dominators and the additional ones. Seems strange that memory from a different manufacturer should work better with the existing Corsair memory.
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That's what makes me wonder if they were using a different chip manufacturer.
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Now I'm using three 1gb, running in flex memory mode, CIA2 set racing (894mhz) with no problems,
You did test all four ram sticks in at 800MHz without any overclocking right?
Just for a test try setting the ram at a lower speed to 667MHz for all the ram sticks in.
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I am sure you could be right there Dark Mantis. The original Dominators and the new GSKILLs work fine at 1066mhz even at 1.8v. The additional Dominators would not work even at 2.1v / 667mhz
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The problem being that with these heatspreaders on you cant even see the chips to see what make they are so unless the manufacturer makes a change to the numbers you wont be any the wiser. That is often why there is a letter tagged on to the end of a modules id number to identify the chip manufacturer.
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No overclocking, C1 disable, EIST disable, CIA2 disable.
the thing is, all adjustment have to be done before I insert the last memory chip, sort of time consuming task.
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GA-EP45-UD3L v1.0 F9 Bios
(http://a.imageshack.us/img571/3741/s6302817.jpg)
(http://a.imageshack.us/img840/6788/s6302816.jpg)
(http://a.imageshack.us/img405/9581/s6302815.jpg)
(http://a.imageshack.us/img835/9285/s6302814.jpg)
Which Pull-up or Pull-down is best
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Well the (667) memory Ideal worked.
I had a old pair of Corsair Value RAM VS1GB667D2 5-5-5-15 combind with Twin2x-2048-6400DHX, and it works now I have 4GB dual channel memory.
Just need to test it now.
Wow Windows Experience Index went from 5.9 to 7.2 ......not sure why? ...am only running at 666 Mhz
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To be honest the Windows Experience Index is a total waste of time. As you can see it can easilly give false readings and the reason yours went up is because of the amount of memory you have installed now. If you want top check properly use one of the proper benchmarking programs available.
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Well the (667) memory Ideal worked.
I had a old pair of Corsair Value RAM VS1GB667D2 5-5-5-15 combind with Twin2x-2048-6400DHX, and it works now I have 4GB dual channel memory.
Right then off you go to report the bug to Gigabyte unless its a limitation that the P45 can't run all four slots at 800MHz.
http://www.gigabyte.com/support-downloads/technical-support.aspx
Your other option is to overclock the FSB which would up the RAM speed then set to 667MHz.
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I ran PerformanceMark 64bit and it wasn't to bad, I have tried down clocking the 800 memory to 666 but it still wouldn't work.
with the new twin2x2048-6400c5dhx v5.1 and my old Value ram in first slot for timing reference, it work great!
Memory Controller:
Type Dual Channel (128-bit)
Active Mode Dual Channel (128-bit)
Memory Timings:
CAS Latency (CL) 5T
RAS To CAS Delay (tRCD) 5T
RAS Precharge (tRP) 5T
RAS Active Time (tRAS) 15T
Row Refresh Cycle Time (tRFC) 44T
Command Rate (CR) 2T
RAS To RAS Delay (tRRD) 3T
Write Recovery Time (tWR) 13T
Read To Read Delay (tRTR) Same Rank: 4T, Different Rank: 6T
Read To Write Delay (tRTW) 8T
Write To Read Delay (tWTR) Same Rank: 11T, Different Rank: 5T
Write To Write Delay (tWTW) Same Rank: 4T, Different Rank: 6T
Read To Precharge Delay (tRTP) 5T
Write To Precharge Delay (tWTP) 13T
Precharge To Precharge Delay (tPTP) 1T
Refresh Period (tREF) 2600T
DRAM Read ODT 3T
DRAM Write ODT 6T
MCH Read ODT 11T
Performance Level 9
Read Delay Phase Adjust Neutral
DIMM1 Clock Fine Delay 9T
DIMM2 Clock Fine Delay 1T
DIMM3 Clock Fine Delay 9T
DIMM4 Clock Fine Delay 1T
I will RMA the twin2x2048-6400c5dhx v1.2 ram and see what will happen.
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Well, I receive my RMA#, I will return for replacement and see what will happen.
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Well that's good news and please keep us updated as to your outcome.
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The most anticipated day arrived, my RMA returned. Cross my fingers.... WooHoo it worked!
Memory Controller:
Type Dual Channel (128-bit)
Active Mode Dual Channel (128-bit)
Memory Timings:
CAS Latency (CL) 5T
RAS To CAS Delay (tRCD) 5T
RAS Precharge (tRP) 5T
RAS Active Time (tRAS) 18T
Row Refresh Cycle Time (tRFC) 52T
Command Rate (CR) 2T
RAS To RAS Delay (tRRD) 3T
Write Recovery Time (tWR) 14T
Read To Read Delay (tRTR) Same Rank: 4T, Different Rank: 6T
Read To Write Delay (tRTW) 8T
Write To Read Delay (tWTR) Same Rank: 11T, Different Rank: 5T
Write To Write Delay (tWTW) Same Rank: 4T, Different Rank: 6T
Read To Precharge Delay (tRTP) 5T
Write To Precharge Delay (tWTP) 14T
Precharge To Precharge Delay (tPTP) 1T
Refresh Period (tREF) 3120T
DRAM Read ODT 3T
DRAM Write ODT 6T
MCH Read ODT 11T
Performance Level 7
Error Read Delay Phase Adjust Neutral
DIMM1 Clock Fine Delay 10T
DIMM2 Clock Fine Delay 5T
DIMM3 Clock Fine Delay 10T
DIMM4 Clock Fine Delay 6T
Memory Slots:
DRAM Slot #1 1 GB (DDR2-800 DDR2 SDRAM)
DRAM Slot #2 1 GB (DDR2-800 DDR2 SDRAM)
DRAM Slot #3 1 GB (DDR2-800 DDR2 SDRAM)
DRAM Slot #4 1 GB (DDR2-800 DDR2 SDRAM)
(http://img821.imageshack.us/img821/1066/cachemem4.png)
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Oh! That's really good news. I am pleased for you. I know how nervewracking it can be not knowing if it will work. So at least that bares out our thinking. ;D