Dell 1520 Questions ??

Hi i would like to buy a dell 1520, but i have some question...
-First i wanna buy 4gb ram from newegg but i am not sure that which one is working with dell 1520 good?Is dell 1520 motherboards capable with 4gb ram? Can you give me some advice?? here is the link for rams..
-Dell offering 3gb ram and they said its dual channel but i heart its not making too much diffirence than 2gb ram. is it true?
-is 7200rpm harddisk neccesery? or 5400 is enough?
-and for jack problem, is it happen with both sound card or saund blaster is better?

Please help me guys couse im really in trouble to customize my notebook.. thanks!!!

My plan is:
Intel® Core™ 2 Duo T7500 (2.2GHz/800Mhz FSB/4MB cache)
High Resolution, glossy widescreen 15.4 inch display (1440x900)
256MB NVIDIA® GeForce® 8600M GT
1GB Shared Dual Channel DDR2 at 667MHz
250GB SATA Hard Drive (5400RPM)
Intel® 3945 802.11a/g Mini-card
Integrated Sound Blaster® Audigy™HD Software Edition
2.0 webcam,bluetooth

After discount coupon: its 954$ inc. tax+s&h

 

If you're gaming get 7200rpm. I would get at least 2gb, although I myself am using only 1gb.

 

4GB is supported... I'm running it now!

 

Use NewEgg's memory configurator:
http://www.newegg.com/Product/ProductConfigurator.aspx?plf=32&category=17&name=Memory-Configurator

I intend to get 3 or 4GB because I want to avoid disk caching and I want to take advantage of Vista's prefetching to avoid programs loading from the hard drive (except when booting). I'm no expert, but I think few people need it unless they edit photos or video, or unless they are impatient, can afford it and don't mind sacrificing some battery life.

Again, I'm no expert, but I intend to get 7200 rpm. The hard drive is any computer's bottleneck. 7200 rpm is what desktops use. It is faster, especially when booting or loading. Again, get it if you are impatient or your time on the computer costs you money, and you can afford it and don't mind more heat and less some battery life. It won't improve your gaming, but will load levels faster.

You can compare laptop hard drive speeds here:
http://www23.tomshardware.com/storage25.html

Fuzzy

 

4GB is supported, but you can only take full advantage of it if you're using Vista/SP 64 bit. Which, if I recall correctly, Dell stopped supporting just a while back?

 

thanks for answers, i wanna buy 4gb couse for 3gb i have to pay 250$ to dell. instead of this, i wanna buy 4gb rams for around 170$, so its higer and cheaper. i know that i can use only 3.5gb ram with 32bit vista but anyway its gonna be better for future.. i decided to buy Patriot 4gb ram (this one) i hope its gonna be easy to install new rams. i heart that one of ram is under keyboard...

And last question: is this notebook has santa rosa platform?

 

If you intend to make full use of Vista's prefetching than more memory would only be better with no end in sight for it (with current laptop limits of 4GB) since it would allow you to cache MORE and would last LONGER (as the cache would need less refreshing from the drive AND would endure inevitable memory usage increases over the lifespan of the machine).

Also, how would 4GB of RAM have a major impact on battery life? The requirements to power 512MB of DDR2 is the same to power 2GB of DDR2 and you need two sticks of them to make dual channel so powering 1GB or 4GB (in Dual Channel so two sticks) should be identical... You'd actually SAVE battery life with the increased prefetch cache as a hit to the HD would cost a lot more in power.