Noticeable difference between 533MHz & 667MHz DDR2?

[RockGuitarDude]

Thinking of getting 2 gigs of ram in my laptop. Is it worth spending more for the 667MHz DDR2 or should I go for 533MHz and save money?

 

[Brainonska511]

What kind of processor are you running?

 

[A5]

If your processor doesn't have a 667 bus, then there's absolutely no gain. If your processor has a 667 bus, then you don't really have a choice...

 

[DVK916]

Originally posted by: A5
If your processor doesn't have a 667 bus, then there's absolutely no gain. If your processor has a 667 bus, then you don't really have a choice...

This really isn't true. Core Duo has a 667 bus but you can also use 533 memory.

 

[RockGuitarDude]

Originally posted by: DVK916

Originally posted by: A5
If your processor doesn't have a 667 bus, then there's absolutely no gain. If your processor has a 667 bus, then you don't really have a choice...

This really isn't true. Core Duo has a 667 bus but you can also use 533 memory.

This is the case. I got a Dell E1705 (core duo 2ghz) with the stock 1gig 533MHz ram.

Just want to know if I'll see a performance difference between 533MHz with a cas latency of 4 and 667MHz with a cas latency of 5.

 

[A5]

Originally posted by: RockGuitarDude

Originally posted by: DVK916

Originally posted by: A5
If your processor doesn't have a 667 bus, then there's absolutely no gain. If your processor has a 667 bus, then you don't really have a choice...

This really isn't true. Core Duo has a 667 bus but you can also use 533 memory.

This is the case. I got a Dell E1705 (core duo 2ghz) with the stock 1gig 533MHz ram.

Just want to know if I'll see a performance difference between 533MHz with a cas latency of 4 and 667MHz with a cas latency of 5.

Ah...I'm not sure what the memory bandwidth situation is like on the new Duos, but I doubt the price/performance of 2GB of 667 (to replace the current 1GB of 533) is worth it over just buying another GB of 533...

 

[squirrel dog]

I doubt you could 'see' the diff.Software may not see much of a diff.

 

[DVK916]

Originally posted by: A5

Originally posted by: RockGuitarDude

Originally posted by: DVK916

Originally posted by: A5
If your processor doesn't have a 667 bus, then there's absolutely no gain. If your processor has a 667 bus, then you don't really have a choice...

This really isn't true. Core Duo has a 667 bus but you can also use 533 memory.

This is the case. I got a Dell E1705 (core duo 2ghz) with the stock 1gig 533MHz ram.

Just want to know if I'll see a performance difference between 533MHz with a cas latency of 4 and 667MHz with a cas latency of 5.

Ah...I'm not sure what the memory bandwidth situation is like on the new Duos, but I doubt the price/performance of 2GB of 667 (to replace the current 1GB of 533) is worth it over just buying another GB of 533...

So there won't be any effect of having memory that is slower than the FSB of 667 mhz.

 

[max2]

Why get 2 gigs of ram on your laptop ?

What do you do on it?

Game?

I can only see gaming and I guess graphic designing or whatever requiring this.

Now if you were talking about a desktop I would say go ahead!

Better to upgrade to a 7200 rpm hard drive in a laptop then go to 2 gigs of ram in my opinion.

 

[RockGuitarDude]

I game heavily hence the 2GB of ram. (World of Warcraft, CS:Source)

 

[Brainonska511]

Originally posted by: RockGuitarDude
I game heavily hence the 2GB of ram. (World of Warcraft, CS:Source)

I don't think there would be too much difference between 533 ram and 667. The dual channel of the ram will give more bandwidth than then what the processor can access. Plus, the higher CAS latency of the 667 will offset any speed gained by the higher clock speed of the ram.

 

[Koing]

1GB for me is not quite enough. 1.5GB is nicer :thumbsup:, then might as well go to 2GB

Koing

 

[RockGuitarDude]

I don't think there would be too much difference between 533 ram and 667. The dual channel of the ram will give more bandwidth than then what the processor can access. Plus, the higher CAS latency of the 667 will offset any speed gained by the higher clock speed of the ram.

That's what I am trying to get at.

The 667MHz with a cas of 5 clocks would likely be the same as the 533MHz with a cas of 4 clocks except for the fact that it is running with the looser timings and higher clock.

Wanted to check if my logic was correct.