20'c is alot.... mine just 11'c difference at OCed 3.0ghz......

it depends actually... at load 70'c is very hot for stocks... might not have good enuf airflow inside it... .. so when change to xigmatek.. the airflow bcom better due to higher cfm and the air flow from 1side to another... not like intel stock fan blow facing onto the board

vcore graph uploaded.... temperature graph edited due to minor mistake..

The fan on mine (Red Scorpion) spins at 1500rpm +/- 5%. verified in BIOS and ITE Smartguardian software.

1.5k is max already.... u can calibrate ur fan speed with ur mobo software for example mine gigabyte is using easytune5

I think xigmatek also can be lapped, i saw one forumer done it before when he wanna sell off his S1283, but forget who liao... anyhow, who's up here wanna try lapping the heatsink??

Need help on the red scorpion,
I installed it on my rig and am still getting very high temps ...details as below.
Rig details....
Processor E6750 @ 2.66Ghz at 1.35 Vcore
Mobo Gigabyte P35 DS3 (Bios F12) at stock voltages
Ram 2GB Patriot DDR2-800 (4-4-4-12 at 2.2V)
PSU Gigabyte Odin Pro 550W

I installed the Red Scorpion and have run the E6750 at 100% utilization both cores for
30 minutes a couple of times & the results are the same the CPU core temps is at 69 deg C
(temps using Everest Ultimate Edition).
The core temps during normal use (i.e. surfing, watching movies, etc) is between 45 to 50 deg C.

The red scorpion was installed using the spring & screw kit, the protective sticker was removed
and the enclosed thermal paste was used (thermal paste was applied on all 3 heat pipes).
All traces of old thermal paste was removed from the processor.

Based on the temps which are higher than I had using the stock intel cooler.......I definately have done
something wrong on the installation.

One thing I have noticed is that on my rig I have installed the fan perpendicular to the rams as opposed
to the pics posted by vincentlaw of his rig on the first page. Will this make a huge difference..??

Any ideas or suggestions are appreciated.

Thanks,
Culain

Sure ah?.. i saw one post saying my sidepanel's case fan will block it... damit... 

Anyone else can confirm tis?..

Cheers 

Oh.. so what did u do?.. took off the sidepanel's case fan?.. and just use yer xigmatek hsf?..

I was thinking does it effect much if i took off my sidepanel's case fan and juz use RS-s1283.. or better getting Xigmatek hdt-SD964 instead.

Cheers