Memory question...ocz El Rev 2

Just put my system together. It has the 1.1 bios. I put in 2 512MB sticks of OCZ EL Rev. 2 Platinum. Sticks are in the 2 slots closest to the CPU. I've read that there may be some problems with 2 sticks of double sided ram. My machine will post if I use only 1 stick in slot 1. or it will post and read the full 1 GB if I put the sticks in Slots 1 & 3.
When it does post, it comes up as DDR333 Single channel, 64-bit, mem clock is 166Mhz
Tcl:2, Trcd:2, Tras:5 Trp:5 (2t Timing)
DDR Dimm at rows 0 1 4 5
How can I get the machine to recognize both sticks of dual-sided memory?
Maybe a stupid question, but....if the BIOS version has something to do with this problem, is there some way to update it before I install windows XP?
I guess I can use 1 stick and install everything, and then add the other after I flash the BIOS (if this is a BIOS related problem).

Quote
Originally posted by andygold
Well, I updated the BIOS to version 1.3 (up from 1.1), and the machine posts and seems to run fine now....althought the first boot after installing the second stick of ram, the machine came up into Windows, and when I tried to access a website, I got a BSOD, which flashed onto the screen for a split second, dissappeared, and the machine powered off(dropped dead). It's been running for a few hours since the reboot, with no problems.
The rams manually set at 2,2,2,5 {2T}, (or maybe it 2,2,5,2 {2T}...depends on how you read it), with the memory voltage set at 2.75(BIOS is flashing red as though it doesn't like this, but that's the proper voltage according to OCZ. I've got FSB at 200, AGP freq. at 67.
My other settings, although I don't know if they're good or not are:
High Performance mode = manual
aggressive timing = disabled
dynamic overclocking = disabled
spread spectrum = disabled
HT freq. = 5x .....is this the multiplier x fsb to =1000?
cool 'n' quiet = disabled
adjust CPU ratio = "startup"...not sure if this good
adjust CPU VID = 1.500v ...not too sure about this either
CPU voltage = "by CPU vid" not sure on this either
AGP voltage = 1.50v ....not sure once again
ACTUALLY I"M NOT SURE OF ANY OF THE ABOVE, BUT I GLEENED MOST OF IT FROM THIS FORUM
For info purposes, I have the 2 sticks in DIMM slots 3 and 4, with slots 1 and 2 empty. The Zalman fan sits on top of slot 1, and although when the DIMM is in this slot it does not hit the CPU's heatsink, I didn't want to keep bending the fins, during the removal and replacement. I don't believe there's any problem with this memory placement, acording to the mobo manual, but if anyone disagrees, please post.
So, to sum up, it appears the updated BIOS seems to have solved the problem!
Any thoughts on the rest of the settings would be greatly appreciated!!!!
"Bending the fins"??? Do you mean it is NOT possible to use the memories in slots 1, 2 with this Zalman without bending the fins? Oh god... I just got one today...
MSI and everybody recommend the memory at slots 1,2.

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Memory question on Arch x86_64. 2x2048 MB = 3950 MB?

I have a naive memory question for some knowledgeable folks. My machine has 2x2 Gb sticks which should total to 4096. When I do a free -m under Arch, it's only showing 3950. Is the remaining 146 reserved or..?
$ free -m
total used free shared buffers cached
Mem: 3950 422 3528 0 28 157
-/+ buffers/cache: 236 3714
Swap: 2000 0 2000

Thats a really good question and the result you get is normal as far as I know.
Part of it (a small part I believe) is used by the kernel, the rest of it, and this is where things are not so clear, is reserved as an agp apperture.
As far as I could tell (I have stumbled uppon that too) the problem seems to be that some bioses don't setup everything as they should.
The thing is that some devices can only handle 32bit addresses so their address is somewhere until the 4GB mark, because the bios doesn't setup the memory remapping correctly (sometimes the user has no way set anything related to memory remapping, this seems to be the case with some desktop boards and most notebooks/laptops). This memory remapping "problem" was anticipated and there are ways to properly handle that.
For some reason unknown to me (and most people that have stumbled upon this) many bioses don't setup (or allow the setup) of proper remapping. To add to the problem the kernel seems to reserve 128MB of agp aperture by default even if you don't have an agp card, this reserved address space falls in the first 4GB of addressing space therefore stealing you some memory.
I have tried to regain those MB, I have tried to recompile the kernel with a different config and I've tried several kernel boot parameters and the only thing I could regain was 64MB if I recall correctly. I can't find now what I have added to regain those 64MB, I didn't keep that option in the kernel line, 64MB were not worth the possibility of having problems later on.
I know its a pain to have that voice in the back of your head telling you that there is some memory that is being wasted, specially if you have tried a 32bit kernel with support for 64GB of address space and got 4050 MB of usable memory, but just leave it as it is, it's not worth the time and the trouble.

