Venomous-X vs. Megashadow Updated

My i7 is rather power hungry and as we all know, more power means more heat, so I went ahead and bought the new Venomous-X to see if it really is better. The results are as follows:

Testing conditions:
Ambient temp: 21°C
Fan: Single Scythe Slipstream 1900rpm 110CFM in "Push" configuration
TIM: Arctic Silver 5
TIM application method: 1 line down the middle
Each test was conducted after a fresh seating of the heatsink

CPU settings:
Intel Core i7 920 D0 Batch 3919B012 @ 4.0ghz
BLCK: 191x21
CPU Vcore: 1.375v
CPU VTT: +200mV
CPU PLL: 1.875v
QPI PLL: 1.375v
DIMM: 1.65v
IOH Vcore: 1.20v
ICH Vcore: 1.175v
Hyper threading: On

Megashadow Round 1

Megashadow Round 2


Venomous-X Round 1


Venomous-X Round 2


Graphs
Explanation:
Low: Lowest idle temperature.
High: Highest peak temperature.
20mins: Highest core temperature after 20mins of Prime95 blend test.


Test 1 comparisons.


Test 2


Graph of individual core temperatures by test #


Conclusion:
The Venomous-X was on average 5°C cooler than the Megashadow under the same conditions.

Side note: Yes I realize the Venmous-X had the same temperatures for both tests. I assure you that I cleaned off all the TIM, reapplied it, and re-sat the heatsink between each test.

Special thanks to Shadowclock for helping me organize the test.

Addressing the question of 38mm fan clips, the ones it comes with grab onto the inner side only allowing them to work with 38mm and 25mm thick fans.


Update

Now that the AS5 has been in place for a week and I have a Panaflo M1 120x38mm fan to play with, I did a 120x25mm vs. 120x38mm comparison to show how low temps get.

Fan specs:
Panaflo 120x38mm M1 86.5CFM @ 35dba
Scythe Slip Stream 1900rmp 110CFM @ 37dba
CPU settings: Scroll up
Ambient temp: 21°C

Links to the screenshots
120x25mm test 1
120x25mm test 2
120x38mm test 1
120x38mm test 2

Graphs

I grouped both trials together this time


Individual core temps


Purpose of the testing was to show how cool the Venomous-X can get with a 120x38mm and reinforce the fact that static pressure is > CFM.

Even with the slimmer profile of the Venomous-X I was barely able to fit one.



Edited by groundzero9 - 3/23/10 at 6:21pm

I have a new fan on the way (had to RMA my last "upgrade") and also plan on posting new temperatures once the TIM goes through it's burn-in time.

I wasn't sure how much to tighten it so I did one full turn of the bolt once it actually started to add pressure. It feels a lot more snug than the Megashadow did fully tightened.