Dissapointing Chip :(

Cyber-Mav said:
are you testing the memory everytime you clock the htt up? if not then i guess that your a noob to overclocking and advise you to read the basics guide over at tomshardware.com
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Mav why do you always come out with such pants comments? I did my first overclock with one of these chips, and didn't check the memory? Does that make me a noob? Mine runs fine so i guess i must be :rolleyes:

Btw, i got my 3700 to 2.7 stable on stock volts, it boots with 2.8 but i cant change the voltage on my motherboard
 
H3x0rc!st said:
Memory - 2 - 2 - 3 - 5 on a 166 divider @ 2.75v
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That could be you problem, my msi board didn't like running at cas 2 on a divider and was a major stumbling block for me for a long time till i realised thats what it was and it wasn't my cpu maxing out. Try putting it at cas 2.5 or really slacken off all the timings to rule out ram. Thats what i did then found the limit of the chip and then tightened up the timings again. As you can see in my sig the best i could get on a 166 divider is 2.5-3-3-6 compared to 2-3-2-5 that it should run at. Also my v-core runs at 1.56v and is used 24/7 so you've still got a bit of headroom voltage wise.
Almost certian it will be your ram timings that is holding you back.
 
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dale1uk said:
That could be you problem, my msi board didn't like running at cas 2 on a divider and was a major stumbling block for me for a long time till i realised thats what it was and it wasn't my cpu maxing out. Try putting it at cas 2.5 or really slacken off all the timings to rule out ram. Thats what i did then found the limit of the chip and then tightened up the timings again. As you can see in my sig the best i could get on a 166 divider is 2.5-3-3-6 compared to 2-3-2-5 that it should run at. Also my v-core runs at 1.56v and is used 24/7 so you've still got a bit of headroom voltage wise.
Almost certian it will be your ram timings that is holding you back.
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Good advice :)

Before I start overclocking any chip, I set a low divider and slacken the timings right off so that memory isn't an issue.

When I've maxed out the CPU, I then start to up the divider and tighten up the timings until I reach the limit.

Stan :)
 
Hmm, come to think of it my old P4 MSI mobbo HATED cas 2, it wouldn't even post if i set it to cas2 in the bios, even with ram i knew would run happily at cas2.
 
my board runs no probs at cas 2 when the ram is running at stock speeds with no divider, but as soon as the divider goes on it either wont boot or will be unstable with cas 2.
 
dale1uk said:
my board runs no probs at cas 2 when the ram is running at stock speeds with no divider, but as soon as the divider goes on it either wont boot or will be unstable with cas 2.
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Ditto, trust me, not many people run an overclocked P4 1:1, i was on a divider also.
 
Prime stable @ 245FSB so 2.7ghz, thats a 500mhz overclock for my 3700 san diego so not too bad :), tried 250FSB but prime found errors quickly. Do you think this is the absolute chips limit or can watercooling allow me to go higher? i mean temps aint high at all with my Freezer 64, full load @ 42c
 
well ive been playin with my 3700 again today still cant get 2.7 but ive got 2.6 rock solid at 236x11 memory DDR400 so at 236mhz with 2.5 3 2 8 best i can do so far tried 2.5 2 2 6 wont boot, gonna try 2.5 2 2 8 later :) might be some help to ya oh volts are 1.45 CPU, 2.8 Mem.

 
nice mate, im running my chip @ 1.425v + 6.6%, bit dissapointed with volt options for MSI boards, might have to get a DFI next time. im gonna experiment with memory timings because it seems silly that i get prime errors when the memory is only running @ 192mhz 2-2-3-5 166 divider, must be an MSI thing as i was able to get higher slackening the timings
 
Maxed @ 245FSB, wont go any higher and i dont wanna put max vcore (1.45v + 10%) when im on air tbh, not sure if i could get more out of it with my watercooling anyway

 
Your v core is only 1.45v, on good air cooling you can put it up to 1.6 max. Don't know why it hasn't added the extra 10% to take it to 1.57v?? Can definitly add move voltage and push it more.
 
seems stable @ 250FSB = 2.75ghz, nearly running max volts tho but still only @ 42c full load ... wish there was a way to get more volts from this motherboard as then i would be tempted to use watercooling
 
What voltage and memory timings have are you running to get it stable at that clock?? Takes me 1.56v to get mine 100% stabe at 259x11 and thats run almost 24/7 on air with an idle temp of around 30'c.
Also you say you wish you could get the board to output a higer vcore, whats the max it will run at?? Only that board should go up to 1.55v and then be albe to add the extra % on top of that resulting in around 1.65v maybe a little more. Check with cpuz what the vcore its actually running at and see if that matches up with what your setting in the bios. Adding more volts shouldnt be a problem with that board.

Even if thats the highest you can get that chip, its still a good clock for whats now a £90 cpu :)
 
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Cyber-Mav said:
are you testing the memory everytime you clock the htt up? if not then i guess that your a noob to overclocking and advise you to read the basics guide over at tomshardware.com
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Why do people always use that word. It sucks big style... Oh he might be a 'noob' at oc but you didn't help his post what so ever.

Can't give no advice in this post as I don't overclock. Just thought I would point out. Kinda rude aint ya ?
 
prime errors after an hour @ 250fsb so im just gonna leave it @ 2.7ghz 245FSB on the 166 memory divider, running at 1.425v + 6.6% as its just about 100% stable at this, thx for the help guys ... i might sell this chip and a few other components and upgrade for either conroe or get a DFI LanParty motherboard and an opteron and get my watercooling re-installed and overclock the t*ts off it :)
 
hey i manged to just get 2.7 stable on my 3700 other day trying very hard 2.8 wont pass prime no matter what i change. but i got this to be prime stable for 10hrs
245 x 11, HT x 4, Ram DDR 400 (1-1) 245mhz 3 3 2 8 best i can get on my chip quite happy :)
 
:) nice mate, im kinda happy with mine too, i can certainly tell the difference in speed between this and stock, games for instance seem much smoother but the thing about me is i always wanna go that little bit further, im never happy hehe
 
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