Memory Question "4x1 Gig or 2x2 Gig?" what is faster?

Memory Question "*4x1 Gig or 2x2 Gig*?" what is faster?
I'm still don't know if witch to choose?
4 times 1 gigabyte Ram Memory is cheaper but if I choose for 2 times 2 GB Ram I can always beef it it later.
And is my memory faster if I'm using 4 slots with 1 gig over 2 slot with 2 gig?
I'm asking this question because I think using 4 times the memory bandwidth will be faster?
http://www.janmaartendewit.com

Hello Jan
Welcome to Apple Discussions
The iMac (Late 2009): Installing or replacing memory article and your User's Guide are pretty clear, they both say that +"You can use 2 GB or 4 GB RAM SO-DIMMs of 1066MHz DDR3 SDRAM in each slot."+ and not 1GB modules. > http://support.apple.com/kb/HT3918
To upgrade your ram you will want at least 2 more 2 or 4GB modules and add that to the current 2 x 2GB of ram. > http://eshop.macsales.com/shop/memory/iMac/DDR321.527
Dennis

875p FIS2R Memory Question

I just bought the 875P FIS2R board, but haven't powered it up yet since I still haven't received the memory. I also got the P4 2.4 GHz 800 FSB CPU. The MSI web site directed me the the Kingston memory site that recommeneded the KVR400 series DDR memory with a CAS latency of 3, so that's what I bought. I noticed in the manual that the only settings for CL are 2, 2.5, and auto detect from the stick's NVM. My question is, will I be able to use this memory running with a FSB of 800 and a CL of 3? Will auto-detect actually adjust the CL to 3, or are the only options 2 or 2.5? I know I will take a performance hit, but I'm not concerned about that right now.

Djfuzz,
CAS Latency of 3 is settable in Manual Timings when Perfomance Mode is set to Slow (or via your obscure method!!!), but if you then boot Windows and check timings (with something like CPU-Z) you will see it is actually 2.5!!!!!
dRfELL,
Let's bloody well hope they fix it in a future BIOS release, 'cos my memory is rated at 500 MHz and cost over £500 ($800) and I can't even use it past 460 MHz because of this!!!
But in reality, we're already on BIOS rev. 1.9 and from what I can gather, it's been a known problem for quite some time - so don't hold your breath!!!

K9A Platinum memory question

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vonbarter,
I did find two options which meet your criteria:
OCZ S.O.E 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 667 (PC2 5400) Dual Channel Kit Desktop Memory $190 after MIR
OCZ Gold Series 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 667 (PC2 5400) Dual Channel Kit Desktop Memory $200 after MIR
Take Care,
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Memory question crucial/owc/Apple

Ok, first off let me clear the air and say that I've been a long time crucial user in all of my computers and have not been disapointed but now with my impending promac arrival, well not until septemeber. I'm not so sure about crucial
I read someone (I failed to recall where now) that apple recommends its memory modules for the MacPro because of the heat sinks it uses is designed specficially with the cooling archtecture of the MP. I understand that OWC (and Crucial) has heat sinks on theirs but they may not be the same.
Second, while crucial appears not have any memory for the MP yet they have not that much cheaper in prices then apple lately. A dark horse in this is OWC, while cheaper I worry about the heat sinks and of course quality.
I'm a big believer in you get what you pay for.
I'm really only interested in getting an additional gig to bring the MP up to 2 gig. I'm a medium Aperture and low to medium photoshop user. I found 2 gig to be the sweet spot on my PPC mac's but I understand that may not be the case for intel macs. Budget is the over-riding factor for only getting a single gig.
Apple prices:
1 gig kit 300,
2 gig kit 700 (yikes)
OWC:
1 gig of ram 419 (buying the 2gig kit and trading in the install 1gig for a credit of 140) I don't seem to see a 1 gig kit at owc.
2 gig 559.
crucial
1 gig ????
2 gig???
they appear not have memory for the MP yet.
Any advice or suggestions would be welcome. Budget and peace of mind is of high improtance. I generally have to pay a little more (key word little) for peace of mind and get crucial but they seem to be getting expensive. When I purhcased my mini, their memory was the same price as apple's so I had apple install the memory (it didn't help that the mini's memory isn't considered user resplaceable) as a CTO option.
Mike
Mini MacBook Mac SE
Mini MacBook Mac SE

