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Sequential Reads on HD are where the hard drive seeks to a data file and starts reading and does not require the head to seek until done. This would only be the case for uploading 1 file (or more if they were lucky enough to be contiguous but that doesn't tend to happen in real life) be it 1KB or 400MB the read would be sequential.

4k Random read speed is the speed a drive can read different 4K files randomly placed on the disk. The php,html,css files etc are all around 1-4K and there are 100's of them, an update will match them against files on the server, then upload them. This scan takes the files in the order they are in the file structure which is not the order they are on the disk. This means the read is random i.e the seek head must move to a new location for each read. After the scan the upload will also be random 4k as again the files are 1-4K and not stored sequentially one after the other on disk.

But as discussed before this is all rather moot as only the fastest bleeding edge broadband nudges ahead of the 4k performance of an HD. But nice to know.


ps
Reports of the 100MB service have been around 94-98MB down and 9MB up :)

Most people would be uploading files like photos and videos. Those are all large files, hence sequential reads. Even if you had a thousand 1KB CSS files, you would only be looking at 1MB, which is nothing. Small files don't take a lot space and that's why uploading them won't take much time, even with a hard drive. It's the growing media files which require a lot bandwidth, but luckily HDs have no effect on them.
 
I really don't think Ivy Bridge is going to make that big of a difference when it comes to battery life; CPUs are just one component to a computer and the power consumption of Ivy Bridge isn't going to drop enough to make it 10-11 hours UNLESS they get rid of the optical drive and throw in a bigger battery.

I think overall though this prediction is pretty good. AMD 7xxx series is going to blow 6xxx out of the water. 6xxx was basically just optimized and overclocked 5xxx series whereas 7xxx is totally new architecture on a 28nm process, making power consumption and heat a lot less of a factor making AMD able to clock the speeds A LOT higher than before.
 
I guess that depends on your setup. If your swap file has gotten to about 50 GB, then it might be a problem.

Do you use a web browser? Then you have memory leak issues of one sort or another. Correct me if I'm wrong, but I believe that just about every web browser takes up much more memory than is necessary.

I see where a 50GB swap file is an issue.
The question is whether the leaky browser gives the memory back if you close it. A reboot gives me a system that uses about 450 MB. When I use it for a while and then close all applications, the memory in use goes up to something like 550 MB. I figured it's mostly kernel_task and some helper applications that use a bit more memory over time. How bad can it get? I'm on SL btw.
 
making AMD able to clock the speeds A LOT higher than before.

Usually the shader count is increased, clock speeds stay about the same. It's the same as in CPUs - efficiency takes a huge hit when certain frequencies are overtaken, hence the amount of cores is increased instead.
 
Usually the shader count is increased, clock speeds stay about the same. It's the same as in CPUs - efficiency takes a huge hit when certain frequencies are overtaken, hence the amount of cores is increased instead.

Ah, but nevertheless, the efficiency saved in heating and energy consumption is a huge plus for AMD - and doesn't change the fact that the 7xxx series is going to use the 6xxx series to mop the floor.
 
Ah, but nevertheless, the efficiency saved in heating and energy consumption is a huge plus for AMD - and doesn't change the fact that the 7xxx series is going to use the 6xxx series to mop the floor.

Definitely. We are looking at similar bump as what Radeon HD 5000 provided over 4000 Series (new process node + architecture).
 
If that's true... Wow! Your 13 inch predictions sound incredibly decent. 7200 rpm HDD, quad core Ivy Bridge, Bluetooth 4.0, 10 hour battery life. That would be an awesome laptop for the price. :D :D
 
Apple will most definitely not put an optical drive in future laptop refreshes, it would defy the entire point of, for example, offering Lion install via their servers and launching iCloud - not to mention the industrywide investment in cloud computing. Remote storage and lack of physical media is clearly the direction in which the industry is heading.

In any case, optical drives don't exactly comply with Apple's philosophy in that they're are hugely bothersome, generate (relatively) enormous amounts of heat, and are loud as *****.
 
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