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dimension 4600c compatability


pccjamie

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pccjamie,

 

With your specs, you will need to look for a matched set of DDR333 or PC2700 DDR memory modules. Some DDR400/PC3200 modules know only DDR400 memory operation, and may not work at all with your CPU. This is due to the limitations on all Intel DDR1 chipsets, officially limiting your maximum usable actual memory clockspeed to 33.3MHz above your CPU's actual FSB clockspeed.

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pccjamie,

 

With your specs, you will need to look for a matched set of DDR333 or PC2700 DDR memory modules. Some DDR400/PC3200 modules know only DDR400 memory operation, and may not work at all with your CPU. This is due to the limitations on all Intel DDR1 chipsets, officially limiting your maximum usable actual memory clockspeed to 33.3MHz above your CPU's actual FSB clockspeed.

 

If this is the case, then why does the Memory configurator even suggest DDR400 as an option?

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If this is the case, then why does the Memory configurator even suggest DDR400 as an option?

 

That's because some Dimension 4600c's came equipped with "800FSB" (200MHz actual FSB clockspeed) CPU's, such as a 2.8C or 2.8E P4. Those CPU's can run DDR400 memory at its full DDR400 speed.

 

Your CPU, however, is a "533FSB" (133MHz actual FSB clockspeed) model. For your system with your particular CPU, the best match for 2GB (according to the Corsair Memory Configurator) would be a pair of CMSS1GB-333 modules.

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That's because some Dimension 4600c's came equipped with "800FSB" (200MHz actual FSB clockspeed) CPU's, such as a 2.8C or 2.8E P4. Those CPU's can run DDR400 memory at its full DDR400 speed.

 

Your CPU, however, is a "533FSB" (133MHz actual FSB clockspeed) model. For your system with your particular CPU, the best match for 2GB (according to the Corsair Memory Configurator) would be a pair of CMSS1GB-333 modules.

 

I have quoted myself in this post because I want to further clarify things about DDR400 compatibility with DDR333 systems.

 

pccjamie,

 

Sure, you can use the VS2GBKIT400C3 kit or a pair of CMSS1GB-400 modules, even with your particular CPU. However, since your system's BIOS offers absolutely no provision at all whatsoever to manually set the memory clockspeed, any DDR400 modules that you use in your system (given your CPU) will automatically run at the slower DDR333 clockspeed.

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That's assuming the Dell BIOS can do even that.

 

It also assumes that the modules' SPD has programming for DDR333 in addition to DDR400. (Fortunately, very recent production runs of most of Corsair's DDR400 modules have SPD's that are programmed for DDR333 and DDR266 in addition to DDR400.)

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  • Corsair Employees
Our modules do have the information in the SPD for slower speeds, but when we tested the DELL 4600 MB with a 533 FSB CPU it will not post unless you match the memory to the speed of the CPU. However we can use almost any other MB and not have a problem, so it appears that DELL has done something in their bios so that you have to use their module.
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  • 2 months later...

I have a follow-up question to this model Dell Dimension 4600c. Given the following specs:

 

FSB - 199.5 MHz

Bus Speed - 798.0 MHz

Proc speed - 2.99 GHZ

 

Would I be able to install CMX512-3200C2 (two matched sticks = 1GB)? I am looking into purchasing TWINX2048-3200 (two matched sticks = 2GB) for my Shuttle XPC SN95G5 V3 and then using the current CMX512-3200C2 from the SN95G5 V3 in the Dell Dimension 4600c.

 

I've been happy with running the CMX512-3200C2 at 2.5-3-3-6 at 1T in the SN95G5 V3. I would like to continue with Corsair for the 2GB upgrade.

 

Thanks for your help.

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