tempnexus
Premium
join:1999-08-11
Boston, MA | What's the Overclockpotential of I7 860 vs 920 Vs 920
Can the 860 hit 4.1Ghz?
also what is the probablity of 920 hitting that?
How is the new stepping of 920? Does it allow higher OC potential? |
|
elios
join:2005-11-15
Springfield, MO
 ·Mediacom
| can it yes
can you well how much do you want to spend on cooling
to do 4+ your looking at a hefty water setup
it might be cheaper to go to higher end part
imo if you can get to 3.8 thats all you really need on an i7
even an i5 at 3.6 will last a wile
id get a 860 and shoot for 3.6 to 3.8
with good air cooling itll be more then fast enough for any thing |
|
tempnexus
Premium
join:1999-08-11
Boston, MA
| reply to tempnexus
I have a custom water cooling now with a Swiftech block (just bought an adapter for both 860 and 920 off ebay for $11). I am currently running a Core2Duo 6600 at 3.7 Ghz so I was hoping to hit higher on the corei7 or otherwise it's not really worth upgrading.  |
|
benwish
Premium
join:2001-01-06
Haverstraw, NY
clubs:
| reply to tempnexus
I am running a i920 (C0 stepping) since march @4.0 on air.
No problem with that, ever.
»Re: [Cooling] CoolerMaster V8 rocks!!!
Its limit is at 4.4 on my water rig, because i had to feed 1.65volts. I went back to my V8 cooler because of little leaks on my pump and never fixed it, 4.0 is plenty fast on a quad core with that much caching.
B |
|
Thislilfishy
join:2008-10-28
Orangeville, ON
 ·TekSavvy Solutions..
1 edit | said by benwish  :I am running a i920 (C0 stepping) since march @4.0 on air. No problem with that, ever. » Re: [Cooling] CoolerMaster V8 rocks!!!Its limit is at 4.4 on my water rig, because i had to feed 1.65volts. I went back to my V8 cooler because of little leaks on my pump and never fixed it, 4.0 is plenty fast on a quad core with that much caching. B What temps are you running, when I push to 4Ghz I get up to the low 80's...so i backed it down to 3.8 which keeps me below 70 degrees. Using a Mugen Scythe with some high end paste which I forget the name of. i7 920 btw. I think it starts to throttle itself down at 110 degrees..at least that's what I read..seems a bit extreme to me.
Ian |
|
benwish
Premium
join:2001-01-06
Haverstraw, NY
clubs:
| reply to tempnexus
4.0 GHz with 1.36V get me 37C or 98F no problem.
4.4 GHz at 1.65V are in the 45-48C range, 113 F.
All numbers are after booting into OS, idling for 2 minutes.
Under Prime running for hours i saw the chip heating up to 58 C, 140 F, and it was stable.
Never had a heat related slowdown.
B |
|
tempnexus
Premium
join:1999-08-11
Boston, MA | What motherboard are you useing or would recommend for a nice OC setup?
THe asus P6T's or the EVGA's ? |
|
Thislilfishy
join:2008-10-28
Orangeville, ON
·TekSavvy Solutions..
| reply to benwish
said by benwish :4.0 GHz with 1.36V get me 37C or 98F no problem. 4.4 GHz at 1.65V are in the 45-48C range, 113 F. All numbers are after booting into OS, idling for 2 minutes. Under Prime running for hours i saw the chip heating up to 58 C, 140 F, and it was stable. Never had a heat related slowdown. B You on water with those numbers? I idle at 2.2Ghz just under 50C. Something ain't kosher. I max under prime at about 70C (core temps). I don't see how you could get those numbers unless the version of coretemp I have is reporting the wrong values.
ian |
|
benwish
Premium
join:2001-01-06
Haverstraw, NY
clubs:
| Nope, these numbers are on air. I retired my WC setup.
If you are running your 910 at 2.2GHz you are UNDERclocking you chip.
If you get at these speeds, and i assume low voltage (1.2-1.25V), 50 deg Celsius, there is a major problem with your cooling.
Have a look at »www.evga.com/forums/tm.asp?m=642527
There are some pretty good OC-guides with settings and setups. Thats where i got the basic ideas and just fine-tuned my setup.
As far as accuracy of the core temp data, that is indeed a problem.
The data is only a readout from the chip itself, no actual probe is attached. I once shut down the fans on the V8 and let it sit idle for 20 min. With a cheap IR laser gun i measured a dT of 4 deg C. Given that the heat is already dissipated through the fins with much airflow, i was fine with the result.
I have to add that i have a great case setup. 3 fans sucking air in and 5 out, vertical airflow. This machine is in my office with ambient of 70-71 F.
