Confused ? What mem ??

pickie

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hi all will be building a new Core 2 Duo E6600 soon and looking at ram for it, the motherboard im thinking of getting is an Asus P5B Deluxe 965 Socket 775.
it says the MB will take DDR2 4300,5300,6400.

what im asking is what mem will be best, im not wanting to overclock, but id like something that is fairly fast

from other posts someone suggests running 1 Gig 4300 4-4-4-12 in dual channel mode to get a 1066 FSB match with the cpu ?? is this corret

also would 1 Gig DDR2 6400 4-4-4-12 in dual channel mode be better or worse ???

cheers
Mike
 

XMSYellowbeard

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I would suggest that you select a brand of memory you trust and buy the most affordable 2 x 1gb kit of PC6400 memory rated at CAS3 or CAS4 timings. With the board you have, this type of memory will give you good flexibility at stock settings and if you ever choose to OC.
 

pickie

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hmm thanks but that didnt realy answer my questions ?

would i get better performance out of 2 sticks of 1 gig of DDR2 6400 running at 4-4-4-12 dual chanel mode which i think will be ansyncranes

or 2 sticks of 1 gig of DDR2 4300 running at 4-4-4-12 dual channel mode which will have the same speed as the FSB of the CPU 1066Mhz so 1:1 which will be sysncranes

or is there no noticable difference between the 2 and just go for 2 sticks of 6400 ????
 

XMSYellowbeard

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You will get more memory bandwidth from the memory at DDR800. However, this improved bandwidth does not directly translate to "huge" performance gains real world. In the limited testing I have done, most applications are likely to 3-5% faster with the memory at DDR800 vs DDR533, all other things equal. So, there is some advantage but it is not huge and to some, not worth a great deal of money difference. However, most good DDR533 is going to be close to the cost of good DDR800 due to the recent price drops. And, if you ever do decide to OC the CPU, which WILL give a good performance increase, you will have more headroom with the DDR800.
 

XMSYellowbeard

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Those results are about what I expected and what I found when I tested.

However, compare prices and tell me which memory makes the most sense. And, this is applicable to any brand the OP chooses:

PC5400 for $163: http://www.newegg.com/Product/Product.asp?Item=N82E16820145015

PC6400C5 for $166 after rebate: http://www.newegg.com/Product/Product.asp?Item=N82E16820145590

PC6400C4 for $194 after rebate: http://www.newegg.com/Product/Product.asp?Item=N82E16820145034

The PC6400C5 should match or exceed the performance of the PC5400 at PC5400 speeds and allow guaranteed overhead for OCing. That's worth $3 IMO. $28 gets you better latencies.
 

Mondoman

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The PC6400C5 should match or exceed the performance of the PC5400 at PC5400 speeds and allow guaranteed overhead for OCing.
True, but the PC5400 guarantees CL4 performance at PC5400, and I would think should match the PC6400C5 performance at PC6400 speeds.
It all depends on which guarantee is worth more to you, hence the minimal $3 price difference.
 

pickie

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ok cheers, thats made it a little clearer :)

think ill go for Geil® Ultra DDR2 2.0GB PC6400 Dual Channel memory kit (2 x 1GB) 800MHz (4-4-4-12) +Aluminium heat spreader

now on to another Q :) is Geil mem ok for the Asus P5B deluxe Mbs ???


Cheers for all the info

mike