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Home / I-Opener Areas / I-Opener Technical Stuff New web site for I-O Mods

New web site for I-O Mods (modified 0 times) Robot Profile Today I put up a web site showing the mods I use on my I-Os. Check out my ideas for keeping your I-Os cool and VERY QUIET. www.sheldon.com/io-mods Robot 02-03-2002 22:08:17

RE:New web site for I-O Mods (modified 0 times) *SF* Profile \ http://www.sheldon.com/io-mods Nice Website........ You might want to mention Audio Mod is for Yamaha sound chip (Pre-Version 5 I-Openers) 02-03-2002 23:06:51

RE:New web site for I-O Mods (modified 0 times) Ragnar1 Profile Robot, Nice job! That's simular to my setup, but adding the tape surely improves it. I will add the tape to my V4b that uses a simular setup and see how much that helps the temps. This is definitely the way to go if you have several iopeners to modify. It is way more economical that the dc-dc mod. What speed are you running your processors? I would think you would be able to get them up something close to 275mhz safely with your mods. Good show!! Ragnar 02-04-2002 11:59:07

RE:New web site for I-O Mods (modified 0 times) mp3boombox Profile | Email You also should menmtion that thatsnot the opamp audio mod. 02-04-2002 12:26:54

RE:New web site for I-O Mods (modified 0 times) ckbone Profile Nice looking setup.....However, I do have doubts about the cooling efficiency of your cut-up stock heatsink, and your very low volume fan. When I set up my three I-Openers, I tried using the stock heatsink with and without a variety of fan setups. I was never happy with the temps. The CPU temps always ran over 50c...course if you're happy with a hot processor, so be it. I notice you don't list any specific CPUs, nor do you list any temps. For anyone attempting to duplicate this setup, be aware of one important fact. The stock heatsink does not contact the CPU evenly on all I-Openers. The four mounting points are at different heights on every I-Opener. They vary in height of over 40thou....making for an iffy contact with your CPU. IMHO...a standard socket 7 heatsink with it's two mount clips, is far superior to the setup shown here. I know my heatsink is contacting my CPU perfectly flat....with this setup you'll never know....at least until you see smoke. 02-04-2002 17:28:26

RE:New web site for I-O Mods (modified 0 times) Robot Profile Everyone, Thanks for the replies, comments, and suggestions for my web site. *SF* I changed the web page and stated that the sound circuit was for pre version 5 I-Os with the Yamaha sound chip. Ragnar1 I changed the web page to state I am running my I-Os at 266 mHz and added some temperature readings from the BIOS. Mp3boombox I added that the sound circuit I am discribing is not an amplifier just a clean line level output circuit. Ckbone I added some BIOS temp readings from the BIOS to the page. This evening I took some temperature readings from my IO with a digital 2 probe thermometer. The room temperature on the desk was 72F. After running the IO for 4 hours, playing MP3s continuously while serfing the web, the air coming out of the IO at the CPU area was 96F. I shutdown and quickly turned the power back on, got into the BIOS and the CPU temp was 102F and the system temp was 109F. This is NOT my opinion. These are the facts. I noticed my cat purrs louder than my IO sounds! Thanks everyone, Robot 02-04-2002 22:26:16

RE:New web site for I-O Mods (modified 0 times) ckbone Profile Taking external temp readings where the air exits by the CPU gives only a partial indication of hot hot the CPU is running. This reading is wholly dependant on the efficiency of the heatsink, and the routing of the air over the fins. In your case, the intake air is not blowing directly on the CPU, and much of the exiting air has passed around the heatsink, without actually passing through the fins. Add to this the horizontal orientation of the fins, which is contrary to normal thermal flow, and you get a hot CPU. If you can put a probe directly on the CPU, your reading will be more accurate. Also.....the stock temperature sensor is not directly on the CPU, so readings you get from it are also not really accurate. By the time you shut down, reboot and see the readings in the BIOS, the temps will have dropped 10c or more. Heat kills.....and I don't think a slightly noiser fan will bother your cat either. 02-05-2002 05:37:53

RE:New web site for I-O Mods (modified 0 times) mp3boombox Profile | Email If you would like i can email yousome images of my cooling system which is a SIDE BLOWING system with a 1"x1" fan and a wraped heat synk. Very effective for its small size. Also any other images you can think of that i might have already taken for other mod's http://members.panax.com/bachh/ My EZnet 200 tower, hacking page. 02-05-2002 21:19:54

RE:New web site for I-O Mods (modified 0 times) Robot Profile MP3boombox, Yes, I would like to see your cooling system. I put an email address on my site today too. It is: robot@sheldon.com I tried a side cooling arrangement once, but mine was rather noisy and didn't cool very well. Robot 02-06-2002 21:19:27

RE:New web site for I-O Mods (modified 0 times) KneuB_2 Profile | Email Very nice web site. Your HD mount is VERY similar to my first HD mount. There is one point that isn't quite accurate 100% of the time however. On my first i-opener the RF shield literally rode on top of the heat sink. Locating the mounting screws on top of the heat sink would have forced "something" to wrap for everything to fit back together. Thus I used the side holes on the HD for mounting. Great web site though. 02-07-2002 16:08:14

RE:New web site for I-O Mods (modified 0 times) Robot Profile About the screws pushing on the RF shield. I use I-O screws to hold the brass mounting tabs to the heat sink and thin headed screws in the drive. They do touch the RF shield a little but it doesn't seem to be a problem. Screws that have a thick head would be a problem. Glad you like my site. Thanks Robot 02-07-2002 20:58:29

RE:New web site for I-O Mods (modified 0 times) Ragnar1 Profile Okay, I added the tape to my V4b, and I must of covered up more that I thought. Temps now run 5 degrees F higher than without the tape. But max motherboard temp is still only 128F. The unexpected benefit is the amazing improvement in sound. It's WAAAAY better than my V5. I may remove a little of the tape behind the hard drive to see if temps don't drop down to where they were, but I am definitely going to leave the tape behind the speakers. 02-08-2002 19:36:05

RE:New web site for I-O Mods (modified 0 times) Robot Profile Over the past weekend I worked on two friends IOs. I had the hard drives out and connected to my 800 Pentium system to quickly install about 6 gigs of MP3 files. One of the drives was an IBM Travel Star and the other was a Fujitsu drive. I defragged the drives and then loaded the 6 gigs of Mp3s. The drives were setting on a mouse pad connected to my system with a long IDE cable. The IBM drive was very warm, almost hot at the end of the load. The Fujitsu drive was still cool at the end of the load. I have always used Fujitsu drives in my IOs just because they were quiet, reliable and I got a good deal on them about a year ago. Maybe the difference in the amount of heat different drives produce accounts for the difference in the results people are getting with my cooling method. 02-11-2002 22:12:02

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