Query about Dell desktop RAM configuration

December 7, 2010 at 08:41:15
Specs: Microsoft Windows XP Professional, 2.793 GHz / 3070 MB

I have 3 G.B.s of DDR2 RAM installed in four slots om my PC an Dell XPS400 2.8 GHz Dual Core running WindowsXP MCE2005 Pro SP3 ! Here is how I installed the RAM the PC when I upgraded it from 1GB of total RAM !
Slot #1
Type DDR2
Type DDR2
Manufacturer Crucial Technology
Max Bandwidth PC2-5300 (333 MHz)
Serial Number FFFFFFFF
Week/year 165 / 165
SPD Ext. EPP
Size 1024 MBytes
Manufacturer Crucial Technology
Max Bandwidth PC2-5300 (333 MHz)
Serial Number FFFFFFFF
Week/year 165 / 165
SPD Ext. EPP

Slot #2
Type DDR2
Size 512 MBytes
Manufacturer
Max Bandwidth PC2-4300 (266 MHz)
Serial Number FFFFFFFF
Week/year 06 / 33
SPD Ext. EPP

Slot #3
Type DDR2
Size 1024 MBytes
Manufacturer Crucial Technology
Max Bandwidth PC2-5300 (333 MHz)
Serial Number FFFFFFFF
Week/year 165 / 165
SPD Ext. EPP

Slot #4
Type DDR2
Size 512 MBytes
Manufacturer
Max Bandwidth PC2-4300 (266 MHz)
Serial Number FFFFFFFF
Week/year 06 / 33
SPD Ext. EPP
As you can see I have the 1 GB RAM in slots 1 & 3 and the 512M.B.RAM in slot 2 & 4, also the 1GB RAM sticks are PC-5300 and the 512MB RAM sticks are PC-4300 ! I know the RAM will run at the slower PC-4300 ,do you think this is making any noticable differance in the speed of my system ? I appreciate all that reply to my ?'s and thank you and happy holidays to all.
Nick


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#1
December 7, 2010 at 10:35:41

"2.8ghz dual core" do u have pentium d? List the cpu name. U will not notice any difference from ddr 533 to 667 or 800. If u wanna see some improvent make sure the RATIO is correct.

We can not fight new wars with old weapons, let him who desires piece prepare for war - PROPHET.


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#2
December 7, 2010 at 13:23:16

If you have an 800MHz FSB P4 or Pentium D, you should be running the RAM at 266MHz (DDR2-533).

Memories......

http://www.computing.net/answers/wi...

http://www.computing.net/answers/wi...


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#3
December 7, 2010 at 16:43:59

I assume you have looked at the manual to verify that Slots #1&3 are pairs?

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Related Solutions

#4
December 8, 2010 at 06:02:38

Honestly I cant say I have read it in the book that slot 1 & 3 are pairs however I have read it online at the Dell web site that this is how the M.B. is set up slot 1 and 3 being a pair and slot 2 & 4 ! To answer the ? others have aske YES my CPU is a Pentium D 820 Smithfield w/800 FSB, socket 775 LGA. About one month after I purchased this PC Dell came out with the Duo2 proccessors, I was not very happy that they where more concerned about moving old stock then giving me the lastest technology ,and I found out the Duo2 was 40% faster then the dual core ! With this said I have to say this PC does perform very well when multi tasking I will browse the internet with the Media Center running with live TV on in a resizable box on my desktop ,updating my Anti-Virus and it never freezes up on me, after the purchase of this system I added an ATI TV Wonder Elite PCI card my Graphics is an ATI PCI-Express card !FYI Curcial is the one that recomended the PC2-5300 DDR2 RAM for my system the PC2-4300 was what the system came with from Dell !
Thank You to All
Nick

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#5
December 31, 2010 at 09:33:29

Hi OtheHill
When you replied if made sure that slots 1&3 are pairs and I told you yes . However I took a look thru the book again and it turns out I was wrong. I tried to remove the RAM sticks and correct the problem however it turned into a hour long nightmare with everytime I thought I had the sticks installed properly I would recieve a loud beeping sound and the lights on the RAM slots would continue to blink in radom order ? Since the fastest my RAM on the system will run at is 266MHz would it really make much differance ,I finally was able to get the system to work correctly .I've changed RAM a dozen times or more and never had a problem . Now at the dell web site it says 1 & 3 are pairs however in the book it says 1&2 are pairs ? After going thru what I just went thru I really dont want to mess with them again if the speed diff is not even noticable. I also had one of the clips that snaps into place fall off .I have the clip however I did not put it back in . The PC is working without it and I have it in a safe place in case it starts to act up !
HAPPY NEW YEAR OTheHill
Nick

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#6
December 31, 2010 at 09:45:46

If it ain't broke, don't fix it. Happy New Year to you too.

BTW, you can tell if your rig is running in dual channel by watching the POST screens. Should state that, if it is the case.


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#7
January 1, 2011 at 06:25:06

Thanks for the reply OtheHill ! I made sure as the manual says that the matching pairs are in the right slots the 1GB sticks go in the slots with the white clips and thats slot one and two ,then three and four have the black clips . I came to the conclusion that the freeware app Speccy cannot tell which slots are pairs it only tells you what slot it is according to the order they are on the board . I checked and double checked and I have the 1 GB RAM sticks in the matching slots 1&2 and the 512MB in 3&4. the layout of the board has slot 1 and 3 are next to eachother and 2 and 4 are next to eachother ,however its the white clips and the black clips that make the slots matching pairs !
Thanks Again ,Nick

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#8
January 1, 2011 at 09:20:02

I understand what you have. I was just telling you how to determine if the memory is actually running in Dual Channel Mode. Even if the RAM is configured correctly it could still not run in Dual Channel if the other specs on the RAM are not a close match. That is why RAM intended to be run in Dual Channel is sold in sets. Older boards were more forgiving than new, faster ones.

Try using SIW to see what the actual RAM timings are running at and what the specs say the stick are rated for. Get SIW at the link below.

http://www.gtopala.com/siw-download...


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#9
January 2, 2011 at 06:45:37

Hi OtheHill I copied the first part of the report from Speccy and I believe Iam in Dual Channel Mode this is what the system scanner reported on my RAM >>>
RAM
Memory slots
Total memory slots 4
Used memory slots 4
Free memory slots 0
Memory
Type DDR2
Size 3072 MBytes
******** Channels # Dual
DRAM Frequency 266.0 MHz
CAS# Latency (CL) 4 clocks
RAS# to CAS# Delay (tRCD) 4 clocks
RAS# Precharge (tRP) 4 clocks
Cycle Time (tRAS) 12 clocks
Bank Cycle Time (tRŠ”) 16 clocks
Under Channels it says Dual would this verify that Iam indeed running in Dual Channel Mode ? I already have the Bel-Arc Advisor on my system and also Speccy both give you alot of information on your systems set up !
Thank You Again
Nick

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#10
January 2, 2011 at 07:40:13

No problem

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