Ultra-120 Extreme not better than 'ancient' SI-120?

[TWY]

Just changed to a Ultra-120 Extreme from my old Thermalright SI-120 (the revised version of XP-120 that still uses a metal base and a hook-and-clip mounting system).

I'm not noticing much difference in temps between the two heatsinks for my E6600 @ slightly over 3GHz. Fan used is a Thermaltake Silentcat 120mm approx. 1600rpm for both heatsinks. :shrug:

Could it be due to the fan fault (seems quite weak when there is obstruction)? Or my casing which is known for its cramped internals - the Antec P180?

I have checked my Ultra-120 Extreme mounting and it is very firm. :yepp:

Please advise. Thanks!

[Bail_w]

have you check the Ultra 120 extreme base flatness yet? because normally, they are either concave or convex and require a lap job.

[[XC] DragonOrta]

The Ultra 120 Extreme will show much better temps when compared with a higher heatload. An E6600 at 3ghz doesn't put out much heat. If you compared the two sinks with a quadcore, then the difference would be more noticeable.

[SaFrOuT]

what prg r u using to report the temps ?

[CPLB]

Just changed to a Ultra-120 Extreme from my old Thermalright SI-120 (the revised version of XP-120 that still uses a metal base and a hook-and-clip mounting system).

I'm not noticing much difference in temps between the two heatsinks for my E6600 @ slightly over 3GHz. Fan used is a Thermaltake Silentcat 120mm approx. 1600rpm for both heatsinks. :shrug:

Could it be due to the fan fault (seems quite weak when there is obstruction)? Or my casing which is known for its cramped internals - the Antec P180?

I have checked my Ultra-120 Extreme mounting and it is very firm. :yepp:

Please advise. Thanks!

Just for reference, I went from a TR SI-128 to the Ultra Extreme and I dropped 10-12C load with my E6600 @ 3.6GHz w/1.47V I'm also using a much louder fan though (San Ace)

[TWY]

what prg r u using to report the temps ?

I'm using CoreTemp in Windows XP. :(

[TWY]

I'm quite surprised with my results.

I've found a review site (link (http://www.pcper.com/article.php?aid=431&type=expert&pid=4)) which has some figures for the older Ultra-120 and the older brother of the SI-120, the XP-120. The Ultra-120 is performs much better than the XP-120 using about the same fan speed, so it should be the same case with the Ultra Extreme and the SI-120. :shakes:

[SaFrOuT]

is ur cpu's ihs lapped ? maybe the ultra has a covex base than needs to be lapped

[ChaosMinionX]

Sounds like your Ultra120X doesnt have a flat base for contact with the IHS, try lapping it down to the copper, and flat.