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Two sticks of XMS3200C2 - won't run dual channel at 200MHz at ALL.


MichaelD

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Hello,

 

About...two years ago, I purchased a single 512MB stick of XMS3200C2. About a month after that, I purchased another stick.

 

About 6 months ago, I finally tried them in a dual channel configuration at 200MHz. System would boot, but Windows crashed soon afterwards.

 

I read up on the specs and the specs say "CAS2.0 single stick, CAS2.5 in dual channel configuration."

 

CPU-Z shows that they have different timings at 200MHz. 3-3-8 and 4-4-9.

 

Well, they won't run in dual channel on any motherboard I have at 200MHz. They will at 166MHz though.

 

I've tried running them by SPD, upping the voltage to 2.7 then 2.8v. I've tried manually setting the timings, etc. Nothing works.

 

Since the sticks are advertised to run dual channel albiet at CAS2.5, and that's not happening would this be covered under warranty?

 

Please LMK, either here or by PM/email. Thanks very much. I really like this ram, but am disappointed I can't run dual channel. :!:

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Since the sticks are advertised to run dual channel albiet at CAS2.5

 

HUH? The same timings used with one stick will work with 2. HOWEVER, multiple things can muck that up. Your answers to the following questions will help to clear some of that up.

 

What CPU / FSB / Motherboard do you have?

 

What is the exact part # / revision # of each stick?

 

How To Read the Memory Label

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HUH? The same timings used with one stick will work with 2. HOWEVER, multiple things can muck that up. Your answers to the following questions will help to clear some of that up.

 

What CPU / FSB / Motherboard do you have?

 

What is the exact part # / revision # of each stick?

 

How To Read the Memory Label

 

 

Oh, here we go. ;)

 

Motherboard: Asus NCCH-DL

CPUs: Dual 1.6GHz Xeons @ 3.0GHz (200 x 15)

The power supply is an Antec EPS550; bios shows all voltages dead-on spec

It's in a server case with enough airflow to inflate a passenger balloon

I'd have to open up the case to get you part numbers, but IIRC, they don't match, though the MODEL# is identical XMS3220C2.

 

They are advertised to run dual channel, 200MHz @ CAS2.5. They won't even do it at CAS3, which I've tried.

 

They also didn't work on an Abit NF7-S v2.

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On an Intel system, TwinX packs are advertised @ 200 Mhz @ CAS 2.0.

 

However, can XEONs even take non-registered, non-ECC memory? Are the REVISIONs different between sticks?

 

Thanks for the assistance, Wired. :)

 

I have to open the case to look at the sticks...wait, lemme open CPU-Z...

 

CPU-Z tells me nothing, but SANDRA says:

 

Memory module 1: PC3200U-2533-600

Memory module 2: PC3200U-2544-600

 

Does that mean anything?

 

Oh, the NCCH-DL is i875-chipset based. It can take both ECC and Non-ECC memory modules. Both are fully supported by this board. It just can't do ECC Registered memory.

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  • Corsair Employees
Please tell us the complete part# and revision of both modules, and I would test them one module at a time with http://www.memtest.org to be sure. But if they do not match, you will have to set the memory frequency at DDR333 and set the timings manually to Cass 2.5-3-3-7 and I would not suggest dual channel if they are not the exact same part# and revision.
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Please tell us the complete part# and revision of both modules, and I would test them one module at a time with http://www.memtest.org to be sure. But if they do not match, you will have to set the memory frequency at DDR333 and set the timings manually to Cass 2.5-3-3-7 and I would not suggest dual channel if they are not the exact same part# and revision.

 

 

Thanks, I will test them out with Memtest.

 

However, these sticks ARE advertised to run at 200MHz, in dual channel mode, at CAS2.5. NOT 166MHz at CAS2.5. I'm sure I don't need to make a copy of the .pdf and highlight this for you. No offense.

 

Bottom line: The sticks are NOT doing what they are advertised to do, period.

 

I will test them with Memtest, singly. If they should fail, where do we go from there, based on what I just stated in the parargraph above?

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Yes they should run at DDR400, sorry I thought you had 533 FSB CPU's.

But with miss matched XMS3200C2 modules the suggested settings would be Cass 2.5-3-3-7. Only a Twinx set would be rated at the tested settings with 2 modules only. But I would test the modules one at a time at the tested settings to be sure one is not failing. In addition, if they are not the same revision you should run them in single channel.

