Core i7/X58 Overclocking Thread

[icecold316]

I was thinking to go for 6 gb(3x2GB) Dominators @ 1600. Will it be a problem to run 6 GB of ram on 32 bit OS, as I know - it will only show 3 GB inside OS.

I am going to load 2 OS:
1. Win XP 32 bit (For work purpose - I need Sql 2000 32 bit and I cant spend $3k+ on SQL 2000 64bit Ver)
2. Vista Business Edition 64bit and run VMWare inside it to have Xp 32 Bit as guest OS.



Thanks.

[Hot'n'Chilly]

Alright, why is 1600 supposed to be a better OC'er than a 1333 with tighter timings? Could somebody explain to me how these two would OC differently?

[btdvox]

I was reading Saaya's Nehalem 101 thread and it stated that if you have a Extreme Edition you can simply raise the multi and oc the CPU that way without fiddling the BClock, is there a decrease in performance from doing this?

Also with DDR3-1600 ram, how does the 133 freq mutliply to DDR3 1600?

[fornowagain]

Also with DDR3-1600 ram, how does the 133 freq mutliply to DDR3 1600?

Its uses the x12 multiplier for the memory?

[bowman]

I was thinking to go for 6 gb(3x2GB) Dominators @ 1600. Will it be a problem to run 6 GB of ram on 32 bit OS, as I know - it will only show 3 GB inside OS.

I am going to load 2 OS:
1. Win XP 32 bit (For work purpose - I need Sql 2000 32 bit and I cant spend $3k+ on SQL 2000 64bit Ver)
2. Vista Business Edition 64bit and run VMWare inside it to have Xp 32 Bit as guest OS.



Thanks.

Any reason SQL 2000 x86 won't run in 32-bit compatibility mode? All the 32-bit apps I've installed thus far run just fine.. They just install themselves in 'Program Files (x86)' and run in WOW64 seamlessly.

[bob(nz)]

Well - put the CPU under the F1 pot just to get a feel for what the CPU can / cant do

Cold boot bug at around -70 and cold bugs around -100

CPU: Retail i7 965EE
Board: Gigabyte EX58 Extreme
Memory: OCZ PC12800 DDR3 Triple

All my testing to date has been with the CPU between minus 50 - 60 degrees.

Have been having a play to try an find my max clock (havent tried too many tweaks yet) and think I have found me limit without turning off hyperthreading etc :weirdo:


Best WPrime 32 and PiFast runs at 4896

Best WPrime 1024 run at 4860

Best Super Pi 32M run at 4788



Will try some 3D benching tomorrow and see how 3DM06 and Vantage go

[safan80]

1.712 vcore... yeah your chip will last two weeks

what cooling are you going to use for 24/7?

[btdvox]

^^ what is the max safe 24/7 vcore for a 965?

[bob(nz)]

1.712 vcore... yeah your chip will last two weeks

what cooling are you going to use for 24/7?

Whoops -back to 1.62 in bios - not sure how I did that

This will eventually go under my modded MachII - just perfect for these CPU's

[burningrave101]

I have basically the same setup as you, just using Core i7 940 instead of 965. Same Dominator sticks. I was able to run them at 1800MHz 7-7-7-20 stable with 1.65V and 1.437V QPI/DRAM. However, I have also noticed that upping the core speed will affect your ability to run the ram so high. I am still investigating this issue...

It's because of the integrated memory controller on the CPU now. I don't know how much the MC compares to the one AMD uses in terms of some MC's being weaker than others but if your CPU has a weak memory controller it can affect your overclocks. The more RAM you have installed and the higher the mem speeds you run the more stress you're putting on the MC. Increasing the CPU speed also increases the speed of the link between the CPU and MC so that's why high memory speeds become less stable the higher you overclock the core speed.

Here's a pretty helpful overclocking guide for the Asus P6T Deluxe that has some helpful hints for those who are starting out on this board:

http://www.bit-tech.net/hardware/200...-core-i7-920/3

[herderien]

You are assuming auto will result in same settings with 19 vs 20 multi on an immature bios, you might be right, but my bios was changing auto settings as I made other changes. I would at least make sure your auto uncore is on 16x, ie 3200 mhz 16x200 when you go from 19 to 20 multi, ie make sure it does not change. I took all the important things off auto, especially after watching them change for worse when i boot up at different settings. My mem timings if left on auto on some multis will try and boot at 6,6,6 18, and when it fails it will kill my OC and then boot up at 6,6,6, 18, despite a rating of 1600 at 8,8,8 24. Bios definitely immature, I dont trust auto for much. But loadline definitely helps on mine.

