New Prescott

SteveI · #1 (**permalink**) 17th December, 2004, 02:12 PM

I just popped in a brand new 3.0 into my system... Mooky's been building my expectations, so I'm pumped, trying to oc this puppy.

Running asynch 5:4 to test, so far
3400 stable at stock
3750 unstable @ 1.4375v

I'm trying 3600 now @ 1.3875v.

If you are curious, this is my main rig in my sig. If anyone has any advice, I'm all ears.

alexkerhead · #2 (**permalink**) 17th December, 2004, 02:17 PM

Quote:

Originally Posted by SteveI

I just popped in a brand new 3.0 into my system... Mooky's been building my expectations, so I'm pumped, trying to oc this puppy.

Running asynch 5:4 to test, so far
3400 stable at stock
3750 unstable @ 1.4375v

I'm trying 3600 now @ 1.3875v.

If you are curious, this is my main rig in my sig. If anyone has any advice, I'm all ears.

Stock cooling aint gonna cut it
http://www.newegg.com/app/ViewProduc...108-021&depa=0

SteveI · #3 (**permalink**) 17th December, 2004, 02:27 PM

Not a problem... see sig, using an SLK 948u with 9cm Smart Fan @ 3200rpm... nice and quiet.

Temps are holding at 59c CPU and 81c PWM. (3600ghz still testing)

I think it may have failed at 3750, 250fsb because of the northbridge... I haven't changed the NB voltage at all. How much voltage does the i865 need to run 250+ mhz?

SteveI · #4 (**permalink**) 17th December, 2004, 03:02 PM

I think I am topping out at 3.66 ghz @ 1.4375v... temp holding @ 58c CPU.

It just doesn't want to hold at 3.7ghz. I don't want to try higher voltage than where it is.

SteveI · #5 (**permalink**) 17th December, 2004, 03:13 PM

Temps seem fine(stays under 60c), but I'm worried about voltage.

For long term usage, is +0.1v (1.4625v) safe for a prescott??

I think it might need at least that to hit 3.7ghz.

mookydooky · #6 (**permalink**) 17th December, 2004, 03:27 PM

That's not even a 10% bump. I see guys running 1.7V and higher with high end cooling. The thing has a 3 year warranty anyway.

SteveI · #7 (**permalink**) 17th December, 2004, 03:40 PM

Quote:

Originally Posted by mookydooky

That's not even a 10% bump. I see guys running 1.7V and higher with high end cooling. The thing has a 3 year warranty anyway.

ARGH!!!
OK, I'll push a bit more... How high did you end up with the voltage on the toaster? Do you really think 1.7v is safe? Even with the warrantee, I've seen CPUs loose their overclockability.

I know 3.66 is stable, so I think I will shift gears and test out the memory a bit.

EDIT: looks like 3715 may hold with 1.4625v.... Already failed at 3740. (NEVER MIND)

Lazgoat · #8 (**permalink**) 17th December, 2004, 04:52 PM

Hey SteveI, how does this pc compare to your AMD rig?

SteveI · #9 (**permalink**) 17th December, 2004, 05:04 PM

I think I'm done... I've maxed out the HyperX at 240fsb, cas 3.0-3-3-8 @ 2.8v, seems like it will hold.

Rig is now running synchronous... 240.5 x 15 = 3607.

Funny thing, I tried my old buffalo PC3700, and got identical results. So I stuck with the HyperX. The sinks make me feel better @ 2.8v.

Throwing another 0.05v at the CPU didn't get me even 100mhz, so I think I will stop here, and start stressing the system more.

The sun went down since I started, and the temps have dropped accordingly.

Prime, FAH, Sandra, 3dmark...

SteveI · #10 (**permalink**) 17th December, 2004, 05:08 PM

Quote:

Originally Posted by Lazgoat

Hey SteveI, how does this pc compare to your AMD rig?

They really don't compare well. Aside from folding, the rigs do different things. I like HT... gives better response in general. However, the NW was disappointing for real hard core crunching like video encoding. I found that the NW@3.2 HT and dual channel, would actually take longer than my Barton@2.2ghz. Odd.

Can't say much about the Prescott yet. Maybe it's all in my mind, but the feel does seem quicker jumping through windows. Just got the CPU this afternoon so I haven't had a chance to really take it for a spin.

