Clawhammer 3700 753 stuck at 2.6ghz Whats giving out?

Manifest

Manifest

Manifest

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18 Oct 2002
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Bristol
ASUS K8N-E Deluxe
3700 clawhammer @ 12 x 218 = 2616mhz 1.6 volts
Geil Value ddr 2 x 512 (2.5-3-3-6) 2.7 volts
Sapphire x800xl 455/504
Soundblaster Live 5.1 (If that matters :))

When ever i increase the ram to 220 the clock is very unstable and will crash quite quickly in a stress test specially something like 3dmark 03. The current setup as listed at the top is uncrashable i thinks, i gots watercooling which keeps gpu at 45 max load and cpu the same maybe a couple degress higher from time to time.

If i knew what was the weak link i could focus on that but i just dont know. Is it simply the ram cant handle the extra mhz or is it my northbirdge over heating or my cpu crashin which cant be from temps.

Any thoughts on what to try?
 
whats ** htt set at?

have you tried a lower multi and higher fsb?

have u divided the ram?

whats the cpu temp when u run it at 2616mhz?
 
xirokx said:
whats ** htt set at?

have you tried a lower multi and higher fsb?

have u divided the ram?

whats the cpu temp when u run it at 2616mhz?
Click to expand...

No i havent tried that yet actually, guess that'll let me know how fast my ram can run.

The HTT 218 isnt it, well my idle temp is 38C, i am cooling a overclocked x800xl too but load temps never stretch past 47C.
 
Mine had similar problems until i dropped the HT multi down to 3x. I then got 2.75 Ghz (11x250 1:1) easily and have even got up to 2.795 Ghz (11x254 1:1) on air.
 
For who? If you mean me then at 2.75Ghz i am getting 45 degrees C when testing with prime. I use a SI-120 with a 120mm Thermaltake Thunderblade on full chat (2000 rpm / 78 CFM) but it is bloody cold up here which helps. At 2.53Ghz i am getting 25 idle/37 100% load. System temps are 22 degrees.
 
That ram's only good for about 215-220mhz @ 1:1 so get it on a divider.

Also once you start setting the fsb over 200 make sure the HTT ratio is at most 3x. Going even lower for stability shouldn't make any difference to your benches but the rule of thumb with that setting is just use whatever lets the computer boot.

Edit: You should be good for about 2600 to 2700mhz (easy) on air with that processor but I had to put 1.70V through mine to hit 2800mhz.
 
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Last night i tried upping the ram to 220 and upping the voltage to 2.8 and cpu to 1.7 but this just wouldnt let me boot. Had some wierd error about ntsk or somming like that. Which basically meant i couldnt boot with that.

I can get to windows at 220 2.7 volts in ram and cpu 1.6 but no benchmark lasts long before it crashes.

Ok ill set the htt ratio to 3x

Right i found a ram devider program which u type ** fsb into and it calculates the rest depending on the devider u use, tis pretty good. With the devider set to 166 and fsb at 218 the cpu stays at 2616 but the ram is running at 174. So idealy i want to be running the same multiplier and run the 166 devider and get my ram up to as close to 218 again?

Edit now i have devider at 166 and htt? at 220 and the ram is running at 178mhz or somming. So what about performance loss with using a devider, running the ram slower can be to helpful but u r gaining cpus mhz.
 
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Ok sorry to post twice but ive edited that last post so many times now.

I think im done overclocking this setup check this out, 230 seems to be the maximum my htt will do, tryed upping cpu voltage to 1.7 but nothing would post still at 232 htt. I guess this means i could get some uber nice ram and run it at 230 1:1 but for now im 166 devider. Anyway check these screenies.

CPUOC.jpg

RAMOC.jpg
 
What do you reakon that will do man, im sure its the HTT which is at its max hence cant boot at 232 HTT. Surely ram timings wont affect that?

My temps are still awsome 36C idel right now and 41 load last night, must be these cooler days.

Is ther a way of getting a devider between 200 and 166, is just my rams running at 184, anyway of increasing this somw without cranking the htt some, i doubt ther is bu thought id ask?
 
I'm sure it's your HT Multiplier causing the problem.

RAM isn't an issue. Assuming of course your CPU is capable of going higher. 230x5 = 1150 which is 150 over spec.
 
m3csl2004 said:
ram 1:1 ;)

nice clock for a claw btw
Click to expand...

Yeh suprised my self how high its got, my gfx card is overclocked too on the same loop and still its rock solid. Ive heard that the extra cache on this chip can make it a bit harder to oc but some dude with a thread labelled '754 overclock' got his 3700 clawhammer up to 3.2. Id love to hit 3ghz but i doubt my motherboard would do it.

BigDom said:
I'm sure it's your HT Multiplier causing the problem.

RAM isn't an issue. Assuming of course your CPU is capable of going higher. 230x5 = 1150 which is 150 over spec.
Click to expand...

Yeh i dont know a hundred per cent that the cpu can go any futher but i guess ill find out on a better motherboard and better ram.
 
Nice clocks for only 1.55v, I can run mine at 2.85ghz but it needs over 1.7v

I was going to take the IHS off mine for a bit more speed, but never got round to it.

This clocks much better than my old 3400+ Newcastle, that was rubbish!
 
Hefner said:
Nice clocks for only 1.55v, I can run mine at 2.85ghz but it needs over 1.7v

I was going to take the IHS off mine for a bit more speed, but never got round to it.

This clocks much better than my old 3400+ Newcastle, that was rubbish!
Click to expand...

That CPUID got the volts wrong, my new CPUID that i downloaded last night shows that the cpu is at 1.65. I cant get any higher for now cause my motherboard wont go past 230 htt, i could do with awsome ram or maybe if i could get a multiplier above 12.

Check this out, has got pics of my actual setup, and my housemates which i help build.
 
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