i checked qpi and memory, it stayed the same as it was with 19 multi...i know sometimes the auto features doesn't make good decision, but i was able to verify it was keeping the good multis (3600 qpi / 3200 nb)

loadline calibration did not help, i think either it's not reachable for my cpu or it needs too much vcore...
or maybe there is something with the imc now

[rge]

i checked qpi and memory, it stayed the same as it was with 19 multi...i know sometimes the auto features doesn't make good decision, but i was able to verify it was keeping the good multis (3600 qpi / 3200 nb)

loadline calibration did not help, i think either it's not reachable for my cpu or it needs too much vcore...
or maybe there is something with the imc now

yeah, I got lucky with a pretty good cpu, makes up for my E8400, and my mediocre E8600. Mine starts eating vcore above 4.1, looks like yours does it a little earlier.

[FrostyPanda]

TO EVERYONE IN WHO HAS OVERCLOCKED ANY OF THE CORE I7 CHIPS, PLEASE POST YOUR RESULTS IN THE INTEL CORE I7 OVERCLOCKING DATABASE. This thread is located here.

[paill]

core I7 920es@ 4Ghz/1.30v :ouch:
watter X58-extreme

[herderien]

yeah, I got lucky with a pretty good cpu, makes up for my E8400, and my mediocre E8600. Mine starts eating vcore above 4.1, looks like yours does it a little earlier.

it's weird though, i wonder if there's some other parameter i should play with to make those 4Ghz stable...

[Hot'n'Chilly]

Just for the record... nobody has yet been able to achieve 4ghz stable, right? So whats the highest any person has been able to get 24/7 stable? 3.8ghz? 3.9 maybe?

[pinto]

What are saying? Look two posts above.

[rge]

Just for the record... nobody has yet been able to achieve 4ghz stable, right? So whats the highest any person has been able to get 24/7 stable? 3.8ghz? 3.9 maybe?

Also 4ghz, 12 hrs prime
http://www.xtremesystems.org/forums/...&postcount=386

[Lukee]

It took me just one attempt to do this, less than 2 minutes.

4.188Ghz with just 1.34 V, below the 1.35 V limit, very much stable.

Who did say overclocking this would be hard?



CPU-Z Validation

What cooling did you use for this?

[Lukee]

I have a memory question.

I have 2 sets of these Gskill memory 7-7-7-18 1.9V
http://www.newegg.com/Product/Produc...82E16820231167

Will I be able to run these triple channel at 1600 MHz on a Gigabyte X58 -Extreme board?

I don't mind loosening up the timing, but I am curious, will I need to get new RAM?

If they won't do 1600 MHz due to Vdimm, what do you think their max will be?

I should be getting my CPU and MB tomorrow, so if I need to get a new memory kit, I'd like to order it tonight and get it shipped next day.

Thanks in advance.

[herderien]

20x200 is easy in windows...but hard to get stable..at least for me ^^

[Guacamole]

core I7 920es@ 4Ghz/1.30v :ouch:
watter X58-extreme

Nothing prsonal but I wouldn't call this Prime stable in my book OCCT is not prime95...

What are saying? Look two posts above.

Again hard to call that stable without more info.. That's a really limited post Prime95 for 12hours maybe... pinto I see in your sig 4.65 is that prime stable? pics or I call shenanigans...

Also 4ghz, 12 hrs prime
http://www.xtremesystems.org/forums/...&postcount=386

That's a sweet OC but not a 920 that being the main difference although you make me think I should get the 940...

Also I wonder if the amount of memory which for you is 3gb has anything to do with the ability to OC the processor??

[sonofander]

Nothing prsonal but I wouldn't call this Prime stable in my book OCCT is not prime95...



Again hard to call that stable without more info.. That's a really limited post Prime95 for 12hours maybe... pinto I see in your sig 4.65 is that prime stable? pics or I call shenanigans...

oh god, here comes the prime 95 police

[Guacamole]

oh god, here comes the prime 95 police

sonofander:
"I have a good understanding of prime all I need to do is prime for an hour and I'm stable.. See, I use the defferent tests to make sure I'm stable in certain areas and I move on with my life.. I'm running prime for half an hour I'm calling this stable.."

Really? I quote you from our phone call this morning...

[sonofander]

sonofander:
"I have a good understanding of prime all I need to do is prime for an hour and I'm stable.. See, I use the defferent tests to make sure I'm stable in certain areas and I move on with my life.. I'm running prime for half an hour I'm calling this stable.."

Really? I quote you from our phone call this morning...

Go to Mwave and get your 5th x58 board to prime on till you break it and have to rma AGAIN...

I'm gonna go back to having fun with mine

Call me when your ready to stop being the P95 police and wanna play some L4D