AccelerateYourMac has been on top of this story (OWC sponsered site) with notes from Crucial that they needed to do more work and they do have a close relationship with Apple (obviously).
Micron has had DDR2 'bleeding edge' memory in the 800 and 1000MHz range for the serious gamer / enthusiast / OC'er crowd.
Someone did get some early Crucial RAM before they stopped shipping, and it worked, but noted that the top riser seems to be get more airflow and run cooler.
Do you remember when the G5 first came out and what the prices looked like this time 2003? Initial prices of $400 per GB as I recall before dropping to $120 and below. There were also some problems the following summer when the next gen G5s came out and there were some compatibility issues mixing from different vendors or sources, or even different batch variations from the same source. Or that some RAM that seemed to work fine previously "broke" or caused trouble ("marginal RAM"? though more a catch-all phrase).
Also, OWC was carrying more expensive Samsung for the last year and is now carrying some Micron labeled chips as well as "OWC label" (house brand?).
I'm waiting for Oct/Nov for things to settle out and for any 'rev 2' changes, as well as avoiding early production problems.

865pe neo2-p Memory question

HI all
Hope someone can answer me a question
I have a 865pe noe2-p mobo , i have just stuck in x 4 1 gig ddr400 mem modules
The Specs of the board state as per MSI site that this board can support 4 gig , yet my bios is only reporting 3.1 gig
Mem modules are showing as dual channel in bios
Bios version is up to date ver 3.a , as per live update
CPU intell celeron 2.53 ghz clocked up to 2.92 ghz
4 gig Kingston DDR400 mem
Nvidea 6600
sata hdd's , 500 gig and 160 gig
is there something i am missing here to enable this board to see 4 gig of mem as per the specs of the board
I am only running XP and fully understand the SW limitation ,
I do not see this as being issue with SW , this seems to stem back to the board not picking the correct amount of ram installed
Has anybody else see this ?
Is there a resolve ?
Thanks in advance
Tadkin

Quote
is there something i am missing here to enable this board to see 4 gig of mem as per the specs of the board
I am only running XP and fully understand the SW limitation ,
I do not see this as being issue with SW , this seems to stem back to the board not picking the correct amount of ram installed
The software limitation you are talking about is only one side of the coin. The memory adress decode space of the chipsets memory controller is restricted to 32bit addressing before software (operating system) ever comes into play. Part of this adress space needs to be reserved for other system devices and cannot be used for system memory addressing. No mainboard featuring an Intel 865PE Chipset was ever (or will ever) be able to fully address 4GB of system memory. This is a chipset rather than a board or BIOS limitation. It is not even a problem but a hardware restriction that was only overcome severl chipset generations later (Intel P965 and 975X to be precise).

Memory question

I have a couple of questions about memory.
1. I have Corsair TwinX XMS PC3200 2x1024mb. settings at corsair are 2.5-3-3-6 It shows up in speedfan as:
FSB-DRAM................. CPU/14
CAS# Latency............. 3.0 clocks
RAS#to CAS# Delay..... 3 clocks
Ras Precharge...............3 Clocks
Cycle Time(tras).............7 Clocks
Bank Cycle Time(trc)......10 clocks
DRAM IdleTimer.............16 clocks
I just want to run it at a better speed to get the most out of it.
2. Plus my MB supports DDR266/333/400 modules. Does that mean I can't run the 433/500/533/550?
When I started to overclock I had the DRAM set on 400 and with the OC it went to 424. with no problems. Then I had to drop it to 333 to keep OCing and got the DRAM up to 198 running stable. I had to drop the FSB so eventually the DRAM went to 184. I ran Sandra with the 424mhs setting and the 184mhz setting and the 184mhz setting was really a lot quicker...so I stayed there.
Now how can I get better speeds out of the memory? Would it be better to buy a different memory to achieve my goals?

