Hp dv9500t supports ddr2 pc2-6400 800mhz ram?

dv9500t supports pc2-6400 800mhz or only pcs-5300 667mhz? Here says that supports 800mhz: http://www.crucial.com/store/listparts.aspx?model=Pavilion+dv9500t+Series

The live support from hp gave me this link above

 

As far as I know Santa Rosa will only support 667.

In any event though, the latencies of the higher clocked RAM completely wipes out the speed advantage. Any speed at 533 or faster performs about the same.

 

Especially considering the price difference on that Crucial chart. The DDR2-800 costs significantly more, which is a waste as it would downclock to DDR2-667 speeds anyway (if it even runs at all).

 

does HP offer the 800mhz RAM versions for sale on a customized dv9500t? if they do then isnt it some sort of misrepresentation of the product considering they know it will downclock?

 

I asked a rep about the speed of the ram for the dv9500t and he said it was clocked at 667mhz

 

I doubt they offer it on the CTO's, and it is not listed on HP Parts either. I don't even know why Crucial would list DDR2-800 for that machine.

 

Also not understood... Hp not says wich frequency is their ram, only says ddr2, now a friend said above that they use 667mhz. Are you sure if I use 800mhz it will downclock to 667? Santa Rosa for sure not supports 800mhz of ram? Wich notebook can use ddr2 800mhz??

 

Wich brand is better, kingston or crucial?

 

Santa Rosa does not support DDR2 800Mhz RAM. It supports 800MHz FSB processors. The latest Intel chipset used in Santa Rosa based systems currently only support memory upto DDR2 667...
http://www.intel.com/products/chipsets/pm965/index.htm

Take your pick. I prefer Crucual due to previous experience with them plus they are owned by micron and so use Micron memory chips but Kingston are also pretty good and in reality difference between the manufacturers has decreased and quality in general is pretty good amongst the manufacturers.

 

Thanks friend, do u know wich processor of intel for notebook supports ddr2 800?

 

Currently none. Unless you buy a notebook with a desktop chipset/cpu in it like the Sager NP9260

 

None of them do right now. Maybe next gen processors will.

 

And why crucial made that memory 800mhz for notebook???

 

Saw now that kingston already have this kind of memory: http://www.newegg.com/Product/Product.aspx?Item=N82E16820134342

 

Because they can. The RAM will downclock to 667, but at least they are starting to manufacture 800 RAM which will drive prices down and help ensure the market can produce enough 800 RAM when the time is right.

 

Some AMD based systems and desktop based notebooks also support DDR2 800 memory. I think everybody expected Santa Rosa to support DDR2 800 memory as well but for some unknown reason Intel decided aganist it.

 

I've reported this error to Crucial. They should not be reporting that the system uses 800MHz RAM. It COULD use it, but only at 667MHz. Hopefully they will make an honest correction to this.

 

What is the difference of pc2-5300 and pc2-5400 ?

 

Nothing, just marketing really. the 5400 is "100" faster. They will both work fine.

 

What??? Not understood

 

They will both work fine. There is no effective difference.

 

The PC2 5300/5400 actually have no difference. The number refers to the max available bandwidth with the memory. The bandwidth is not exactly 5300 or 5400, it is in between these numbers ~5336. Its just marketing and there wont be any difference between them.

Also in some cases they test the memory at a slightly higher clockspeed which enables them to label and sell it as PC25400 but again with the FSB and memory controller limitations it doesnt matter what memory you use, your memory bandwdith will be limited by the FSB. Just dont pay any extra for memory labeled PC2 5400 over PC2 5300.

 

Yes I think is marketing. Crucial uses pc2-5300, ocz uses pc2-5400, do u know what kingston uses? They not mention about it in their website

 

Kingston sell both types. I am pretty sure both Crucial & OCZ do the same as well.

 

Are you sure? If they sell both types them cannot be the same as you said

 

Yeah, they are still the same. Kingston probably test the memory at a slightly higher clockspeed DDR2 675(instead of DDR2 667) which enables them to label and sell it as PC2 5400 but since the memory sync's with the FSB even though the memory is rated slightly higher it will be limited by the FSB speed which is 667MHz. So, in the end even if you buy PC2 5400 memory it will offer the same bandwidth and speed as memory labeled as PC2 5300. You end up with zero difference between the two.