Which of these modules?

[sticks435]

Hey all,

I just installed vista x64 in dual boot with my vista 32 partition, and am liking it so far. Right now I have the memory listed in my sig, running at 333/800 divider @ 438 fsb. I'm strongly thinking of moving to 4 gigs, and was wondering if it would be of any benefit to move to ddr2-1066 instead of 800 with the CPU I'm using. My bios supports a 333/1066 divider also. If so, I was thinking of these 3, with my preference towards the OCZ. I see that it's 5-5-5-18, and the others are 5-5-5-15. Would I be able to set the OCZ down to 15 to match?

http://www.newegg.com/Product/...7298%2CN82E16820145215

 

[sticks435]

Seriously? 30 views and not one reply?

 

[myocardia]

Honestly, man, if you're already "leaning" toward a particular set, nothing we say is likely going to change your mind. I'd personally recommend getting RAM that has the same timings and vDimm requirements. There's always less problems when adding RAM that's as much like what's already installed as possible, than trying to band-aid together 4 sticks that aren't very much alike.

 

[sticks435]

I guess I must have been drinking when I posted that originally. What I ment to state was that I'll be getting rid of my current sticks, and getting another new matched set. I guess my main question was around wether I really needed 1066 for my setup, or if 800 would do.

 

[Denithor]

Do you need 1066 with any C2D setup? No.

e6750 stock = 8x333 = 2.66GHz
e6750 OC = 8x425 = 3.4GHz

Good quality DDR2-800 will easily stretch to cover DDR2-850 speed. There are two mushkin 2x2GB kits at newegg for $50 after rebate. Enough said.

 

[sticks435]

Originally posted by: Denithor
Do you need 1066 with any C2D setup? No.

e6750 stock = 8x333 = 2.66GHz
e6750 OC = 8x425 = 3.4GHz

Good quality DDR2-800 will easily stretch to cover DDR2-850 speed. There are two mushkin 2x2GB kits at newegg for $50 after rebate. Enough said.

One last question. If I wanted to run 1:1 with 1066, I would need a cpu fsb of 533 correct? Which a C2D wouldn't come close to reaching.

 

[Denithor]

Most motherboards have various memory multipliers so you can push it up beyond 1:1 to run at the rated speed.

However, lots of benchmarks out there agree: there is virtually no benefit (1-2%) in real-world applications from doing this (you won't ever notice the difference).

That's why most people here recommend DDR2-800 for moderate overclocking and DDR2-1000 for hardcore overclocking (I mean, you might get a chip up to 9x500...with a lot of luck and excellent cooling). Keep in mind also that most quality memory will scale well beyond its rated speed with a little extra voltage & loose timings.

 

[sticks435]

Cool. Yea, I was running my current pc-800 at 4-4-4-12 2.0 @ 425 fsb, but once I found out Intel CPU's like speed over timings, I lossened up to 5-5-5-15 and 2.05 volts at 438. I was going to try and go higher, but have been busy, and figured if I was moving to 4 gigs anyway, it wasn't worth messing with.

 

[sticks435]

Anyone know what the difference is between these 2? It looks like the mem with the lower timings is actually cheaper? How's that work?

http://www.newegg.com/Product/...6731%2CN82E16820146692

edit: nm, I just realized that the price difference is $3, but the rebate diff is $5.

 

[Denithor]

The blue ones are what I have in my gaming rig.

There's also a set of G.Skill 2x2GB DDR2-800 for $55 shipped, no rebates.

 

[Zapper48]

I'm running 8 gb of OCZ DDR2 800 at 5-5-5-15 1.8v tRFC 54 I really like OCZ

 

[Yellowbeard]

One last question. If I wanted to run 1:1 with 1066, I would need a cpu fsb of 533 correct? Which a C2D wouldn't come close to reaching.

Actually, plenty of 8*** Core 2s will run 533+. The real question is will your MOBO do it. I know with "mortal" cooling your 6750 won't so you are probably better off with a nice DDR2-800 kit as noted above.

 

[sticks435]

Yea, I 200mhz overclock on air would be impressive. The AC7 is pretty awesome, but even it wouldn't be able to keep up.