DDR2 PC2-6400/DDRII-800 for iMac

[lazydog]

Hi
I noticed that the new iMacs have a FSB of 800 and Crucial's website are suggesting PC2-6400 memory modules rather than the DDR2 PC2-5300 ones.
So, is there a performance advantage from using the faster (and more expensive) PC2-6400 memory?

thanks

b e n

 

[superlatic]

Hi
I noticed that the new iMacs have a FSB of 800 and Crucial's website are suggesting PC2-6400 memory modules rather than the DDR2 PC2-5300 ones.
So, is there a performance advantage from using the faster (and more expensive) PC2-6400 memory?

thanks

b e n

have you noticed also that they only sell up to 2GB packs (2 x 1GB)

 

[lazydog]

Yes I did! I guess you can't get 2G sticks yet.

b e n

 

[superlatic]

Yes I did! I guess you can't get 2G sticks yet.

b e n

well apple are selling them (abeit at an overinflated price).

also i thought the imac used the same memory as the macbook pro?

 

[lazydog]

Sorry, I was refering to 2G sticks of PC2-6400, not the PC2-5300 that Apple sell.

b e n

 

[CEToons]

Crucial correction

Sorry, I was refering to 2G sticks of PC2-6400, not the PC2-5300 that Apple sell.

b e n

Crucial does sell 2GB sticks, and they are PC2-5300. They are priced at $140 each. I bought two to upgrade to 4GB of RAM.

When you scroll down, there is an option to "Display all" at which point the 2GB sticks will appear.

 

[Grenadier]

Is noone actually listening to the OP ?!

800MHz RAM enjoys about a 12-15% advantage over 667MHz.
Atleast thats what I heard - can anyone verify this ?

 

[DoFoT9]

Is noone actually listening to the OP ?!

800MHz RAM enjoys about a 12-15% advantage over 667MHz.
Atleast thats what I heard - can anyone verify this ?

will the 800mhz ram run on the new imacs?? this is what i want to know. would be a ripe improvement in some things.

 

[daneoni]

None whatsoever, its a complete waste of money according to this

 

[reflex]

800MHz ram will run, but it will run at 667MHz in the new iMacs.

 

[lazydog]

None whatsoever, its a complete waste of money according to this

Ah, many many thanks for pointing out that article.
I will stick with the slower memory and save some money

b e n

 

[DoFoT9]

None whatsoever, its a complete waste of money according to this

i have sources that say the santa rosa can support memory of 800mhz, and still run at 800mhz. i dont believe that. i cant believe it...

800MHz ram will run, but it will run at 667MHz in the new iMacs.

WHY!????? that is disgusting


ARGH BRAIN EXPLOSION!

editz0r: ok nm fck that!!! thats disgusting intel. shame shame shame

 

[booksacool1]

WHY!????? that is disgusting


ARGH BRAIN EXPLOSION!

editz0r: ok nm fck that!!! thats disgusting intel. shame shame shame

Well its been known for a while. The 'wonderful' new 965 chipset does not support 800mhz ram which is a pity for all those with turbocache/integrated graphics (where it will impact performance).

Having said that, buying 800mhz SODIMM's isn't such a bad idea because its future proofing. You'd be able to use it in your next laptop without taking a performance hit. Especially if those are 2gb sticks. You only loose out in price and timings.

 

[itendix]

I have just bought 2 x 2GB G-Skill PC2-6400 / DDRII-800 memory for my iMac Extreme but unfortunately my Mac doesn't even boot after the memory upgrade
Shouldn't it at least work with 677Mhz?

Can someone tell me what's the problem with the memory? I have attached two pictures.

The original memory:


The new one (sorry for the bad quality):


I would be very happy for any help