What memory for E6850 and P35 MB ?

[Morvak]

If I wait til July 22nd and get the E6850 and a P35 MB, can I use the 2x1gb G.Skill DDR2 800 memory to OC the FSB at a 1:1 ratio? Or do I need faster RAM ?

[meionm]

You be fine. If your cpu reaches fsb of 400 then memory will run at stock speed in 1:1 ratio. Gskill should have some headroom for overclocking depending on what you have.

[Morvak]

Cool thanks.. i'm still trying to wrap my brain around the FSB / memory OC thing.

[Morvak]

Oh another question... if the E6850 FSB goes above 400, will I then need faster RAM?

And what would FSB 400 on an E6850 equate to in ghz?

Edit: Eureka, I've got it! Nevermind!

Finally understand all this OC'ing business after reading the OC guide.

The E6850 has a 9 multiplier and has a 333 FSB so it's 3ghz stock.

DDR2 800 is 400mhz (because of the double data rate).

Soooo.. if I change the E6850 FSB to 400 then the RAM can handle it (since it has 400 mhz) which means I would be at 1:1 and I would have 3.6ghz!

Woot!

Now it all just depends on how far I can push the E6850 on air and if I should pickup faster ram. But 3.6 might be just fine for me for first time OC'er.

[jordon]

:clap:

[meionm]

Oh another question... if the E6850 FSB goes above 400, will I then need faster RAM?


Many of current ddr2 memory kits have some headroom for overclocking past its rated speed.

[Evilsizer]

what/which gskill 2gig ddr2-800 kit are you planning to get?

[Morvak]

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231114

OR

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231128 <-this if i can OC the e6850 on air past 400 fsb on a thermalright 120 extreme

unless there is better ram ?

[Evilsizer]

i would just stick with the HK's cause they will oc to that speed no problem.

better buy ram fast, thos HK's were 99 the other day. they are now 104 and the HZ's have gone back up to 114. guys take notice,when ddr2 goes back up its gonna stay up.

[Peepaw]

Yep, right now ram prices are about as good as they are going to get.

[ancalime]

Why not the Ballistix @ the egg?
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146565

Excellent clockers and only $70 AR.

[Brando]

Yeah just sell what you have and go for 2gb hk's. Even if you don't go over 3.6ghz you'll have better timings and no need to overvolt the ram if you do go higher.

[Rattle]

I would go crucial right now, grab some 1000's or 1066's and have some fun...

[Morvak]

Do the Crucial Ballistix and the G.skill HZ's have the micron D9 ics or is it just the HZ's ??

[Peepaw]

The ballistix do but I'm not sure about the g skills.

[Morvak]

OK cool.

Another question, still trying to understand how OC and memory works.

If I can OC the E6850 past 400 FSB on air, let's say 500 or 600 for example, then I should get the 8500 correct?

But the Ballistix 8500 has CAS 5, so won't it run slower than the 6400 CAS 4 ?

Or since my FSB is 500 the 8500 will run faster?

Just a little confused about this. ONce I understand it, then most likely I'll grab the 8500 around July 22nd.

I would buy now, but if anything happens, my 30 days or whatever would be up.

[Evilsizer]

if you ran the divider at 1:1 ratio it would take a fsb of 533mhz to run the 8500's at theirr rated speed. very few sticks right now ill do ddr2-1200, those that do need lots of volts which is not what i would go for. ram running with alot of volts die quickly.

[kimochii72]

Typically, most computer parts including Ram and CPUs will overclock at least 10-15% stable (up to DDR1000, after that the % decreases). That's a safe bet, more than likely you'll get more from both, so the ceiling raises that much more. Most DDR800 ram will hit DDR900 (which if you wanted to run 1/1 FSB to memory ratio that would mean 450mhz on both). Again that is a safe and almost guaranteed bet on what you can achieve as long as your motherboard will do 450 fsb, any p35 should surpass that with no sweat.
The trick to this is to do enough research and find out the limits of:

The Board : (hopefully it will do 520 to 550 FSB, If you get 533fsb stable then that matches perfectly to DDR1066 at 1/1 ratio)
From what I'm reading, most p35 should be able to hit 520 fsb. In this case we would tighten ram timings if using PC8500 (aka DDR1066)

The CPU: Lets say even though we got a dream chip known to do 5ghz. Hopefully it doesn't have a "FSB wall" and is able to match up against the motherboard at that 520+mhz FSB.

The Ram: With PC8500 or DDR1066 your guaranteed to do 533mhz on that computer part. If you got the above 2 to keep up then you got a nice 1/1 stable system, ideally which is what we all want. Because we then have that option if desired, and the option of reducing these numbers and then tightening the ram timings to hopefully go even faster. Any Ram guaranted to run 1066 at 5/5/5 should also be able to run even tighter timings at slower speeds (ie 4/4/4 at DDR800).

At least this is what my P35 plan is. I hope my assumptions are correct. Please correct me if I'm wrong.

Personally, I have 5 sets (10gigs) of Crucial Ballistix ram now. I plan on take the two of those best, highest overclocking sticks, mixed matched or not and keeping those two. That way I know the ram is not the limiting factor of the system.