Heat benchmarks for Xenon and Jasper motherboards

**Adrian223** · 06-20-2010, 06:14 PM

So I found that nobody has ever actually produced a heating benchmark out of the various consoles. Having two, I benchmarked them both. I planted four electronic heat sensors on the gpu, CPU, Ana and Hana chips on the xbox (CPU and gpu had heatsinks on). The xenon console, in dashboard peaked 83 degrees on the gpu, 66 degrees on the CPU, 35 degrees on the Ana and 32 degrees on the Hana. In game the gpu peaked at 137 degrees, th CPU at 97 degrees, Ana at 73 degrees and the Hana at 46 degrees. The Jasper console 's gpu in dashboard peaked at 74 degrees, the CPU at 52 degrees, the Ana chip at 30 degrees and the Hana at 27 degrees. In game however the gpu peaked at 143 degrees, the CPU peaked at 105 degrees, the Ana chip peaked at 81 degrees and the Hana at 39 degrees.

After thermal compound replacement on the gpu and CPU, both boards experienced a temp drop of 10 degrees on the gpu and 13 degrees on the CPU.
I put the CPU heatsinks on the gpu and the gpu tempurature dropped by about 23 degrees on both boards.
I placed two mini heatsinks on both the Ana and Hana chips, and both dropped by around 8 degrees.
I reversed the fan and cooling was much more effective, by about 12 degrees.
I cut off the copper heat transfer tube on the Jasper and tempurature increased by 3 degrees on average.
I'm going to redesign the cooling system on the xbox. I'll post pictures when I'm finished.

Note: all tempurature measured in celcius and thermal compound used was arctic silver.

**eurbert** · 06-20-2010, 07:55 PM

That's some nice work!

People are always guessing about 'good' or 'better' results, but it was time somebody figured out the actual values behind it.
I always thought reversing the fans might improve cooling, but I'm really shocked about the 12 degree drop. Definitely gonna try it on some of my more stubborn RROD's.

**Adrian223** · 06-20-2010, 08:13 PM

Yeah, That and the fact that the CPU heatsinks on the gpu caused a huge drop in tempurature on the gpu. Just goes to show that the gpu heatsink is very ineffective. I'm trying to find a way to harness that drop with a transfer tube, and adding a second gpu heatsink. Having that could eliminate rrod.

**eurbert** · 06-21-2010, 09:05 AM

Where can you add a second gpu heatsink? Cuz I can't see any room for another heatsink which touches the gpu (they have to touch the chip, right?).
I have a jtagged rrod without a dvd drive, I'm gonna put 2 cpu heatsinks in that one

**Adrian223** · 06-21-2010, 04:58 PM

You can use a copper heat transfer tube. Cut off the copper tube going to the gpu heatsink if you have a Jasper. It does nothing. If you put the CPU heatsink on it's side next to the actual CPU heatsink, it should fit. Remove the heat transfer tube from within the heatsink and put new ones running to the gpu (just squish it between the treads). Be sure to use lots of thermal compound. Be sure to keep at least a 1cm space between the heatsinks You should experience a 25-30 degree drop when playing for longer periods of time. It's very effective in preventing rrod.

**Adrian223** · 06-21-2010, 05:02 PM

Or if you have no disk drive, then by all means just swap the heatsinks, you may need to remove a few panels on it, or cut the heat transfer tube, but it should fit very nicely.

**eurbert** · 06-22-2010, 05:26 PM

Did you perform your tests on an open xbox? Or did you close the whole case every time?

**dudemaaan** · 08-09-2010, 10:12 AM

^ good question. Especially in regards to reversing the fans.

**Adrian223** · 08-13-2010, 03:01 PM

closed case obviously. everything was done generically

**beffman** · 11-10-2010, 11:35 AM

Hi adrian223 - thats some very good there !! - im very interested as to how your tests worked out? did you re-arrange the cooling system? fotos? cheers beffman

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