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Yes they should run at DDR400, sorry I thought you had 533 FSB CPU's.

But with miss matched XMS3200C2 modules the suggested settings would be Cass 2.5-3-3-7. Only a Twinx set would be rated at the tested settings with 2 modules only. But I would test the modules one at a time at the tested settings to be sure one is not failing. In addition, if they are not the same revision you should run them in single channel.

 

 

Im going to run Memtest on them right now. Lately, I've been getting errors from them in SINGLE channel mode, running by SPD. :(

 

I'll let you know what happens.

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Please do and I would set the Dim Voltage to 2.7X Volts as well.

 

 

I am an honest person. I ran all the Memtests 5 times per stick. Both sticks passed all 5 tests without a single failure. :bigeyes:

 

I don't get it.

 

Just FYI, here's the info on the sticks:

 

XMS3202v1.1 - 0252035

XMS3202v2.2 - 0318041

 

A mismatch if I do say so myself. I guess my motherboard is picky about ram, and being that the timings on these two sticks are way off, it is not happy about it.

 

Is there a way to "trade up?" Obviously, these two sticks are good, just mismatched. Can I send in these two sticks with some currency and get a matched CAS2 pair? Hey, I lose nothing by asking, right? :D:

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I am an honest person. I ran all the Memtests 5 times per stick. Both sticks passed all 5 tests without a single failure. :bigeyes:

 

I don't get it.

 

Just FYI, here's the info on the sticks:

 

XMS3202v1.1 - 0252035

XMS3202v2.2 - 0318041

 

A mismatch if I do say so myself. I guess my motherboard is picky about ram, and being that the timings on these two sticks are way off, it is not happy about it.

 

Is there a way to "trade up?" Obviously, these two sticks are good, just mismatched. Can I send in these two sticks with some currency and get a matched CAS2 pair? Hey, I lose nothing by asking, right? :D:

 

'TTT' 'Bump' 'Up' 'anyone home?'

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Did you try the settings I suggested with both modules Cass 2.5-3-3-7 at 2.75 Volts and did they pass or did you still get errors?

 

Well, when I tested them singly, I had the voltage at 2.7v and the timings per SPD, which I believe were 4-4-7, CAS2.5

 

I got no errors at all at those timings. Do you want me to try to force 3.3.7 timings and test the sticks singly?

 

If they fail at those timings, do I RMA them to you?

 

Also, what about the "trade up" thing I mentioned? Is that something we could work out?

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Test one stick at a time in the same slot using the warrantied timings:

 

CAS Latency: 2.5

RAS to CAS Delay (tRCD): 3

Row Precharge (tRP): 3

Active to Precharge Delay (tRAS): 6

 

OK, I'll repeat the tests again tonight. Thanks for the help. I'll report back later tonight; I'm at work right now. (Shh! Don't tell them I'm surfing! ;))

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  • Corsair Employees

We can try replaing them, but you will have to make the request by email to Customer Service to see if they will exchange them for 2 modules that are the same revision. Please send us a email with a copy of the form or all of your info name address and phone# and the Module part# and copy the link to this post and email it to Rma@corsairmemory.com.

If after 1 day or 24 hours excluding weekends you do not get the rma please email the same to warranty@corsairmemory.com and we will help to resolve it.

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We can try replaing them, but you will have to make the request by email to Customer Service to see if they will exchnage them for 2 modules that are the same revision. Please send us a email with a copy of the form or all of your info name address and phone# and the Module part# and copy the link to this post and email it to Rma@corsairmemory.com.

If after 1 day or 24 hours excluding weekends you do not get the rma please email the same to warranty@corsairmemory.com and we will help to resolve it.

 

 

I think I will try this route rather than just keep testing them. All they can tell me is "NO." If I had the same revision, I could run them dual channel and I'd be happy.

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Well they normally will try and accommodate you, but we do not sell direct so its not an easy task.

 

 

If my RMA is approved, do I have to send in a copy of the receipt from when I purchased the two sticks of RAM? I'm not sure if I have those anymore.

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  • Corsair Employees
Not usually, only if there is some discrepancy, would we ask for a copy of the invoice. If you run into any problems with the RMA just let us know and we will do our best to help you resolve them.
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