Which RAM package for my Toshiba R700?

I have a Toshiba R700 notebook (core i7-m620) with 4gb of RM installed and I want to upgrade to 8.

I don't know whether I should get pc3-8500 @cas7 or pc3-10600 @cas9.

Here are the two packages I'm considering - which should I get for best business applications performance?

8GB Kit (4GBx2), 204-pin SODIMM, DDR3 PC3-10600 upgrades for Toshiba Portege R700-S1311 Laptop/Notebook, CT1441009 from Crucial.com

8GB Kit (4GBx2), 204-pin SODIMM, DDR3 PC3-8500 upgrades for Toshiba Portege R700-S1311 Laptop/Notebook, CT1441017 from Crucial.com

thanks

 

Either one. The PC3-10600 will downclock to the same speed as the PC3-8500 anyway (and should end up at the same cas latency as a result) because of your processor (and it's integrated memory controller). I'd say get the cheaper one, but they're both listed at the same price.

 

What Judicator said. Unless you plan on overclocking your Toshiba, just get the cheaper 1066 RAM.

 

Just make sure you get the same speed as you are running now (using cpu-z)

 

thanks all

i just ran cpu-z and am told under the spd tab that the "max bandwidth" of the memory modules is "pc3-10700 (667MHz)"

on the "memory" tab the timings show a frequency of 532 mhz at rest (it goes up with activity), with a cas of 7.

are the two module packages essentially the same chips with different spd settings?

 

You need to get ram rated the highest speed it runs at otherwise you will be overclocking it.

 

If you buy faster rated RAM, it would underclock itself automatically. Though I haven't seen too many DDR3 800 RAM modules, mostly 1066/1333

 

on a perhaps more relevant note, I'm seeing all of your signature lines with your machines' configurations listed and pretty much none of you have more than 4gigs of ram. Do I even need more than 4? I'd like to max it out but only if i'll see a performance increase. so far, my machine is pretty fast for the work I do (the ssd makes a huge difference).

i dont and wont be playing games at all. mostly business apps and some media center stuff (i have this laptop docked to my plasma for use as a pseudo htpc when desired).

 

Some iX series use 1333 ram, he said his ram spikes above 1066, so buying 1066 would be bad.

 

From what I am reading the i7 dual cores don't support 1333 RAM. Only the quad core i7's do.

 

No, even running DDR3 800 (there is such a thing) would be fine.

 

You probably won't notice much of a difference, unless your business apps involve database or very large Excel files, or if you keep many applications running simultaneously (20+ tabs open in your browser, music playing, several open documents, etc.).

 

Even then the difference well be a few seconds...but time is money I suppose.

 

thanks all

 

First, if you do buy RAM, I would always suggest the highest spec'd version (especially at the same price!) as you will more likely be able to use it in a future system - or sell it off eventually. As noted, the higher spec'd RAM will downclock to match your specific motherboard requirements (not necessarily your cpu specs).

Second, depending on what you're doing with your system specifically, 8GB RAM might be very worth it for you.

This thread might help you decide:

See:
http://forum.notebookreview.com/har...ades/441911-8gb-vs-4gb-ram-faster-system.html



Good luck.