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Ram Purchase Advise Please - Want To Match My Existing Pair.


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#1 MisterE68

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Posted 20 February 2007 - 08:53 PM

Hi, I am looking to buy another 2Gb RAM for my PC and if possible would like to match my existing pair. My understanding of RAM technology and the particular specifications for RAM is very limited, so I知 not having much success with my research so far.

Firstly, please advise if the RAM I知 considering will match my current pair (I have confirmed on the Corsair forum that this RAM will work ok on my system the question is limited to whether it値l work well with my existing RAM. Note that I got my question wrong when asking Corsair. I Meant 'timings', not 'speed' AND at the time I thought I had Legend memory installed. Uber Noob!). If it痴 evident that it won稚 match, perhaps you could advise what other products are available (if any) that would work effectively with my pair?

It might also help if you could explain WHY the product I知 looking at is/isn稚 compatible with my current set? The grey area for me is around the RAM timings (I really don稚 understand these at all) and just how close they have to be to mine to maximise the chance that they値l work together. (Note, I知 working on the assumption that if all the other specs are the same, it痴 the timings that will decide if the memory is compatible? Please correct me if I知 wrong) i.e. "240 Pin Unbuffered DDR2 4200 533MHz NECC SDRAM" + matching RAM timings?

Besides the RAM timings one other thing that confuses me is that CPUZ tells me my RAM is PC2-4300 (266MHz), but whenever I search for RAM for my system it advises using 4200? Is there a difference?

I will list below as much relevant info as I can about my PC & current RAM specs and also provide a link to a pair that I知 interested in buying.

My PC Specs:

Dell Dimension 5150
Intel Pentium D 820 2.8Ghz (2X1MB L2 cache, 800MHz FSB)
Intelョ 945G Chipset
Genuine Windowsョ XP Media Center Edition 2005
160GB SATA 3.0Gb/s with Native Command Queuing
256MB PCIe™ x16 ATI Radeon™ X600
Integrated Sound Blasterョ Audigy ADVANCED HD Audio
Dell™ Single TV Tuner Card with Remote Control
16X DVD+/-RW with Dual Layer Write Capabilities
Dell™ 5650 Surround Sound Speakers with subwoofer
19" UltraSharp™ Flat Panel LCD Monitor
etc etc...



Current RAM:

1GB (2X512) NECC Dual Channel DDR2 533MHz SDRAM Memory Samsung Brand (Detailed Specs here)

Interested in buying the following Corsair RAM:

Corsair 2GB (2x 1GB Kit) Value Select PC-4200, 240-pin DDR2, non-ECC, Unbuffered, 2x128Mx64 ($209AU) (Purchase site here). Note I cannot find a detailed spec sheet on this RAM to determine the timings. One website suggests 4-4-4-12, but another site shows the timings as 5-5-5-15?! Hence my confusion!

Hope you can help?

Cheers, MrE.

PS. Screenshots from CPUZ detailing my system specs:

CPU Screen

Cache Screen

Mainboard Screen

Memory Screen

SPD Screen

About Screen

PPS. I can provide the Register Dump if it helps?

Edited by MisterE68, 20 February 2007 - 10:50 PM.


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#2 boopme

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Posted 20 February 2007 - 10:39 PM

Corsair site says considered RAM( VS2GBKIT533D2 ) is "Latency サ 4-4-4-12-2T "
http://www.corsairmemory.com/corsair/confi...tor_search.html

We would need the part # on the installed RAM to verify (It's on the stick).

All about RAM, BC tutorialL@@K
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#3 MisterE68

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Posted 20 February 2007 - 11:03 PM

Hi Boopme, Thanks for your response.

CPUZ suggests that the part number of my sticks are "M3 78T6553CZ3-CD5" (See links to CPUZ screens in my OP). Is that what you mean?

CPUZ also states that my timings are 4-4-4-11.

Does that mean this RAM would be compatible but will run at the slower speed (11). If so, what does this really translate to in terms of performance?

Sorry if I sound like a complete noob...




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