3.6ghz is a bit disappointing... After the holidays, I'll take a closer look, see if I can find a memory combination that will go better than 240, and push a bit more. For the next few weekends, I'll be upgrading a few rigs for family and friends.

whatever · #11 (**permalink**) 17th December, 2004, 09:10 PM

wow, cool..... I see more and more of us folks are jumping over to Intel.

I'm happy to see it. I'm still having no bugs. I love it.. I've been playing games all night since i got home from work. Been playing games every day. 2000 points jump in 3dmark is nothing to be laughed at he.. he...

SteveI, welcome aboard. The only way to get higher clocks is to increase the cooling for your CPU. Knock down 20C and see that clock jump..... BAMMMMMM.
Mine's at around 3C and my CPU doesn't seem to complain.

SteveI · #12 (**permalink**) 18th December, 2004, 06:18 AM

Quote:

Originally Posted by whatever

wow, cool..... I see more and more of us folks are jumping over to Intel.

I'm happy to see it. I'm still having no bugs. I love it.. I've been playing games all night since i got home from work. Been playing games every day. 2000 points jump in 3dmark is nothing to be laughed at he.. he...

SteveI, welcome aboard. The only way to get higher clocks is to increase the cooling for your CPU. Knock down 20C and see that clock jump..... BAMMMMMM.
Mine's at around 3C and my CPU doesn't seem to complain.

It's funny you say that... My main rig has been a northwood for the last six months.

Sorry, I'm not in your league with cooling... I'm happy with a big hunk of copper, and a big fan, lol. Temps are staying in the mid 50's which is quite cool for a pressie. My memory is max'ed out at 240mhz, and I like running in synch. I'm getting pretty good performance. And windows just seems more responsive, even compared to my P4 2.8C

XeroHouR · #13 (**permalink**) 18th December, 2004, 07:06 AM

1.7V through a prescott??? 1.55 is the highest I've been told to go. Intel's spec sheets say the one below 1.55 is under warentee. I'm not sure but I've heard rumors that intel an tell when you've put too much through the chip, not sure how, but a 3 year warentee isn't something I'd like to say bye to on a $200 chip(and I ruined my 6800GT warentee lol). Does anyone know where a good place to draw the line of too many volts to run daily is with a prescott? Assuming you can keep it cool that is...

SteveI · #14 (**permalink**) 18th December, 2004, 07:53 AM

Quote:

Originally Posted by XeroHouR

... Intel's spec sheets say the one below 1.55 is under warentee...

That's good to know. The highest I've tried is 1.4875, and I'm 100% stable 3.6ghz w/ 1.4375. If it is still under warrantee, I'd feel comfortable trying 1.5375v to go for 3.75ghz or more. Mine seems to hit a wall around 3.65ghz tho, and doesn't respond well to extra volts.

SteveI · #15 (**permalink**) 18th December, 2004, 09:31 AM

My 3Dmark scores have gone up considerably, relative to the Northwood, in the order to 10 to 30% in score. These were are run with my 9600NP.

alexkerhead · #16 (**permalink**) 18th December, 2004, 10:56 AM

lets see some aquamarks steve ^.^

SteveI · #17 (**permalink**) 18th December, 2004, 11:05 AM

Quote:

Originally Posted by alexkerhead

lets see some aquamarks steve ^.^

I've never run it before... I'll install it and give it a shot. I have no idea what to expect.

EDIT: first time... no idea if this is good....
GFX 2808
CPU? 11120

Total Score 24943

alexkerhead · #18 (**permalink**) 18th December, 2004, 01:33 PM

Quote:

Originally Posted by SteveI

I've never run it before... I'll install it and give it a shot. I have no idea what to expect.

EDIT: first time... no idea if this is good....
GFX 2808
CPU? 11120

Total Score 24943

that CPU scores is great.
goto the aw3 benchmark section and check out some of their scores for comparison.

SteveI · #19 (**permalink**) 18th December, 2004, 01:45 PM

Strangely, my system is 100% stable, but while testing video, I noticed a great deal of tearing in spots... about 1 in 10 tests.

I've isolated the cause down to memory.... The tearing stops if I run asynch, with CPU at same speed and memory slower. Oddly, the memory has been 100% stable at 240mhz, using memtest and prime. Only in video benches, this pops up. Could it be the northbridge giving out just on video tests? System is otherwise 100% stable.