REX gurus GTF in here!!

[Dentlord]

I need some help hitting 600+ fsb on the rex ...

I have 2 e8600 and both top out at exactly the same 5.75ghz because I cant get the bus speed higher.

Any key voltages or settings that I should know about?

Is it absolutely necessary to freeze the nb?

Any help is appreciated

[DrNip]

Trying to remember but have you jacked with the gtlv lanes? I know tweaking those helped me. I never took it over 6 ghz so dunno about freezing the nb though I have seen many do this. Can you post up some of the settings you are using?

[2chesapeakes]

Trying to remember but have you jacked with the gtlv lanes? I know tweaking those helped me.

IIRC my board hits 600FSB with most settings to auto multi set to 7 play with NB volts and Vcore and possibly VTT. Also I found with 2 sticks of 2GB ram my board would max about the same as yours. 1 stick 1GB ram and 600 - 615FSB is not much a problem.

[Dentlord]

Trying to remember but have you jacked with the gtlv lanes? I know tweaking those helped me. I never took it over 6 ghz so dunno about freezing the nb though I have seen many do this. Can you post up some of the settings you are using?

Oh lord, back into the world of 775 GTL lol!! I will get some settings in here once I get it up and running later. Just trying to better prepare as last time on 775 was a complete fail.

IIRC my board hits 600FSB with most settings to auto multi set to 7 play with NB volts and Vcore and possibly VTT. Also I found with 2 sticks of 2GB ram my board would max about the same as yours. 1 stick 1GB ram and 600 - 615FSB is not much a problem.


Ill try one stick, was using 2x1gb thanks.

[DrNip]

I'm fixing to be back down that street too next week when the Black Opps arrives. Kinda gotten spoiled on overclocking with the core iX platforms. :Dizzy:

I can only imagine if you are wanting to get upwards of 6.5 GHZ that will require alot of NB volts and might require a pot. Then again I might just be full of it as I have never been that high. Good luck.

[Dentlord]

I HATE not having ROG connect or an evbot .... clocking in windows ftl!

I didnt get a working lcd poster with this board either.

[DrNip]

$17 shipped FTW!!!!

http://cgi.ebay.com/NEW-ASUS-External-LCD-LED-Poster-Republic-Gamers-/330476560829?pt=LH_DefaultDomain_0&hash=item4cf1f021bd#ht_500wt_1154

[Splave]

hey dentene ice
http://www.xtremesystems.org/forums/showthread.php?t=196683
time to read a novel! ;)

[Dentlord]

Sweet Nip thanks :)

What about mem strap, what is best for high fsb ??

Ahh superSplave to the rescue!!

/me gets his reading glasses ...

[Gunslinger]

600 on aircooling should be pretty easy with everything on auto, I wouldn't freeze the NB, but instead use a little watercooling.

[Chuchnit]

Dent I had the best luck on the 333 strap with my REX that I bought off of drnip. 266 is nice but I had issues with it running tight PL and high bus speed with it. Freezing the NB can gain you some fsb AND maybe run tighter PL. I can't remember all the volts but I think I was at 1.4-1.45v VTT, 1.7v-ish on NB, GTL's -40 -40, PLL 1.7v-ish and that took me all the way to 638-640fsb. I think I was 220+ benchable, but I was only on dice so I hit the limit for the temps. Don't forget your NB clock skew and CPU clock skew. I think at super high fsb I was around 400/200 or the other way around; I can't remember the order. Once you peg that out start playing with the clock delays on each rank and channel. Those are in the advanced memory settings.

[Dentlord]

Dent I had the best luck on the 333 strap with my REX that I bought off of drnip. 266 is nice but I had issues with it running tight PL and high bus speed with it. Freezing the NB can gain you some fsb AND maybe run tighter PL. I can't remember all the volts but I think I was at 1.4-1.45v VTT, 1.7v-ish on NB, GTL's -40 -40, PLL 1.7v-ish and that took me all the way to 638-640fsb. I think I was 220+ benchable, but I was only on dice so I hit the limit for the temps. Don't forget your NB clock skew and CPU clock skew. I think at super high fsb I was around 400/200 or the other way around; I can't remember the order. Once you peg that out start playing with the clock delays on each rank and channel. Those are in the advanced memory settings.


