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Dell XPS 400 memory upgrade


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6 replies to this topic

#1 BigElCat

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Posted 15 July 2012 - 01:32 AM

I'm upgrading my Dell XPS 400.

I currently have 2x512M sticks of Nanya DDR2 PC2-4300 running at 266Mhz. My CPU is an Intel Pentium D 820, and the motherboard is a Dell OFJO30.

The Dell owners manual states that I can upgrade to PC2-5300. I'm not sure, but I think 667Mhz is the fastest the XPS 400 can use. PC2-5300 also comes in 800Mhz. Would 800 be a waste in this machine?

Also, I'm limited to running Windows XP due to compatibility issues at work. (AutoCad 2000, CNC cutting machines, etc). Windows XP 32 bit can only recognize (IIRC) 3.3 G of RAM. My intention is to run 4x1G sticks. I realize this would be a waste, but how else could I max it out?

Would 2x2G be a better option? The dual channel works with just two sticks, but I don't know if the individual slots will handle 2G.

I'm not a gamer, but I might play some older games like DOOM or GTA 3. Mostly it's surfing the web, and drawing on AutoCad 2000.

Any input would be appreciated! 800Mhz? 2 or 4 sticks? Would 4G be too much, and slow me down?

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#2 killerx525

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Posted 15 July 2012 - 02:31 AM

Get the fastest DDR2 ram available and i would start of with 2GB of ram and see how it goes. You can add another 1GB of ram later if needed.

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#3 sandman1374

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Posted 15 July 2012 - 08:55 AM

According to system specs from Dell you're limited to 1GB per slot. I'd give these a shot http://www.newegg.com/Product/Product.aspx?Item=N82E16820134681&cm_mmc=CNETFindMEMUS-_-20-134-681-_-na-_-na

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#4 BigElCat

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Posted 17 July 2012 - 11:33 PM

Quick Update: I ordered the Kingston KTD-DM8400/1G (x2) as recommended by Sandman. It's said to be compatible with the XPS 400. I found an independent vendor with a price 25% below newegg. $15.00 per gig delivered!

#5 BigElCat

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Posted 21 July 2012 - 01:00 AM

The above mentioned RAM was installed about 1 hour ago. Simple install, no surprises. The original 2x512K memory sticks were removed because they run at a lower frequency. The new Kingston 2x1G makes a noticeable improvement on web surfing. Pages scroll smoother and faster. My cordless optical mouse seems to be responding faster, too.

Question: The new RAM is DDR2 5300. It's supposed to run at 667MHz. According to my CPU-Z, it is running at 333MHz max. Is this something I can adjust? Why isn't it 667MHz?

#6 Platypus

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Posted 21 July 2012 - 01:55 AM

The RAM is DDR (Double Data Rate). 667MHz DDR runs on a 333MHz bus (as reported by CPU-Z). The double data rate (transfers are done on both rising and falling edge of the clock) effectively runs the RAM at the equivalent of 667MHz.

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#7 BigElCat

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Posted 21 July 2012 - 09:02 AM

Excellent answer, Platypus! My system is running well. I may opt for another gig of this RAM. I need to research the SSD option. too. Thanks to everybody who helped!




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