The Official PC building thread -3rd Edition

Rob,
At your current fsb if you use the 2.5x, the memory would be at 1057. If you raised the fsb to 426 with the 2.5x, you would be right at 1066MHz, with the CPU at 3.834GHz. Lots of options too! You could run the fsb at 444 with the 2.4 multi and be a hair below 4.0GHz (3996GHz). Like I said, lots of options! LOL!!

Russ

 

Russ, i dont have a 2.5 multi.2.4 then 3.0?????

im missing something on this OCing stuff i just cant get it over 4.0 barely get 4.0... i dont know tired of messen with it tonight . got it back at 3.83ghz stable mem is running 1030 right now with the 2.4multi... going to bed for the night back at it in the morning

 

Will,
Be Warned! Get that CPU under 1.5v quick unless you are water cooled. Even then I would be careful! The E6750 is known not to tolerate much over 1.5v without damage. That's exactly how I hurt mine. Now I'm waiting for it to do it's final die at 1.49v, and I can RMA it! Be sure and go by the voltage in the PC Health section of the setup!

With the memory, it depends on what the normal voltage is! At your current speed, I would lower your multi if you could, but you're at 2.0x now. Seriously, you gotta get that CPU voltage down below 1.5v! The E6750 is well known not to be able to tolerate even small increases in voltage, over 1.5v. It was the first E**50 chip and it the worst in that respect. The later **50 chips can tolerate a bit more juice, but not much!

I can't remember who, but it was shortly after everyone started hitting a 4GHz OC with the E6750 that problems with Electro Migration started to show up pretty quick!

Russ

 

Rob,
Go into the setup and hit CTRL/F1, then go to the "MB Intelligent Tweaker (MIT)". On the first page, near the bottom is "System Memory Multiplier". Turn off the Auto and you should have a 2.0, 2.4, and a 2.5 as well as other higher multi's! Be "sure" to hit the CTRL/F1 in the main page of the setup!

Russ

 

@Russ

I got it down ..Don't worry..I don't really like see'in the 1.5v on my cpu for that reason of heat..lol..i back it down to 1.360v




for some reason..I don't feel that this Memory is doin the trick for me and Cincy in my Bios it was reading 800 not 1066 at first..huh?


and wassup with this reading?

 

Will,
Looks good to me! 1066 on the memory speed! Most 1066/533 memory reads as 400MHz! They are just highly binned,overclocked and matched in sets, DDR2 PC6400 memory. They are still 800MHz chips! That's what CPUZ sees!

Russ

 

PC-8500 will always show up as PC-6400 800mhz as there is no such thing, it is merely PC6400 that is guaranteed to overclock to 1066mhz. As for it not helping, it depends on whether memory was a bottleneck before. Memory doesn't magically up your overclock unless it was already a limiting factor. You can put down your motherboard if you like, but 3.8Ghz off an E6750 is an impressive score. You don't tend to see overclocks any higher than that, that are genuinely stable.

 

OK Ive been at it for a hour and same results. i cant even get it to post above 4.0ghz Ive tried moving everything around different selections/choices. even lower CPU multi's went as low as 7x can get the higher mem speeds even had mem at 1140mhz but the OC was only like 3.79ghz.was stable there though.

Russ.
i did the ctrl/f1 thingy. it does have a 2.5x multi but only in the 266 strapping.the 333strapping goes from 2.0 to 2.66 same as 400 strapping. I'm using the 266 right now with the 2.5x multi. so my mem is running at 1062mhz right now, but as shaff has asked "can i tell the difference?" NO i cant..lol

heres a shot at Cpu-z i do have a slight increase in my OC from 3.8 to 3.82 (smoooken huh)also fsb up to 1700 from 1689.



not sure if I'm gonna keeps these stick or not... cant really justify the little increase i have gotten with them. plus i haven't gotten any higher OC just to run a little higher mem speed that i cant really see a change in. guess i can take them back and get a 1tb hdd instead of 500gb..lol

 

That doesn't surprise me, I can't tell the difference with underclocked and loosened memory. 700mhz CAS5 is a world apart from 1100mhz but I don't feel it, it's the storage devices that are the limiting factor for me.
As for the overclock, 4Ghz on any chip is no cinch, regardless of the frankly blatant lies hovering around the web. The only chips I'd actually expect 4Ghz to work at without some pretty extreme tweaking is the E8600, Q9650, QX9770 and 9775.

 

yes i agree 100% with that Sam. I have my E8400 OC'd to 3.8ghz stable and running everyday. i have to accept that and stop OCD'ing about running 4.0ghz everyday. 3.8 is awesome. when i get me a Q9650 then ill worry bout 4.0 everyday speed..lol

and as for the mem. i think it will be going back today.

 

Yeah the E8400 has a high multiplier of 9, so you can get 3.75Ghz before PC6400 starts being overclocked, and any decent PC6400 can go 5% or so, which would get you to near enough 4G.

 

my corsair PC6400 clocked to 8500 speeds no problems when i had it.

also the SPD is fail safe values that the manufactureres put in, so that the mobo will boot up even with lower Vdimm, due to PC8500 needing around 2Vs or higher, and wjec standard is about 1.8, so the manufactureres use a lesser SPD so you can boot up, from then you can set the board to the correct timings/speeds/voltages, and it will be fine.

2.22Vs big will, is fine, i have 2.3 running through mine, but dont use 2.2 on DDR3

sam i gotta gree with you, i notice no difference when using the same clock and different speeds, but when i have to increace the speed with a 1:1 (effect FSB to effect RAM) then i do, but thats, im guessing, due to the CPU speed increace.

the E0 E8400s seem to be hitting 4+Ghz fine aswell, also rob what cooler are you using?

 

as for my cooler im useing the ACF7 Pro now.. heat isnt a issue for me any more now that i got my faulty CPU rma'd.

 

is that the lapped one?

what are your temps?

lower your multi to 6-7 and try and raise your FSB to 450 ish, it may be you have FSB holes in your mobo?

and keep your RAM:FSB ratio 1:1, so 450MHz RAM (900 effective):450FSB (1800 effective)

 

FSB holes shouldn't exist with Intel chipsets, I've never encountered any.

 

speaking of that. this mem is going back and im getting me the OCZ vendetta2... and some 16x-r verbs so i can do some burning on my many ODD that have been neglected the last couple weeks....had to stick that in there..lol

 

i can do that easy with my ddr2 800 crucial now its anything over 900 they cant handle,and thats leaveing my cpu multi at 9

 

sam they do happen just not often and will only be a few mhz here and there.

no harm in trying to see if your mobo can do the 500FSB which with the 9 multi will give 4GHZ, but try with a lower multi first to see if it isnt the mobo holding you back.

 

drop the multi 1:1 and go to 500, you tried that, 2.2on the Vdim and 1.4 on the NB and 1.35 on the VTT (aka FSBT)