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Intel D865PERL TwinX1024


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Installed Corsair TWINX1024-3200C2PT and get CAS3 settings. This is advertised as CAS2 memory. I have the latest BIOS from Intel.


How can you get away with this?


Hopefully ZipZoomFly will have another supplier with true CAS2 RAM.


Since you always ask the same questions:

Intel D865PERL

Intel P4 2.8Ghz 800FSB (200Mhz quad pumped)

System Bus Speed 800Mhz

System Memory Speed 400Mhz

ALL of the BIOS settings are Default which is AUTO.

This arrives at 8-3.0-3-3 for memory.

Intel does NOT arrive at memory settings from weighing or load (or any other FUD you wish to make up on memory issues), but by reading the SPD.

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  • Corsair Employees

First thing, there is no such thing as Cass 2 with DDR400.

And all of our modules that end with C2 designation will have their SPD set the JEDEC defined vlues for the IC we use to make that specific part.

The tested setting would need to be manually set.

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  • Corsair Employees

No what I am trying to tell you is that with DDR400 JEDEC calls for Cass 3

Our modules are rated at the tested settings but they would need to be manually set in your bios. Only the LL or XL version would use a custom SPD.

The reason is to give a wider range of compatibility. Some MB's will just not run well with non standard SPD's. In your bios you should be able to set the memory timings manually to the tested settings, and if you have the option to set the Dim Voltage I would suggest you set it to 2.7X Volts as well.

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In otherwords, per the official specifications of PC3200, it's 3-3-3-8 IIRC. Anything with lower timings is OC'd memory. YES, Corsair does warranty the C2s fully for life @ 2-3-3-6 on an Intel platform, and @ 2.5-3-3-6 on an AMD platform. They are warrantied up to, but not over, 2.9 volts.


Only the 3200LLs and 3200XLs have their SPD set to their warrantied timings. The C2s have their SPD set to the JEDEC approved timings. To obtain the warrantied timings you would have to manually change the BIOS settings. However, some memory controllers do not like non-JEDEC timings.


Oh, and Corsair has other CAS 2 memory as well: 3200XLs (2-2-2-5-T1)


Timings for the 3200C2s on an Intel platform:


CAS Latency: 2

RAS to CAS Delay (tRCD): 3

Row Precharge (tRP): 3

Active to Precharge Delay (tRAS): 6

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