Wow good stuff there Chuch, thanks!

Seems I was way low on the vnb, and need to delve into the gtls

[DrNip]

Yeah you gots to put a little more work into that there setup of yours! lol It's a challenge but rewarding in the end.

[Chuchnit]

Wow good stuff there Chuch, thanks!

Seems I was way low on the vnb, and need to delve into the gtls

Ya unless you get a really awesome board you are prolly going to have to run 1.8v+ NB to stabilize it for 3d. Remember X48 chipset has to handle the fsb, pci lane traffic amongst other things. It has a little more stress that X58 platform.

[DrNip]

You know chuchnit, I have sold much of hardware in my life time and selling you that mobo takes the #1 spot in hardware sell regret. Was still regretting it this week when I couldn't find one for sale and had to settle for a Black Opps. I'll get over it one day just not today, lol. :confused4:

[Chuchnit]

You know chuchnit, I have sold much of hardware in my life time and selling you that mobo takes the #1 spot in hardware sell regret. Was still regretting it this week when I couldn't find one for sale and had to settle for a Black Opps. I'll get over it one day just not today, lol. :confused4:

Well just so you know, I kick my arse almost daily for letting it go myself. By far my favorite board to overclock ever.

[Splave]

DUKIE BOUGHT MINE :( +2 to regret

[DrNip]

Well I feel better that there are others out there like me. We need a support group! lol

Word of advice Joey, don't let that girl go. You'll regret it!

[Gunslinger]

Check the various F/S markets closely this weekend you may see something to mend that broken heart. ;)

[HITandRUN]

Check the various F/S markets closely this weekend you may see something to mend that broken heart. ;)

Oh yeah! I guess I have to look out as well! BTW: I always focus on the NB volts which I run on water and the CPU skew can give you a gain as well. From 0-200 you will need to try what your CPU likes. NB volts i tried 1.5-1.9V :good:

BTW: there was a one of them for sale 2 weeks ago on eBay and it went for $560. I said this is fucking crazy and didn't buy it.

[Dentlord]

Which ram slots, blue or white??

Jesus 1.8v+ on nb :o

[Chuchnit]

Dent, use the slots farthest away. I think those are the white ones.

[HITandRUN]

Dent, use the slots farthest away. I think those are the white ones.

This is what she said! (http://hwbot.org/community/submission/1033503_hitandrun_reference_clock_rampage_extreme_ 655.08_mhz) ;)

[crustytheclown]

here you go budy.Use the white slots of the memories paired with 2Gb set of D9GTR's
these screens might help you;)

http://overclockaholics.com/forums/attachment.php?attachmentid=3448&stc=1&d=1285346111

http://overclockaholics.com/forums/attachment.php?attachmentid=3449&stc=1&d=1285346111

http://overclockaholics.com/forums/attachment.php?attachmentid=3450&stc=1&d=1285346111

http://overclockaholics.com/forums/attachment.php?attachmentid=3451&stc=1&d=1285346111

these settings i use to boot at 630 fsb
if you still have problems with your mobo and don't get your ram above 1600+ whatever strap you use the you have a bad-strap mobo...:thumbdown:

[Splave]

^crusty ftw

[Chuchnit]

This is what she said! (http://hwbot.org/community/submission/1033503_hitandrun_reference_clock_rampage_extreme_ 655.08_mhz) ;)

shmexy :thumbsup:

[Dentlord]

WOW Crusty, thanks for the help!!

[Dentlord]

What is the best BIOS for REX + e8600?

[Gunslinger]

1201 ?

[Hondacity]

wow super info...i love this forum :D

[kikicoco1334]

$17 shipped FTW!!!!

http://cgi.ebay.com/NEW-ASUS-External-LCD-LED-Poster-Republic-Gamers-/330476560829?pt=LH_DefaultDomain_0&hash=item4cf1f021bd#ht_500wt_1154

dude that's awesome!

too bad the one on commando is soldered on to it... and it's broken ='(

but i should get one from my Rampage II Extreme :D

[Dentlord]

Well that was a couple hours of endless fail ....