B
|
|
Thislilfishy
join:2008-10-28
Orangeville, ON
·TekSavvy Solutions..
| said by benwish :Nope, these numbers are on air. I retired my WC setup. If you are running your 910 at 2.2GHz you are UNDERclocking you chip. If you get at these speeds, and i assume low voltage (1.2-1.25V), 50 deg Celsius, there is a major problem with your cooling. Have a look at » www.evga.com/forums/tm.asp?m=642527There are some pretty good OC-guides with settings and setups. Thats where i got the basic ideas and just fine-tuned my setup. As far as accuracy of the core temp data, that is indeed a problem. The data is only a readout from the chip itself, no actual probe is attached. I once shut down the fans on the V8 and let it sit idle for 20 min. With a cheap IR laser gun i measured a dT of 4 deg C. Given that the heat is already dissipated through the fins with much airflow, i was fine with the result. I have to add that i have a great case setup. 3 fans sucking air in and 5 out, vertical airflow. This machine is in my office with ambient of 70-71 F. B Yes and no, it idles at 2.2 with turbo on, and runs under load at 3.8. Many threads I've read have confirmed my temps as normal, perhaps you are reading the Delta to TJS?
Ian |
|
benwish
Premium
join:2001-01-06
Haverstraw, NY
clubs:
| said by Thislilfishy :said by benwish : Yes and no, it idles at 2.2 with turbo on, and runs under load at 3.8. Many threads I've read have confirmed my temps as normal, perhaps you are reading the Delta to TJS? Ian I don't understand how you get only to 2.2.
The i7-920 is standard 20x133= 2.66 GhHz.
Turbo goes to multi 22, all on stock voltage.
I run my 920 (C0 stepping) at 21*190 with 1.388V = 4 GHz.
Temps are in the upper 30's C on air with a Coolermaster V8, on idle.
Only when you i went 1.55V to the cores, i ran into heat problems, thats when i used my WC setup.
My limit was 22*200, resulting in 48C idle, but still prime stable with temps in the lower 70's C.
The only thing i did, was making sure the chip and the V8 have perfect contact and the V8 has a lot of free airflow.
If i compare the core temp data with the bios temp data, they are +/- 1 deg C, ergo correct.
I know i have a very good chip, out of the box it did 4GHz with relative low voltage. Somewhere i have the org. box with the ID on it. I think it was one of the very first batches they sold. I got it from microcenter and made the guys pull out 20 boxes until i found the one mentioned on EVGA forums.
B
|
|
Thislilfishy
join:2008-10-28
Orangeville, ON
·TekSavvy Solutions..
2 edits | Idle:
100% load under Prime95:
Cooling Solutions (HAF 932 w/Mugen2 by Scythe, Push/Pull Fans):
Reference Link For Temps:
»enthusiast.hardocp.com/article/2···ing_heat
To be honest I don't see how your numbers are possible. As you can see I am running a bit warmer then the link provided, however those tests were done on a bench in a room that is a bit cooler then my computer room (currently 24.8 C). You have your computer outside or in the fridge or something? I was running core voltage at 1.16V, which was stable under prime for over a half hour (I got bored) however it would occasionally lock up when booting. So I pushed the voltage up a little in BIOS. So far no issues. Even at 1.16V I was only a degree or two lower then it runs now.
Ian |
|
benwish
Premium
join:2001-01-06
Haverstraw, NY
clubs:
| 
Overclocked to 3.6 | 
At stock |
Lower 30's and over-clock is quite possible as you can see |
|
Thislilfishy
join:2008-10-28
Orangeville, ON
·TekSavvy Solutions..
2 edits | reply to tempnexus
They aren't reading core temp sensors:
"Temperatures for the CPU will continue to be measured using our Sperry Digital 4 Point thermometer."
The Mugen 2 measured very close occasionally beating the True 120 BTW...the cost savings is bonus, the MX-2 paste come free...hehe. Nice review though.
Ian
Edited 'are' to 'aren't'. |
|
tempnexus
Premium
join:1999-08-11
Boston, MA
| reply to tempnexus
Well I just bought:
920 D0 stepping
Asus P6T Deluxe V2
OCZ 1600 RAM 8-8-8-24
Will be using it along with custom build WC with a retrofitted Swiftech waterblock.
Any tips in OCing via ASUS P6T Deluxe? Any BIOS issues that I should be aware of esp between D0 and OCZ ram? |
|
Thislilfishy
join:2008-10-28
Orangeville, ON
·TekSavvy Solutions..
| said by tempnexus :Well I just bought: 920 D0 stepping Asus P6T Deluxe V2 OCZ 1600 RAM 8-8-8-24 Will be using it along with custom build WC with a retrofitted Swiftech waterblock. Any tips in OCing via ASUS P6T Deluxe? Any BIOS issues that I should be aware of esp between D0 and OCZ ram? Not sure about the version 2 board, it's a good board, but the original had some higher end components. My understanding is the it has the same overclock functions though, which means it's very simple to do. One thing to watch for when in XMP mode is that as you make clock adjustments it will modify the voltages for you. It maxed out my voltages on it's own, so you may want to drop them down and work back up until you find a stable point. There are a tonne of online guides for OC'ing this board...so do some reading first. Be sure your water block is attached well and working 100% before OC'ing...natch.
Ian |
|
