Athlon 650 watercooled...slow performance

[freedom]

I'm running an Atlon slot A 650@750 and sometimes 800 using a water block.The problem is that the water temperature in less the 30minutes goes always until 40-41 degres celsius(I don't know about F.) and I cannot go over 750 or 800mhz.Right now water is going thru the tubes in a small camping cooler.Does someone got some adice helping me to make my system more stabile at 800-900 or more mhz??
Thank you for your help

 

[Dark4ng3l]

ok well it depends if you have a .25 or .18 micron chip. If you have the older .25 chip your lucky you even got that much out of it. if you have the .18 than try seting the cache to a lower divider.

 

[CTho9305]

I dont know if the cooler/radiator is doing its job too well if your water is that warm (what's ambient temp)

 

[phatstyl]

CTho9305 is right, thats a little warm

 

[freedom]

For "Dark4ng3l":
How can I know if my processor is .25 or .18 ,and where can I find instructions to set the cache?

For "CTho9305"

Due to small budget my cooler is a polyester one to keep the water as more that I can less than 35-40.The ambient temperature is around 25-30(I live in miami).Does someone know where finding a radiator around the net??The only sites that I found got terrile prices like 30-35$ for a fanned piece of old crap.Is it possible going in a appliance junkyard and build one??
Than you for your pacience and your answers

 

[CTho9305]

For the cache: there might be a setting on your GFD. If not, there might be an option in your mobo bios (what is the mobo? if it is a k7v, go to k7v.com and get the latest beta - it has an option. the 1007 might also have it)

For radiator: if only I knew where to find one!

For .18/.25: what's the numbers on the CPU? according to this page, if the last letter on the top line is a C its a .25, if it's an A its a .18.

 

[CTho9305]

oh, if you look at the core, a .18's core is smaller (about 1/3 as wide as the total ceramic, where as a .25 is like half the size of the ceramic) look here for the pics comparing it... (scroll down to 31/01/00)

 

[Dazmite]

The water will warm quickly, as it takes heat from the processor, it cannot cool fast enough. I experimented even, by putting a cooler filled with a water/antifreeze mix in a small dorm size fridge. The mixture would get down to 40F over night, but once PC was running, temp would reach 75F within an hour. Now I almost forgot, this was also with a 72 watt peltier. Same principles should apply. It takes more to cool water than air. A larger water storage tank may help. This site has many water cooling hints.
Daz

 

[freedom]

For"CTho9305"
.
I think is a .18 and my mb is a gigabyte BVK1A.Unfortunally on my gft i have clock and voltage only.Do I have to change the second one??

 

[WarCon]

You might try an external reservoir (more volume) to go with your radiator, also you could use a peltier to actually cool your chip.

* To Daz - You never did tell us what your chip was at with the peltier, 75F is not bad for the water side of a peltier cooling setup. Since thats not the temp touching the chip, the cold side of the peltier is.

 

[freedom]

I tryed peltier befor using watercooler and I don't know why ,but after like 5-6 seconds the device started to be realy hot in both parts of its surface.....both peltier that i tryed.Sicerely I don't trust in peltiers..the thing that I weanna try is finding a nice radiator,but aution sites such eb@y don't have anybody selling these.

 

[WarCon]

Yeah if you haven't increased your Vcore, then thats your problem. If you really want performance outta that processor then you need to up it to as high as is needed for the overclock you want. I am running my Duron 600 @ 950 but I need to use my boards full Vcore jump to 1.85v to achieve that. Also are you using any heat sink compound on your waterblock or your cold plate (assuming you are using one). If not you should be.

 

[WarCon]

These FAQ's are from Leufken Technologies.............

Q: Why does my peltier get hot on both sides when I plug it in?

A: Although your peltier will get cold on one side and hot on the other quickly it only takes a few seconds for the heat to overpower the cold side. Without a heatsink a peltier is useless.

Q: I ran my peltier without a heatsink for a while and the leads fell off- Why?

A: Peltiers can get as high as 600 deg. F. The solder used on the connections is of a low temp designed to 'self destruct' to prevent a fire or other damage. NEVER RUN A PELTIER FOR MORE THAN 5 SECONDS WITHOUT A HEATSINK!

Q: My heatsink is hotter than before- Why?

A: The heatsink is drawing the heat away from the processor and absorbing heat from the peltier itself. That is where the TDelta comes in. The Tdelta is temp. difference from hot side to cold. So remember your temp. on the cpu will be much lower. YOU MUST READ FROM THE COLD PLATE OR CPU DIE FOR ACCURATE TEMP. READINGS.

Q: When I turn off my computer will the heat from the heatsink pass trhough the peltier to the cpu causing damage?

A: No. Some heat will pass through, but not much. The average processor is made to run 185 deg. F working. The hottest you heatsink should get is 115-125- far away from a damage point.

Hope this help!!