I got into windows a total of ONE time ... and bsod within seconds.

Mostly just no post, cycle to defaults, try something else, no post, cycle to defaults, no post ..............

and that was as low as 550fsb.

Looks like I got a stinker REX, and pretty much useless since any boints to be had with e8600 are over 6ghz.

[Chuchnit]

Well that was a couple hours of endless fail ....

I got into windows a total of ONE time ... and bsod within seconds.

Mostly just no post, cycle to defaults, try something else, no post, cycle to defaults, no post ..............

and that was as low as 550fsb.

Looks like I got a stinker REX, and pretty much useless since any boints to be had with e8600 are over 6ghz.

What strap, divider and PL were you running? On 775 I always started on like PL10-12 and sorted everything else out first. Then tightened it up. My old board hated certain memory dividers too. IIRC, all I could run at high fsb was the 333/5:8.......... I think thats the divider. It was the next to highest memory mhz in bios on the 333 strap. Yours may hate all of the 333 and love 266 strap. Try it out.

[kikicoco1334]

I'm fixing to be back down that street too next week when the Black Opps arrives. Kinda gotten spoiled on overclocking with the core iX platforms. :Dizzy:

I can only imagine if you are wanting to get upwards of 6.5 GHZ that will require alot of NB volts and might require a pot. Then again I might just be full of it as I have never been that high. Good luck.


where are you getting your black ops from man?
i been wanting to get one of those for a while now..
dosn't it comes with like a pot on the nb? :D

[Dentlord]

Chuch to the rescue ... PL loosened to 12 and it got me booting into windows @ 575 ... at least I have something to start with now.

It likes the 400 strap, wont post with anything else actually.

This is all on phase btw, trying to get settings for 620 or so so I can go for 10 multi under ln2.

[GeorgeStorm]

Slightly off topic, how much does the PL affect benches (2D)
Just wondering cos when I've taken my board high (550+) the PL has been on auto methinks, so no idea how high/low :/

[HITandRUN]

wow super info...i love this forum :D

YES everyday you wake up and there is something to learn here!

Chuch to the rescue ... PL loosened to 12 and it got me booting into windows @ 575 ... at least I have something to start with now.

It likes the 400 strap, wont post with anything else actually.

This is all on phase btw, trying to get settings for 620 or so so I can go for 10 multi under ln2.

YES 400 was the best in my case as well.

[Dentlord]

Well I discovered one of my problems .... I had almost zero contact between my evap and cpu LOL.

Got the cpu overtemp warning in bios once and decided to check out the mount, which was horrid! I oriented the clamshell the wrong way and caps were holding it up off the cpu. Lucky I was only testing at low speed / cpu voltage.

It was booting windows at 590fsb before that though, so I am finally on the right track.

[Splave]

god I hate that, did it with the lightning the other day lol

[HITandRUN]

Yeah happened to me before as well. Glad you are on the right track again! Give her hell!

[Dentlord]

Finally broke the 600 barrier, booting at 610 so far, and check out that shmexy ram speed, some old Pi Blacks I had lying around hehe

http://overclockaholics.com/forums/attachment.php?attachmentid=3459&stc=1&d=1285361091

[crustytheclown]

Good to hear that,
do me a favor and try DRAM static read control and DRAM dynamic write control ENABLED at the bios.

[Chuchnit]

Slightly off topic, how much does the PL affect benches (2D)
Just wondering cos when I've taken my board high (550+) the PL has been on auto methinks, so no idea how high/low :/

IIRC, its kinda like RTL's on X58. Not huge, but it does give that last touch of efficiency. Of course I'm sure way loose just sucks.

Finally broke the 600 barrier, booting at 610 so far, and check out that shmexy ram speed, some old Pi Blacks I had lying around hehe

http://overclockaholics.com/forums/attachment.php?attachmentid=3459&stc=1&d=1285361091

Nice man. Quit fooking around and get that dewar filled :D

[Dentlord]

Good to hear that,
do me a favor and try DRAM static read control and DRAM dynamic write control ENABLED at the bios.