MR,
You Stated :
1. I have Corsair TwinX XMS PC3200 2x1024mb. settings at corsair are 2.5-3-3-6 It shows up in speedfan as:
FSB-DRAM................. CPU/14
CAS# Latency............. 3.0 clocks
RAS#to CAS# Delay..... 3 clocks
Ras Precharge...............3 Clocks
Cycle Time(tras).............8 Clocks
Bank Cycle Time(trc)......12 clocks
DRAM IdleTimer.............16 clocks
I just want to run it at a better speed to get the most out of it.
The figures you posted above look more like figure you would have gotten from the memory Tab in CPU Z. Can you confirm this and also post all figures you get form the SPD Tab in CPU Z regarding your RAM. If you RAM setting are set to Auto in BIOS then the above figures are really your SPD readings that were applied by your BIOS Auto RAM setting feature. The CPU Z SPD read out will confirm this. If this is the Case then you have Corsair TwinX2048-3200 Kit (3-3-3-8) vice the TwinX2048-3200C2 (2--3-3-6*) with the asterix annotated as [* These parts support 2-3-3-6 latency on Intel platforms, and 2.5-3-3-6 latency on AMD platforms.]. Double check your product number on your RAM and pay perticular attention to letters and/or numbers after TwinX2048-3200....> Check result against listing the TwinX matched pair memory listing here http://www.corsairmemory.com/corsair/xms.html
Plus my MB supports DDR266/333/400 modules. Does that mean I can't run the 433/500/533/550?
You could likely use memory up to DDR 500 on your board if you wanted to OC and leave ram at 1:1 ratio. Higher memory would be wasted money.
Good luck,

Memory Question for G4 Cube

In accordance with recommendations on a previous question here I have ordered OS 10.4.6 from Apple to install on my Cube. The Apple rep said it would work with the 384 MB ram I now have in the computer. I think I will add more memory though and the Apple rep advised I visit <www.crucial.com> to get it as Apple no longer stocks memory for the Cube. The spec for memory in the Cube manual says to use "PC-100" synchronous DRAM (SDRAM). The crucial.com site recommended a 512MB chip that says it is "PC-133" and implies it will work, guarantied. Will it?
It will be 2 weeks at least before Apple will ship the OS 10.4.6 package as it is on backorder. I know I will have some questions on installation when I get it.
JTB

PC133 RAM is usually less expensive than PC100. The cube has 3 slots, and the max you can install is 3 x 512 megs. If all three slots are already filled, you will have to remove one of the modules and replace it with the 512 you plan to buy. I would personally stick with PC100, particularly if the modules that will remain are PC100.
I usually buy my RAM from Ramdirect. Their prices are competitive, and they have always stood behind what they sell - there is a lifetime guarantee. I will recommend them without reservation.
http://www.ramdirect.com/vcom/index.php?cPath=1723
(I have no relationship with the company, other as a satisfied customer.)
Installing the RAM is dead easy, but you might want to download a service manual.
http://cubeowner.com/manuals/cubesvc_man02.pdf

Memory Question for min 2011 iMac

I want to add more memory for my imac. I done the searches but I'm getting bits and pices of info so here are my questions ( I have 8gb of memory installed now. 2x4 gb)
1. how much can i put in the 16 apple says or 32 ive read? (or any inbetween)?
2. Apple sells the memory on their website ($200 is a lot for 8 gb) where can i find the same for less? ie. waht's the best memory for my imac out there?
3. It looks esy to install. Is it?
Thanks!

Your first line is just incorrect. It is what Apple TESTED the unit with when it was first in production.
Apple recommends only 8Gbs in both the late 2011 model MBPs and even on the Mid 2012 model MBPs when it can actually take 16GBs of RAM with No Problems. Other manufacturers do that also. I have a Dell E6420 that Dell and even Crucial state that it can only take 8GBs. I have 16GBs installed.
To order that 16GBs from Crucial I had to punch in my late 2011 MBP as the model. When I used the Dell E6420 it came up with 8GBs. The package I got from crucial stated Mac Memory. Works fine in my Dell as the Mac and Dell use the Same Intel Chipset.
It is up to the Intel Chipset as to how much memory can be installed. If the intel chipset supports 16GB you can use 16GBs. if it supports 32GBs you can install 32GBs
ComputerFixer wrote:
1) I would stick with the 16 apple says. While others may have gotten it to work on 32, there is a reason apple recommends 16.
2) Crucial and OWC are the best memory you can find. If you are looking for cheaper memory, PNY may work as well, but I would highly recommend using Crucial memory.

Memory Question - Help!

I just started trying to import footage from a camera to my Mac. While my laptop doesn't have a ton of spare memory, I have an external hard drive that does. Question: how can I set iMovie HD 6 to use the connected external hard drive's memory rather than the memory from my laptop?
I've got about 60min of footage - but, right now, I can only import about 7min.

