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PC Setup..

DoTheDEW335 asked
Last Modified: 2010-04-26
I have the following hardware:
All purchased Retail. no OEM.

OCZ OCZ28001024ELDCGE-K 1GB Kit DDR2-800 PC2-6400 Gold Edition Enhanced Latency Dual Channel Memory Retail
Pentium D 820 w/ Stock Fan

I have that all installed in an antec case.
I have a few problems I'm trying to figure out.

My Ram when set to auto-detect in bios only sets to PC-4300 (regardless of setup as single or dual channel)
When I set it to manual (and only change memory settings) to 800Mhz , it does read correctly as PC2-6400 @ 800Mhz but I had issues with it when it was setup as Dual Channel, and it seemed to be stable on Single Channel

Why would it run perfect on Auto-Detect @ a lower frequency but be unstable at it's rated speed? This is suppose to be "Enhanced" and i'm not sure why i'm getting these results.

Watch Question

is it detecting the correct cpu FSB? sounds like it seeing a 533mhz fsb so its (by default) trying to match the ram frequency to the cpu fsb .
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Top Expert 2004


Yup the FSB shows 800. Kinda pissed, I spec'd out this setup due to the hardware was suppose to match up about perfect..

800MHz DDR2        
 CL 5-5-5-10
 1GB (2X512) and 2GB (2X1024) dual channel optimized kits        
 Gold Mirrored Copper Heatspreader        
 Lifetime Warranty        
 2.0 Volts        
 240 Pin DIMM        
 Optimized for Intel 955

I'll double check everything tonight as far as what it shows for the CPU speed.

I was referring to chips on modules, but their part numbers will be hidden by heat spreader.

I've had instances where reducing RAM speed was necessary for stability, but SPD information was correct.

Could be a compatibilty issue.  Do you have access to any other PC2-6400 RAM?
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Will the store you purchased the parts at let you exchange the OCZ for another brand?
Top Expert 2004


Well I don't have the pc anymore to move the memory to different slots, although I can try it sometime. I did build it for my Uncle so I will end up seeing him at some point. I like that idea, although knoxzoo did research. I also looked in the manual and had seen that the memory I got wasn't on the list of "tested" memory modules. Kinda BS because the memory was designed for a 955x chipset board. Asus has been my choice of board for over 5 years and i've never had this issue with them. I did post on the OCZ forum. Since I can't do anything at the moment, I am going to leave this open for a few more days. Come next week I'll end up closing this and splitting the points to who i think left the best comments.

There are a lot of factors beyond chipset.  That's why the mobo manufacturers offer lists of tested RAM.  They don't like the idea of limiting your choices any more than you do, but it's sometimes necessary.  You can make an apple pie with just about any kind of apple, but some recipes specify a type of apple for a reason, it works/tastes better.  Same here.  All RAM is not created equal.
Top Expert 2004


I understand this, i've been in the field for over 10 years and dealt with pc's since they were available to home users. My point is if you buy a memory kit that is optimized for a specific chipset and you buy the motherboard with that chipset , it should work. point blank. it seems to work if I set it manually but from further research it's looking like some DDR2's don't run @ what they are specified , they are actually rated lower but have worked and been tested to handle higher speeds so they market them @ the higher speed because it can handle it. I found a site that pretty much showed this but I can't find it anymore. It showed the Mhz of the ram @ a lower speed but showed it could go to 800Mhz even though it was DDR2-6400. I doubt i'd ever by OCZ again, or maybe it was due to where I purchased it but , the specs show the Latency @ 5-5-5-10 on the specs of the memory yet the memory sticker and I think box show 5-5-5-12. I know for a fact the sticker on the ram says that. I checked manufactor site and place I got it from and both say 5-5-5-10 memeory settings.  I'm just going to close this out, I think I got ripped off, and basically the machines out the door and working so. Thanks for you help.

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