They are enabled, I had to change that early on and it helped a ton :)

If I set them to disabled or auto it wont post.


It seems that 625 is about my limit without some cold on the NB. That is fine though, just want to be able to get some HW boints out of this chip for teh team :D

Now its on to the f1 and ln2 weeEEeeEee

[Kal-EL]

Good luck Joey

[Dentlord]

Ok does the REX play nice with quads? If I have a shot of hitting 5ghz with the q6600 ill give it a go today...
What kind of bus speeds can I expect with a quad core?

[DrNip]

Dunno. You looked at HWBot for this?

[Dentlord]

Net is down at the hotel, posting on my phone so searching the bot will be a pain, I'm gonna give it a shot here in a minute. It won't take too much ln2 to find out.

[GeorgeStorm]

Highest legit with the Rampage methinks:
http://hwbot.org/community/submission/1017274_jabski_cpu_z_core_2_q6600_2.4ghz_4939.92_m hz
As this one is wrong, 13x multi?
http://hwbot.org/community/submission/981040_gradus_cpu_z_core_2_q6600_2.4ghz_5005.13_mh z

But overall seems P35 seems to be the best, although that may be due to the time at which the cpu came out.

[DOM]

Highest legit with the Rampage methinks:
http://hwbot.org/community/submission/1017274_jabski_cpu_z_core_2_q6600_2.4ghz_4939.92_m hz
As this one is wrong, 13x multi?
http://hwbot.org/community/submission/981040_gradus_cpu_z_core_2_q6600_2.4ghz_5005.13_mh z

But overall seems P35 seems to be the best, although that may be due to the time at which the cpu came out.
you beat me to it :laughing:

and the 13 multi cuz its a ES

[GeorgeStorm]

Yeah, but then its not really a Q6600 is it :/

[DOM]

Yeah, but then its not really a Q6600 is it :/
yes and no

it is a q6600 but no cuz its like cheating to some ppl cuz everyone cant get one :thumbdown:

[GeorgeStorm]

But I didnt realise that ES's sometimes had different multis?
Cos that makes them no longer that chip in my mind?

[Splave]

I agree george :)

[GeorgeStorm]

I mean, cos I thought most ES's were just the same chip, but high or low leakage or whatever, and the problem was that they weren't available to public
But this just seems like another chip completely

[Hondacity]

i snagged one rex board just posted today..hopefully its a screamer on air..and thus the vas treatment commence...

i think this is the only rex board discussion..i shall post questions here into

woooooooooooooooooooooooooooooooo

[Neuromancer]

Slightly off topic, how much does the PL affect benches (2D)
Just wondering cos when I've taken my board high (550+) the PL has been on auto methinks, so no idea how high/low :/

I dont know how much it effects 2D it has a pretty big effect on 3D though. (Which is odd I think it would effect 2D more... but...)

My First 775 board with PL settings (ASUS) scored exactly 1K less points in Vantage. 15K vice 14K. Reason was I had a PL on auto and at 500FSB on a Q9300 it was defaulting to like 13. I boughtthe board (forget what it was) because itwas the first p45 to hit 700+ and I was just trying to get 550. (only got to 535, but was on air )

[GeorgeStorm]

Hmm thanks, hopefully I'll get a chance to rebench the cpus on DI/LN2, so should be getting better scores anyway, but i'll spend some time fiddling with the PL if I can.

[Chuchnit]

George PL will help in superpi too. RTL on X58 is pretty much what PL is to s775

[Neuromancer]

RTL is a minimal effect on X58 not like PL on 775.

[Chuchnit]

RTL is a minimal effect on X58 not like PL on 775.

Well I agree. PL is more pronounced, but tight RTL's will keep you from beating your head against the wall on your efficiency. But ya its just for that last little bit.

[Hondacity]

PL = tRD for ddr2

http://www.ocztechnologyforum.com/forum/showthread.php?36361-tRD%28performance-Level%29-Calculator-ver1-DDR2-ONLY-Intel-Chipsets

[Hondacity]

pl = trd @ anandtech

http://www.anandtech.com/show/2427/3