Replacing DDR2 RAM with DDR3? Timings?

Been wondering about this for awhile now, my laptop "to be" has 4GB DDR2 800MHz Memory, and I was wondering is it possible to insert DDR3 RAM? and would I get a worthwhile performance boost?

Is an increase to DDR2-1066 even worth it?

I've also noticed while looking at RAM sticks online, they have a timing, the lower the timing the better the RAM correct? can you change the timing on Laptops and is it difficult/worth the hassle?

Thanks!

 

ussually u cant upgrade to dd3 simply bcause the mobo wont allow it... i.e sager NP2096 wont allor dd3 ram sticks (i asked to sales rep).
ive read that even 667mhz vs 800mhz ram wont make a difference, since the fsb of processor and hdd speed are bottleneck.

 

I was thinking that, and DDR3 can be costly!

You reckon a speedier DDR2 isn't worth it either? in theory it looks good but so does the PS3!

Can anyone school me on timings aswell? lol

 

You can't upgrade to DDR3 mainly because it won't fit into the slot. Same with desktops, and I'm sure it's the same with notebooks.

 

Ok, can you explain timings?

 

It's hard to compare timings. Between the same type of memory ie. DDR2 CAS 4 and CAS 5, the lower the timing the better. While DDR3 has higher latency, the clock cycles by which they are measured are shorter so the actual time interval is equal to or shorter than DDR2 latencies. The higher CAS latency is compensated by higher bandwidth, thereby increasing overall performance.

 

So, is it possible to alter the timings, ie make DDR2 quicker?

 

I wouldn't worry about trying to speed up the memory, it will have little effect on system speed. Just keep in mind that your chipset is a P965m, which only supports 667MHz RAM natively. And yeah you can do a lot of tweaking you can do with your memory timings, but I wouldn't recommend it. There is a lot of math, effort and stability testing involved, and the only benefit is usually a few milliseconds faster on an hour long benchmark.

 

Ah cool, guess I'll make do with what I have, thanks everyone!

 

You'd be surprised how little of an effect faster RAM has on a system. One time I pushed my DDR2 800 4-4-4-12 up to 1200 5-5-5-15, and there was almost no effect. Since then, I left it at 900 4-4-4-12.

 

On desktops, not notebooks, you can sometimes adjust timings. However, if you adjust them too low data corruption will happen.

Messing with timings just is not worth the risk for a marginal increase in performance.

 

DDR3 are not worth it right now for desktop in my opinion...they are costly and have higher latency although greater bandwidth....they are better for laptop because they consume a bit less power