What you're talking about is not memory ..you're talking about hard disc space.
(Memory is the little chips inside the Mac which hold the current program which is running, etc. Hard disc storage is where you store or Save things, such as video clips and entire video projects.)
When you start a new project you'll see a window like this:
Where it shows "Where:" and the choice 'Pictures' in the little pic above, if you click on the arrowheads alongside whatever's currently showing ..e.g; 'Pictures', which is probably 'Movies' in your case.. you can then browse all the folders and hard discs on your Mac, and you can choose to store the new project on your external disc ..simple!
NOTE: Your external disc MUST be formatted as 'Mac OS Extended', and preferably be connected by a FireWire cable, not USB (..USB is too slow for sustained video transfer).
To format the external disc as 'Mac OS Extended', use the Finder to go to Applications>Utilities>Disk Utility, select the hard disc's name then click the 'Erase' tab and choose Mac OS Extended as the format for it. CAUTION: This will erase anything already on that external disc ..so if there's anything precious there, copy it across to your internal disc first.
After formatting as Mac OS Extended - it takes just a few seconds - you can then use that disc for your iMovie projects.

Memory question (yes, another)

ok, i have ddr memory rated for 200mhz, and the fsb of my processor is 333 mhz.
i was reading a thread on a corsair forum from a guy with my exact motherboard
AND memory, but a slightly lesser processor (a-xp 2500 vs a-xp2800, both barton333)
he says:
1. Motherboard is as started above: MSI K7N2 Delta2-LSR
2. Processor is Athlon XP 2500+ Barton (333 FSB)
3. CPU multiplier is unlocked so I can alter RAM to 200FSB and lower multiplier to
ensure that speed is the same.
4. Running Dual Channel mode.
i know a 1:1 ratio is best, but to GET such a ratio, is there any practical difference
between:
a) setting the memory to 166 and the ratio (manually) to 1:1
b) setting the memory to 200 and reducing the multiplier, as he's done.
i assume by multiplier he means the fsb:dram ratio - please correct me if i'm wrong.
thanks!

Quote from: Grayone on 27-December-05, 03:39:37
Having the cpu multiplier unlocked does nothing to affect the memory speed.
after closer reading, he says he's running at 2.3 ghz, by changing his processor to
200mhz * 11. something i definitely don't want to do even with my 2800!
with that in mind, i think he meant in terms of upping the processor to match
the memory (or buying faster memory to match his already oc/d psu) - and my
question is moot, for my purposes. (feel free to delete!)

Memory question for a new user

This is probably a SIMPLE question and the answer is likely right in front of my face but I cannot seem to figure out how to find it.
How do I check to see how much memory I have available on my Macbook air? I have downloaded several large games and such, and I just want to see what my memory is looking like, and how much is still available? Where do I go to find that?
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If you do mean physical memory then launch "Activity Monitor" in utilities folder and you can examine the amount of actual memory currently in use. But as the previous poster mentioned unless you are RUNNING any game it won't matter to your memory use, but your hard disk use.

Memory Question - is this normal?

I just got my new MacBook yesterday. Built week 24. I got 1 GB of RAM on it.
I just restarted it and it is charging the battery (after calibrating it). I have not run anything on it since it restarted only the dashboard because I have installed a winglet called "IStatPro" which shows the following:
Memory:
Wired = 136MB
Inactive = 138MB
Free = 650MB
Active = 77MB
My question is: What is this big chunk of Inactive Memory? it seems to grow after I start running apps... and stays there. Is there a way to clear it?
I am thinking of upgrading to 2GB of RAM soon, but I want to get this issue taken care of first.
Thanks!

"Man! I was blind before."
...but now you can see - LOL!
We all went through the learning curve. Funny thing is that once you are more familiar with the way Macs do things, you will see the Windows way as being wrong.
It is all a matter of perspective.
Be sure to stick around here Omar. You have discovered one of the best things about being a Mac user here in these forums and we'd love to see you posting often. You'll be answering questions before you know it.

Memory Question about my K8N!

Right now I am using 2 Kingston HyperX DDR400 memory. The boards are 512Mb doublesides... If I was to add anotherboard same brand and speed but 1gb (for a total of 2gb) will the memory run ad 440mhz or drop to 333mhz? Better question, will this work!

what stepping is your processor (co or cg), supposedly co's have serious problems with 3 double sided sticks, cg may have better luck. If you look at your processor code, if it ends in ar or ax, it is a cg, ap is co.

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