Replacing fenrir fans with...??

DrMekon

DrMekon

DrMekon

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Looking for some quieter fans for the fenrir.. havent actually got it yet, but looking to order i7 4ghz bundle today, and noticed that the supplied fan seems quite noisy...

Was looking at 2 of these, although wondering why they seem so cheap:

Scythe Kaze Jyuni 1900RPM Slip Stream 120mm Fan
http://www.overclockers.co.uk/showproduct.php?prodid=FG-022-SY&groupid=701&catid=57&subcat=4

- Air volume at full speed (12V), CFM ±10% 110.3
- Noise level at full speed (12V), dB(A) 37.0
- Fan speed at full speed (12V), RPM ±10% 1900
- MTBF 3.5 years

Ive also seen posts about having 2 fans on the heatsink in a push/pull config, does this really make such a big difference...???
 
Rated dB readings don't really mean anything, as the distance and means of measurement is rarely specified. You'll do better with reviews/user opinion than stated ratings I fear.

Similarly volume/time measurements don't mean very much as they rarely state static pressure. Really high airflow measured at zero back pressure doesn't help when you're forcing air through a heatsink.

I believe the favourite is one of the noctua fans, though I'm unsure which model. I'm using scythe s-flex 1600rpm and they seem to perform well without much noise on a TRUE and on radiators.

As for push-pull, it will probably help. The difference between one fan and two on my TRUE was 2 degrees, this depends heavily on the airflow in the rest of your case. Kind of a case of try it and see, if it doesn't help much then put the second fan on the case somewhere.

My 2 cents, I'm sure someone will soon tell you which noctua is the recommended standard
 
+1 for the Noctua fans - for a heatsink you should look at the NF-P12 fan as it has a high static pressure which is needed to correctly force the air through the small gap between the elements of the heatsink fins. As for push/pull it does only make a small difference, as JonJ said poss a couple of degrees - if you are planning to clock as high as poss then it is worth having, although the Fenrir only has wire clips for one fan, so a second would need to be held on with cable ties or similar.

The Noctua fans are expensive so what about asking OcUK if they can swap the cooler for the Noctua NH-U12P 1366 edition as that comes with 2 of the P fans - not sure if they will though as they may not have tested the bundle and it's OC with that fan so couldn't guarantee the OC. Can't hurt to try though!
 
The Noctua fans are expensive so what about asking OcUK if they can swap the cooler for the Noctua NH-U12P 1366 edition as that comes with 2 of the P fans - not sure if they will though as they may not have tested the bundle and it's OC with that fan so couldn't guarantee the OC. Can't hurt to try though!
Click to expand...

Already tried that with the TRUE, buy as you state, that was their comment..!!

Although surely a "better" spec cooler surely only provides more efficient and better cooling, and a more stable clock...

I do happen to have couple of noctuas lying about unused, cant remember which ones, but they were relatively expensive, will check to see what they are...
 
TBH I looked at getting the bundle too, but in the end decided to get the individual bits as I could spec a retail version of the 920 D0, a Gigabyte UD5 mobo, 6Gb of OCZ Blade 2000MHz RAM and a Titan fenrir for the same money as the bundle - so slightly better components. I haven't used the Fenrir as I already had a Noctua, and I had to do the OC myself, but that's part of the fun, and it was very easy to do.

i7 920 D0 Retail £225.99

Gigabyte UD5 £211.99

OCZ Blade 2000MHz £103.99

Noctua NH-U12 1366 cooler £57.99

Total (need to add shipping) = £599.96


So for an extra £15 you get the retail version of the CPU (better warranty), better RAM and the Noctua heatsink with two fans. You do have to OC yourself but with the number of people here who've already done that it's not too hard!
 
I was going to do that.. but ocers said that a 4ghz clock was not always possible.. and was cpu dpenendant, not just on the D0 stepping..

From what research I have done, it does seem that most or all are hitting 4ghz.. I just wanted to ensure if I was spending so much, to get a guaranteed clock and stability.. I know the bundle costs about £40 more than the bits...

Incidently, can I ask whay your temps are like under load... In the mid 70c's seems quite normal, and acceptable..??

BTW.. nice rig you got.. small fortune!!!!
 
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I would stay away from slipstreams on heatsinks and radiators as they lose a lot of their rated CFM (which is closer to 80 than 110), they also lack the static pressure to do well on restrictive heatsinks. I would personally go for a Scythe S-Flex 1500 (which i have on my TRUE and can reach 4.2ghz on my e5200) or a Noctua NF-P12 Vortex which despite the price is excellent for cooling at a low noise level.
 
Yeah that bundle is now very good value indeed, I'd be seriously tempted by it now, and maybe get a single Noctua fan to replace the one on the Fenrir? TBH I'd get a Noctua NH-U12P 1366 as well and then sell the Fenrir on as it comes unopened apparently. I guess the issue there though is that the OC can't be guaranteed if you change the setup as we've already discovered. So are you willing to take a punt on it?

To answer your Q earlier my load temps under Prime testing are about 78/80 max, with idle 38/40ish, so not too bad. But then I have turbo mode constantly on which my board allows. From what I've read I think the bundle will come with the "Performance Enhance" set to normal mode which means the turbo won't be on all the time, so it'll run 3.8Ghz as std and then when the turbo kicks in as needed it'll ramp up to 4Ghz
 
don't bother with kaze jyuni fans for heatsinks. They shift a lot of air when uninhibited, great case fans, but don't have much pressure to push air through tight spaces in modern High end heatsinks.

The best fans for pressure are Scythe ultra kaze but they can be noisy, and the Scythe Gentle Typhoon is just a fantastic fans reasonably quiet for a heatsink and owns the Noctua fans for pressure.

Unfortunately the reason the Titan Fenrir is a good out the box solution is it has a very noisy fan that pushes loads of air.
 
I may be wrong, but I seem to remember a review mentioning that you can't fit a second fan to the titan, and looking at the pics of it there dont seem to be any niches to fit the fan clips to on the opposite side.
 
HaMMuS said:
I may be wrong, but I seem to remember a review mentioning that you can't fit a second fan to the titan, and looking at the pics of it there dont seem to be any niches to fit the fan clips to on the opposite side.
Click to expand...

No, you're right you can't - at least not with the wire clips as the design doesn't allow for it. So should anyone want to do this it would need cable ties or similar blue peter mounting. I have also read that the curve of the heatsink itself could well reduce the airflow going through it as the fan doesn't sit flush with the face of the heatsink, hence the reommendation was to make some duct to cover the top and bottom to force all the airflow through. It's a shame really as the direct heatpipe contact method seems to be pretty good and the size of those heatpipes themselves suggests they should be pretty effective at shifting heat away - if only they'd made it to run push/pull if needed!
 
The standard fan isnt too bad well un til it hits 2200 Rpm then its a little noisy

120mm spinning @2200 Rpm will always be fairly noisy its WINDY.
Apart from that I find mine ok. not changed it just added a spare noctua to the back of it.

Matt
 
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