Regret buying which cooler?

Yup,the performance totally great in some specs.
I think 690 will perfectly match the gemini II.

I think its due to the opened side panel that makes your temperature 24-25C.
It means more cool air from outside will get into the case.

That also happen to me when i use gemini II with no casing.My temperature is around 31c idle.
But after using a casing,my temperature jump to 42C idle.

Ok, I re-organized the fans a bit and had those low cfm, low performance Cooler Master fans on top and rear exhaust. It isn't so noisy anymore and temps are a bit better but still worse than my cheap case with side panel open.

I thought CM 690 should give better temp since it has good airflow?

Yup,i heard in a review said that CM690 have a good ventilations.
But,IMO,you can also try to lap your gemini II and it might decrease 2-3C more.

I know lapping would probably help but what I'm saying is this 690 gives a worse temp compared to cheap casing with panel open.

Sorry,i think it should be cuz of the material.It absorb heat.
Well,i never used 690 b4.
But im sharing based on the experienced.

are u comparing the temps in the 690 with an open or closed side panel?

if ur comparing closed vs open.... then of course open is better.

Yup,thats rite bro.Opened is better compare to closed.
But in this case,he's trying to get different between opened CM690 and Opened Chapalang case.

As what i know,he said opened CM690 case runs hotter than opened chapalang case.
It may be because of the different type of ventilation,material of the ambient temperature inside the case.

From what I read in other forums, a good casing with closed panel is better than open casing on a cheap panel. It's alright and I guess I'll just leave it as it is

For better air flow thru the case, place a higher pressure/cfm fan towards the rear of the case. it should be higher than the intake to create a windtunnel effect.
it also depends on the HSF used, Gemin for example needs a lot of intake air to get it to perform. IMO, an open case(cheapo or exp) has always better load temps compared to a well ventilated case. However, u'll get low downs in an open case, like higher VGA temps, poor ventilation ( obviously) and dust

Open chassis has better ventilation. That's all. I have no idea why you got GeminiII when you could get something better, but heck, "nasi sudah jadi bubur". So, unless you want to leave your CM chasis open, then be ready for a higher temperature.

The thing about GeminiII is that it's airflow is not direct. It blows unto the motherboard. The air is not directed out of the chassis. Conceptually, it cools other components on your motherboard, but Anandtech has proven that the difference is neglible. It does not do its primary job well especially with the configuration of chassis, and its secondary job is just a marketting gimmick.

Well.. it's cheap and seems to work well enough for a lot of people. I use an open stand so there's only really one fan other than the one on the display card. A GeminII would be totally inefficient here, but in a case with good airflow it shouldn't be too bad. At any rate, the point isn't to blow air at the heatsink, it's to draw warm air out. For the GeminII the fans mainly cool the heat pipes.

This post has been edited by wodenus: Dec 15 2007, 08:41 PM

Really? Seems like the installation and the illustration on their website beg to differ.
[attachmentid=360481]
If it draws the air out, that may serve its primary function well. But then, if only you have an open chassis. If you have a closed one, it is useless.

http://forum.lowyat.net/index.php?showtopic=589248&hl= <---- check it out performance is good ^^

http://www.coolermaster.com/products/produ...=detail&id=3263 <---- is this their new product? SMALL GEMIN LOOL

This post has been edited by LyraSummersile: Dec 15 2007, 09:04 PM

yea well mine is open.. if you put two high cfm exhaust fans up there... the area in between the fans and the board will get noticeably colder problem with it though is that you will need two high cfm low vibration fans.

This post has been edited by wodenus: Dec 15 2007, 09:27 PM

Well, that's the point. Open chassis...not many people would like that.

Not anymore,im not using gemini II anymore as the size is enormous.
Now just use lapped xigmatek S963,in terms of performance,its better 11C.

I tried that and having a high cfm fan on the rear makes it worse. The fan of GeminII is so close to the rear exhaust and a high cfm rear fan would be busy sucking air out and produces a very loud noise. Changing to a normal cfm Cooler Master temp gave better results.

---

Added on December 16, 2007, 12:29 amI don't think GeminII is the issue. The comparison now is:

Cheap Asus case w/ side panel open
VS
Cooler Master 690 w/ side panel closed

So it means if I get 24C idle with the cheap casing, I should get around that with the 690.

I tried swapping the fans and having low cfm fans on top and rear helps in giving better temps. I guess this is because high cfm fans creates turbulence near the area when both GeminII fans are busy blowing into the HSF. Plus, it creates a very loud disturbing noise.

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Added on December 16, 2007, 12:34 amAre you saying the Xigmatek gives 11C improvement?
Well, this is really interesting as I never had 11C improvements changing from one to another 3rd party cooler Your load temps must be in the 30's without air cond then.
Maybe Xigmatek is really that superb or you had a bad mount on your GeminII earlier.

This post has been edited by clawhammer: Dec 16 2007, 12:34 AM

Why don't you try turnng off all 3 fans (1 back exhaust and 2 top exhaust) and see if it makes any difference?

Good suggestion indeed I think I should but for now, I'll just leave it for a bit. I have been removing everything so many times within the week, sigh. I got the Gigabyte Superb 730W and then changed to the Gigabyte Odin 550W and not to mention those fan rearrangement.

I'm getting 25C-27C idle and 51C-53C load which makes it very near to my cheap casing w/ panel opened. Solution is I had all high cfm fans at the bottom (blowing in) and rear/top exhaust fans are equipped with stock Cooler Master al-cheapo which comes with the 690.

side ventilation tunnels are only good for coolers which are extrusion based or flower like.. not for heatpipe systems or gemini 2.. gemini 2 needs either an open casing or a very big casing