How is memory typically mapped to the different chips on a DIMM, and what are the typical timing characteristics, broadly speaking? For example, are bytes/words whose address is i mod 8 typically on chip i? In the case of reads, are results returned first from chip 0 (after the RAS and CAS latencies), then promptly on subsequent cycles from each of the next 7 (or 15) chips? How about from other DIMMs on the same motherboard?
posted by espertus on Nov 15, 2009 - 3 answers

RAM configurations for the new iMacs - permutations galore! [more inside]
posted by VikingSword on Oct 30, 2009 - 12 answers

Memory upgrade for Intel Xeon Mac Pro? [more inside]
posted by austinlee on Oct 22, 2009 - 7 answers

I have a 2001 Dodge Ram that I use when I need to haul things. It runs great, except in the morning after it rains. The truck will not want to rev beyond 1800-2000rpm. If I idle it or drive for for about 10 minutes the problems go away. Any ideas? [more inside]
posted by geoff. on Oct 21, 2009 - 9 answers

My new computer freezes or reboots when I'm pushing it (e.g. encoding video). Can you help me figure out which part is bad before I start having to ship things back to newegg and pay restocking fees? [more inside]
posted by chndrcks on Sep 30, 2009 - 19 answers

What kind of RAM does my PC need? [more inside]
posted by Wild_Eep on Sep 8, 2009 - 7 answers

I'm looking for recommended vendors for high performance computing workstations. I need a workstation with 32 GB or more of RAM for image analysis; my computational needs are more modest, but a couple decently fast cores would be nice (my application parallelizes well). I'd like to spend around $5k if possible, but could go up a little if necessary. I'd prefer not to build a system.
posted by pombe on Sep 3, 2009 - 9 answers

Is there a general formula for determining the relative value of RAM speed versus RAM quantity? More specifically, am I better off with 2GB at DDR400 in dual-channel mode, or 2.5GB at DDR333 in single-channel mode? [more inside]
posted by Partial Law on Aug 17, 2009 - 9 answers

Blue Screen of Death hell and I don't know where to start... is it software? Hardware? HDD? RAM? Drivers? Any pointers would be appreciated! [more inside]
posted by ClarissaWAM on Jul 8, 2009 - 21 answers

I installed new RAM, and blew my power supply. Now, after installing a better power supply, the same symptoms which led to the broken power supply are happening again. What is going on? [more inside]
posted by edbyford on Jun 23, 2009 - 10 answers

I'm in the market for a new laptop. Should I get a PC or Mac? What specs are important for me to look at when making a decision? [more inside]
posted by reenum on Jun 2, 2009 - 31 answers

I've upgraded my video card. Games run great (for the most part), but windows itself runs slower. What do I do? Add more RAM? As always, more inside. [more inside]
posted by Oktober on Jun 2, 2009 - 5 answers

I have Leopard and Windows 7 (7057) installed on my Late 2007 (possibly older, I got it refurbished) Macbook Pro 15". My problem is, every time I boot into either OS, I get a kernel panic or BSOD respectively. The fact that it happens in 2 different operating systems makes me almost positive that it's a hardware problem. Unfortunately, I don't know very much about computer hardware, so I don't really know what to troubleshoot first, and I don't want to void the warranty by opening the case (I plan to take it to the Apple Store if nobody here can solve the problem). Specifically, either operating system will crash about a minute into booting up. I don't think the problem can be too serious because everything graphically looks fine and all my files are intact. This leads me to think that maybe it's a RAM problem, and that it runs out of memory and crashes during bootup. [more inside]
posted by N2O1138 on Apr 30, 2009 - 18 answers

Which is better, one 4GB stick, or two 2GB sticks of DDR2 RAM in my Laptop? [more inside]
posted by brenton on Apr 20, 2009 - 8 answers

Is DDR2 PC2-6400 memory backwards-compatible with a laptop that uses DDR2 PC2-5300? [more inside]
posted by DB Cooper on Apr 10, 2009 - 7 answers

New Asus P6T motherboard only showing 4GB of RAM in BIOS when I have 6 installed. :( [more inside]
posted by PetiePal on Mar 14, 2009 - 7 answers

How can I find out if I'll get more of a performance boost in my desktop PC by adding more RAM or replacing the processor? [more inside]
posted by gottabefunky on Jan 19, 2009 - 22 answers

Memory replacement on my laptop is driving me crazy. [more inside]
posted by HauteMama on Jan 6, 2009 - 18 answers

I have a shoebox full of RAM sticks that I want to make some art out of. What should I use to soak the stickers off? [more inside]
posted by bartleby on Jan 5, 2009 - 11 answers

ECC memory on a personal Linux server? [more inside]
posted by cowmix on Jan 1, 2009 - 12 answers

Oh little RAM, where are you? 512MB module doesn't want to play along new 2GB module. [more inside]
posted by Iosephus on Oct 23, 2008 - 11 answers

Why is there no such thing as too much memory? [more inside]
posted by abcde on Oct 19, 2008 - 18 answers

Windows XP PC crashes and burns when four identical sticks of RAM are installed but Memtest86 shows no errors. [more inside]
posted by shinybeast on Oct 16, 2008 - 7 answers

Can I upgrade my ram to 2GB? [more inside]
posted by twelve on Oct 2, 2008 - 4 answers

Adventures in RAM upgrades that screw up my whole computer. ugh. help? [more inside]
posted by Kellydamnit on Sep 4, 2008 - 15 answers

Slightly dynamic .ram files in IIS? [more inside]
posted by dirtdirt on Aug 22, 2008 - 5 answers

