Question about RAM Allo.. today i got some new DDR400 RAM .. 2x512mb Gskill with a CAS latencey of 2. I already had 2x256mb of PC3200RAM but that RAM has got a CAS lateceny of 3. DDR400 + PC3200 = the same thing .. right ?? When i put the new RAM in and turned on PC .. There was an internal beeping and the screen just stayed black without loading up windows. Can you not mix RAM with different CAS timings ?? Each type of RAM works fine on its own. But not when i insert all the sticks :| Which sucks coz i want 1.5gb of ram .. seen as tho i just payed 65 quid for the extra 1GB. Urmm .. so can anyone help ?! Cheers
Well usually if possible if your going to buy new ram, you should try to look for the exact same ram, as ram of a different brand or different speed etc.. can cause problems, i think you will have to take out your old ram for good as the different cas latency of each sticks of ram are causing problems. Yea DDR 400 / PC3200 is the same thing.
It may be that the motherboard is trying to use a CAS latency of 2 for all RAM sticks. Your old ones are 3, and they'll struggle or crash with a CAS 2 setting. Try booting with your old sticks, set the BIOS CAS to 3, and then inser the new ones. I don't see any point in buying CAS 2 RAM if you're going to run it all at 3, but too late.
Well the 2x256 sticks were in the pc when i got it back in 2003. I think the chips are samsung from what i can see . It seems that this time i didnt investigate proper prior to my purchase !! But its not made that obvious really.. the idea i got was that as long as it was 3200 ram it would be compatiable .. bahhh. But on the plus side.. with just the 2x512 sticks there is a MASSIVE difference when playing heavy games such as FEAR ,Ghost recon AWF and Oblivion .. Just a shame that my other 2x256 sticks seem useless to me now. On another note.. in my bios settings my memory is set to 333mhz and i cant change it to anything else... Is that the CAS option ? The only other thing i can see is RAM AGP too which is set to 128 but i dont have a clue what that is in reference too.. Dell dimensions 8300 pc by the way !!
i think this is refering to the fact that your mobo is using onboard / integrated grfx, it refers to the amount of RAM to be shared with the grfx (AGP = Accelerated Graphics Port) so your onboard grfx i stealing 128Mb or your RAM i would advise you to get a grfx card and disable the onboard graphics
Maybe RAM AGP is the AGP Aparture size, it can be 32, 64, 128 or 256 i think, but that wont be causing any problems.
could be! but if my memory is correct, you just set the aparture to 128Mb and leave it, i can´t remember what it does though, i seem to rememmber my PC not booting but not sure it might not do anything (BTW my memory is from when CPU´s where rated in Mhz not Ghz)
Im pretty sure AGP aperture size is a legacy of systems of old. It was used to reserve a portion of the system memory (32, 64, 128 or 256MB) for when graphics card memory ran out. Modern graphics cards usually have enough onboard memory so a large AGP aperture size is not needed.
