Dwight's also posted his, holiday PC spec list, which is also a good read.
If you're adding big graphics cards with larger amounts of RAM (or using Crossfire or SLI) then you'll need to be seriously thinking about a 64-bit OS much sooner.The confusion arises because people take the joanna newsom book of right on term memory to mean RAM, and this can lead to some expensive mistakes as people buy PCs loaded with 4GB of RAM and a 32-bit OS, only to later realize they can't 40k necrons codex pdf make use of all the RAM.There's not a 1 to 1 relationship between graphics memeory consuming system RAM, but the larger the memory, the more the card sets aside for itself.Today Dwight Silverman ran a great piece on TechBlog which examines whether folks buying a new PC are best sticking with 32-bit Vista or making the leap to 64-bit Vista.You can see a giant memory hole from 8FEF0000 to ffffffff in this Meminfo output from the system after I installed 64-bit Windows.Enterprise: 192GB, ultimate: 192GB, these limits are similar to those for Vista editions, expect that Vista Enterprise and Vista Ultimate have had their upper limits raised from 128GB to 192GB.Dwight says: Vista x64 can use more memory than the 32-bit version, which is limited to 4 gigabytes.Less memory than this and you're fine with 32-bit, but any more memory and you need a 64-bit OS to make advantage.The 4GB limit refers to total addressable memory space and not just the RAM installed.Build your own "Ivy Bridge" desktop.
If you're building a Core i7 system then it's quite easy (if you have the cash!) to exceed this limit.
Here are the upper RAM limits for the different editions of Windows 7: Starter: 8GB, home Basic: 8GB, home Premium: 16GB, professional: 192GB.
It's a good piece but there's one bit that I feel deserves some clarification.
The problem with this statement is that it gives the impression that the cut off point when it comes to memory lies at the 4GB mark.Note : Wondering how we arrive at that 4GB limit?You can buy graphics cards fitted with 1GB of RAM, and if you wanted (and had the spare cash!) you could fit three of these into a system.It's different for 64-bit: 264 18,446,744,073,709,551,616 18,446,744,073,709,551,616 / (1,024 x corel paintshop pro x5 serial 1,024) 16EB (exabytes).Here's the math for 32-bit systems: 232 4,294,967,296 bytes 4,294,967,296 / (1,024 x 1,024) 4,096 MB 4GB.So what this means is that the realistic upper RAM limit for a 32-bit OS is more like 3GB.Windows 7 users are more exposed to ransomware, says Microsoft.It's a total made up of system RAM, graphics RAM, PCI memory range, acpi and a few other bits and pieces.And if you think that your system RAM is the only significant factor, think again.For example, I purchased one from a boutique gaming rig company that came with 4GB of RAM and two 1GB video cards.Dwight also suggests Intel Celeron CPUs at the lower end, something which I would now avoid.