V8gent

I've just purchased a P4C D1... I've noticed the heatspreader is far removed form being smooooth. is there a reason why I shouldn't lap it?

there sure is a correct answer note: although the term "negative case pressure" is incorrect it suits a valid explanation that everyone can understand. for case temps to remain decently cool, you need to remove the hot air . the ideal acheiveable setup is to have a slight amount of "over-exhaust". air is incredibly effective at filling any potential vacuum and sucks from high pressure to low pressure areas as opposed to it being high pressure being pushed fromj high to low. by setting up a case to have a slight "negative" internal pressure, you're ensuring air flow. of course fan placement will dictate just how good the air flow but at least if you negative in-case pressure you have airflow and that's the primary objective. if you're serious about setting up case air flow up properly then calculate the total CFM being pushed into the case and try and try to get as close as 10% higher CFM air extraction. as I mentioned earlier, the key to keeping case temps down is removing hot air. secondary to that facilitating cool air entry into the case. negative case pressure ensures more air flow than positive pressure because air is much better (faster) at filling vacuums and moving into areas of low pressure than it is than it is moving away from areas of high pressure. as well, positive case pressure can lead to hot air swirls, hot spots per se'. these are not good but depending on where they are, they may not be that bad. still, there

actually ... 3dB is a doubling in sound energy. the average person will approximate a 10bB increase with a doubling in audible sound volume. some info: 0dB - threshold of hearing 10dB - soft whisper - 1/8th loudness of ref 30dB - public libary - 1/2 loudness of ref 40dB - kitchen or bathroom - reference level 50dB - quiet office - 2 x loud 60db - normal office, normal speech - 4 x loud 70dB - noisy restaurant - 8 x loud 80dB - construction site - 16 x loud 90dB - busy city street, lawn mower - 32 x loud 100dB - jet takeoff at about 500m - 64 x loud 111dB - my street registered, daily driven V8 Torana at 7000rpm revs (this is true!) - 128 x loud 120dB - high-energy rock concert - 256 x loud 130dB - shotgun, low passing F16 at full noise - 512 x loud

what I find funny is that it appears his vid card has a Zalman quiet HS

off-topic grrr @ native support for water-blocks. what the heck, native? ffs, when will the PC IT industry would stop phucking up the english language? /off-topic looks nice though.

thanks. would anyone here be interested in me reporting the results?

ok, thanks for all the replies it seems that people here are of the opinion that the Aquarius II would about equal the slk-800/high speed fan. since I don't want to have anything that's louder than what I have now, I think I'll go with the Aquarius and use the SmartFan2 of the V9 and run that at 3000rpm. this should cool the Aquarius system a little better than with supplied fan give and possibly save a few db's in the process! oh and thanks for the compliment BerZerK cheers

thanks Psywar I'm interested to know why recommend Aqaurius over the SLK-800.

er OK. I appreciate you putting the time in to reply to my post unfortunately it's doesn't really help me. specifically, I'd like to know which of these two products will reduce my CPU core temp the most, given the speed and voltage at which I run it. cheers.

hi, I currently have a lapped V9 with the fan set at a quiet 3300rpm cooling my overclocked XP2100+ 'b'. the CPU is running at 2200MHz (11x200MHz) @ 1.65v. with an ambient room temp of about 22C my CPU and board temps are as follows: idle: CPU in-die - 52C CPU below die - 43C mobo - 35C load: CPU in-die - 61C CPU below die - 50C mobo - 40C I'm not really interested in overclocking my CPU any higher, or reducing noise (as it's quiet enough for me) and cost is not an issue, I would however like to reduce the CPU temp under load. after doing a bit (or more actually) of research, I've decided to to bring my choices down to either the Aqarius II or SLK-800 on which I'll put my SmartFan on. please don't suggest any other products, I've finalised my choices to these two items only. I've read a number of reviews on both products and given their intended purposes they scored well. I realise the Aquarius II is a low-end water cooling kit but compared to the HSF's it was reviewed against, it did quite well. unfortunately I haven't found any reviews or usenet comments that offer a comparative assessment between the Aquarius II and SLK-800 although one reviewer made the comments that he thought the Aquarius would be marginally better. so, having done all this research and not getting all the info I'm after, I find myself here asking for peoples opinions and experiences with the two particular products I'm looking at. although I'm confident that the Aquarius II can cool my CPU better then my modded V9, I don't just how much better it would be, nor do I know how much better again a SLK-800 with a medium speed fan would do. tia for comments, suggestions, etc