To my dear friends of the hive mind: Yours truly is trying to upgrade RAM memory and running into problems with incompatible chips, slots, or both. [more inside]
posted by mjklin on Aug 17, 2008 - 11 answers

Would this OS/RAM/VM trick work, you think? Linux seems to allow this PC mobo double the RAM XP shows as possible; can I VM XP on a Linux host and split the RAM between the two? [more inside]
posted by penciltopper on Aug 1, 2008 - 10 answers

Laptop is giving up the ghost. Ram? HD? Videocard? Full explaination of symptoms inside, help me get it at least to a place where I can back it up. [more inside]
posted by Iteki on Jul 24, 2008 - 10 answers

I bought a new motherboard and a new video card, and now my computer beeps and won't boot to Windows. Which one is to blame? [more inside]
posted by Who_Am_I on Jun 6, 2008 - 14 answers

Games PC CPUFilter: Is it worth upgrading from an Athlon64 3500+ Venice to a 4000+ San Diego? (plus a bonus question on 3GB RAM in XP and dual channel memory). [more inside]
posted by boosh on May 30, 2008 - 12 answers

Where can I find RAM for an old Sony Vaio PCV-7762 desktop? [more inside]
posted by Mr_Chips on May 18, 2008 - 4 answers

Help me flip the switch that keeps my RAM freed up on my pain-in-the-backside MS Vista O/S machine! [more inside]
posted by tosteka on Mar 26, 2008 - 34 answers

Should I be worried that I always seem to get "Page Outs" from my MacBook's RAM? [more inside]
posted by kchristidis on Mar 25, 2008 - 17 answers

Where does RAM bank 1 (or A) live on a Dell Latitude D820? [more inside]
posted by mojohand on Jan 21, 2008 - 7 answers

Potential upgrades to my aging desktop system- some advice from geeks would be greatly appreciated. [more inside]
posted by baphomet on Jan 21, 2008 - 14 answers

I've got 32bit windows XP. I also have 8 gigs of Ram. The windows specs say it'll only recognize 4 gigs. Other than converting to windows vista, is there any way to get my machine to recognize and use the other four gigs of ram?
posted by rileyray3000 on Jan 3, 2008 - 17 answers

Is PCIe 1.x x16 a viable technology for a gaming PC intended to last for the next 3+ years? What about DDR2? [more inside]
posted by cyrusdogstar on Dec 27, 2007 - 10 answers

I recently added 2 gigs of RAM to my PC but Windows Task Manager/System properties do not recognize it, while BIOS and Crucial.com do. What could be causing this issue? [more inside]
posted by bostonhill on Dec 20, 2007 - 11 answers

How much memory can my computer hold? My computer specs: Dell XPS 600 OS: WinXP Professional 5.1 SP2 (Build #2600) CPU: Intel Pentium D , 2.99 GHz, 1024KB Video: NVIDIA GeForce 7800 GTX (1920x1200x32bpp 60Hz) I went on crucial.com and their scanner said my computer can have up to 8 gigs of memory but a friend of mine told me that XP can actually only hold 3 gigs of ram. How true is this? I currently have 2 gigs of ram and I was looking to go as high as 5 mainly because I work with After Effects a lot and rendering is a pain in the ass. Thanks in advance everyone.
posted by cheero on Nov 25, 2007 - 14 answers

I'm the proud owner of a new Intel iMac, a 2.4 Ghz with 2 gigs of RAM, and I'm having a dickens of a time trying to edit my 26 minute wedding video in iMovie '08--namely it's as slow as the molasses in January. I'm not making a feature film here...what gives? [more inside]
posted by zardoz on Nov 22, 2007 - 6 answers

Best bang for $300 total: Motherboard, CPU and Memory. [more inside]
posted by |n$eCur3 on Nov 4, 2007 - 17 answers

Which would be more beneficial for a Photoshop user: dual-display + more RAM, or a new iMac with a faster processor? [more inside]
posted by blastrid on Nov 2, 2007 - 18 answers

I have a lengthy question about comic-making, PhotoShop, and aging computers. [more inside]
posted by COBRA! on Sep 19, 2007 - 23 answers

How do I fix it if Vista is causing my new off-brand laptop to choke while playing DVDs? [more inside]
posted by letahl on Aug 22, 2007 - 4 answers

Is it worthwhile to upgrade the RAM on a six-year-old iBook? [more inside]
posted by donpedro on Aug 9, 2007 - 16 answers

Does such RAM exist in a single 2GB DIMM: 200-Pin DDR SO-DIMM DDR 333 (PC 2700) Notebook Memory? [more inside]
posted by drinkspiller on Aug 2, 2007 - 6 answers

BSODFilter: I tried to install a RAM upgrade in my girlfriend's Dell Inspiron 1100 laptop, and got nothing on screen after powerup. So I replaced the old DIMM, and got the BSOD -- the file that was missing was a driver for the Intel video adapter. Long story short, it's still not working. [more inside]
posted by YoungAmerican on Aug 2, 2007 - 10 answers

I need help in identifying this RAM module. Ideally I would have taken a picture and just posted it here but I'm one of the few people remaining who don't yet own a digital camera, so I'll just note down what's written on it and hope that someone can make sense on if it. [more inside]
posted by sk381 on Aug 1, 2007 - 5 answers

Computingretardfilter: I've got a stubborn old desktop that I don't know what to do with. "Memory test failure", it tells me. [more inside]
posted by saysthis on Jul 28, 2007 - 16 answers