Core i7/X58 Overclocking Thread

[Hornet331]

I think the only thing that holds the H20-220 back is the rad for i7's but then again not allot of blokes out there are nailing 4.2ghz with HT on.

I'll do some 4ghz, HT off tests when I get home and see what the deal is. Also, I'm changing this TIM. I have a feeling it's not up to the challenge.

the swifttech rads are for its size excellent, especial when you need low profile rads.

that they cant competent with a TC or a Fesser is no surprise. A TC is nearly double the hight of a Swift.

[bench2die]

Bench2die what do you have for video cards?

Because that average seems impossible.

tri sli gtx 280s I think for that run they where at 730core 1282 memory linked shader

Now it could be "bugged" dunno don't really care its only crysis, haven't even played it since I installed it on this setup and probably never will.

[ap4lifetn]

I'm curious, what kinda voltages do you some of require to run at stock speeds?

im a little disappointed, voltage jumps to 1.248 under p95 at stock speeds for me.

i see people going 4.0GHz at like 1.1X it makes me jealous

[fornowagain]

i see people going 4.0GHz at like 1.1X it makes me jealous

Don't get too jealous you won't see many like that

[Hot'n'Chilly]

I'm curious, what kinda voltages do you some of require to run at stock speeds?

You mean if we wanted to see how little juice it would be possible to use and still have it run at 2.66ghz? Not sure. Some guy here was trying to OC just on stock voltages though, not sure how that went.

I'd like to know what the most common voltages for CPU and QPI(UnCore) are for 4.0ghz OCs. I'm at 1.30v CPU and 1.35 QPI(UnCore) at 3.8ghz... which seems like a pretty low voltage to me, but maybe its about right.

[icecold316]

What is the default/stock QPI/VTT Voltage for I7 920 ???

[fornowagain]

What is the default/stock QPI/VTT Voltage for I7 920 ???

1.1v, some boards (P6T) default it to 1.2v

[Astratuner]

Anyone?

Got myself a Q here .


The later I order the more chance I get to have a 'B' batch model?


And when you guys overclock, do you burn in your cpu then with a amount of time? Or...


Thanks!

Really no one?

[Hot'n'Chilly]

Got a question for the guru's... I'm running 4ghz at 19x212 with CPU Voltage of 1.375v, is this a dangerous amount of voltage for the CPU? In the bios when I raised it the font turned red. Is 1.375v CPU really that high?

[SteveRo]

Reverend - yes! exactly - not a lot of folks are hitting 4.2 HT on - including me!
I am thinking that going from air to a good water set up might get me there!

[SteveRo]

hot n chili - 1.375v is a good reasonable v core IF your temps are ok.
intel's specs (some of them) -

[Hot'n'Chilly]

hot n chili - 1.375v is a good reasonable v core IF your temps are ok.
intel's specs (some of them) -

Cool, thank you Steve. I got a little freaked out when the bios turned the font red I guess.

As for temps its 42c right now, just messing around. Whats a good idle and load temp to want to stay under?

[SteveRo]

When I am not benching with this machine (and that is not often) I run at 4ghz HT off (21x191) @ 1.28125v, see below -

[dejanh]

Really no one?

Well, you can always try to tell your place where you are buying that you want to buy a CPU but only if it has ####B### in the code, instead of ####A###. However, there have been some A chips as well that were good for voltages. As they are the same stepping I would say that there may have just been some issues with the very early chips, but I will be able to tell that soon. I am getting a brand new i7 940 from Intel in a couple of days so I am eager to compare it to the existing one. If I can shave down the voltages to 1.35-ish range for 4.0GHz I will be reasonably happy. The 1.2xV chips for 4GHz are lucky even if they are B chips.

Now in terms of waiting, yes, you can wait, but you have to remember, stock on i7 920s moves slow, on i7 940 and i7 965 XE it barely moves at all so you may be waiting for a very long time for them to all flush through the market...

[SteveRo]

hot n chilly - screen shot with some settings for 21x191 - remember when oc'ing - ymmv -

[Astratuner]

Well, you can always try to tell your place where you are buying that you want to buy a CPU but only if it has ####B### in the code, instead of ####A###. However, there have been some A chips as well that were good for voltages. As they are the same stepping I would say that there may have just been some issues with the very early chips, but I will be able to tell that soon. I am getting a brand new i7 940 from Intel in a couple of days so I am eager to compare it to the existing one. If I can shave down the voltages to 1.35-ish range for 4.0GHz I will be reasonably happy. The 1.2xV chips for 4GHz are lucky even if they are B chips.

Now in terms of waiting, yes, you can wait, but you have to remember, stock on i7 920s moves slow, on i7 940 and i7 965 XE it barely moves at all so you may be waiting for a very long time for them to all flush through the market...

Thanks for bringing that to my attention.

Btw if you oc, do you let your cpu burn in for a few days or???

[SteveRo]

What is the best radiator for hot i7? (set up is in signature block).
Planning my first water set up - single loop, gtz block with mcp655-B pump and ???radiator??? from frozenCPU - any of these?

[msgclb]

What is the best radiator for hot i7? (set up is in signature block).
Planning my first water set up - single loop, gtz block with mcp655-B pump and ???radiator??? from frozenCPU - any of these?

What are you going to install this on/in?

[SteveRo]

installing on a tech station (open case - rack - basement computer closet), 965 extreme on ggbt x58 extreme mobo.
avitar is a weak pic of set up.

[Chicken Patty]

here is a monster rack IN THE STATES. hOWEVER DONT THINK THIS WILL COOL ANY BETTER THAN A GOOD 120.4 RAD WITH A GOOD PUMP.

http://www.performance-pcs.com/catal...ducts_id=21622

[ReverendMaynard]

What is the best radiator for hot i7? (set up is in signature block).
Planning my first water set up - single loop, gtz block with mcp655-B pump and ???radiator??? from frozenCPU - any of these?

The Feser hands down.

Thanks for bringing that to my attention.

Btw if you oc, do you let your cpu burn in for a few days or???

Burn in is a myth, so unwrap it and clock it like it's stolen.

[MotF Bane]

SteveRo, of your list, definitely the Feser is best, and unless Koolance has moved from Al, avoid it like the plague.

[dejanh]

Thanks for bringing that to my attention.

Btw if you oc, do you let your cpu burn in for a few days or???

I don't believe in burn in. 12 years overclocking I have never seen any benefit to burn-in.

[Hot'n'Chilly]

When I am not benching with this machine (and that is not often) I run at 4ghz HT off (21x191) @ 1.28125v, see below -

Having HT off makes the voltage demands a lot lesser doesn't it... 1.28v CPU Voltage is not much. I'm now needing somewhere in the ballpark of 1.385v CPU Voltage to keep my 4.025GHZ OC stable.

[Hornet331]

Having HT off makes the voltage demands a lot lesser doesn't it...

usually yes, but since every cpu is different theres the possibility that a cpu would take no voltage increasement at all to achive the same clock with or without HT.