Need Memory Help....

[squatpuke]

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Both of these are certified by evga's mobo site...

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145043

5-5-5-15 but 1066

and

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145168

4-4-4-12 but 800


So I guess the 800 is better for gaming? (lower latency?)

but isn't the 1066 faster?

Sorry I'm a noob.

I'll be puttin' it in a 680i evga, E6600 or E6700 with 8800GTS 320meg

Doubt I'll try overclocking, but might.

Please help me decide which RAM to get. The 1066 is damn near the same price as the 800.

Thanks

 

[Mondoman]

Unless you OC, even DDR2-533 memory will be fine, so pick whatever you want and don't worry about it.

 

[squatpuke]

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Sorry for being so ignorant, but how can 533 be comparable to 800 or even 1066 in regards to speed? The specs listed are for un-overclocked retail ram, correct?

Most 680i mobos have an fsb of 1333/1066/800...wouldn't running 533 also slow down the fsb and maybe not even be compatible with the boards? Or am I'm thinking of this stuff all wrong?

If you had to choose between the two types I listed, what would be your pick?

 

[Mondoman]

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Sorry for being so ignorant, but how can 533 be comparable to 800 or even 1066 in regards to speed? The specs listed are for un-overclocked retail ram, correct?

For C2Ds, data to/from RAM also has to go through the FSB. FSB effective throughput for higher-end current C2Ds is 1066MHz. So, what memory speed do we need to fill up this throughput? 1066MHz / 2 (for dual-channel mode) = 533MHz throughput per channel = DDR2-533. Here's some real-world data: http://www.madshrimps.be/?action=getarticle&number=1&artpage=1962&articID=472

.If you had to choose between the two types I listed, what would be your pick?

Neither. I'm not a big fan of memory that has to be majorly overvolted just to reach its advertised specs.

 

[Gh0stDrag0n]

Unless you overclock, all you will ever need is DDR2 533.
The C2D conroe defalt FSB is 266Mhz it being quad(4x)pumped that equals 1064Mhz fsb, DDR2 memory runs at (2x) the FSB that equals 532mhz.
Overclocking the C2D FSB to 400Mhz = 1600Mhz FSB for the processor and running memory at a 1:1 ratio 800Mhz FSB (DDR2 800)
There are only a few motherboards that can OC the FSB to match DDR2 1066 (FSB to 533mhz) I really doubt you will be doing that type of OC.

 

[squatpuke]

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Thanks...looks like I'll be wasting my money.

I'll check out 533....

 

[XMSYellowbeard]

All things considered, between the 2 sets you listed, I'd get the PC8500. It will run 4,4,4,12 latencies at 800mhz. It "might" also run even lower latencies at 533mhz.

 

[squatpuke]

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Ok...so here is what I bought...

http://www.newegg.com/Product/Product.aspx?Item=N82E16820146565

Micron chips and only $75 bucks (after rebate) at buy.com...


Looks like I can underclock (is that the right term) and get lower latencies at lower voltages...