Originally Posted by resetg
So maybe I'm jumping the gun asking a few questions. But I read thru about the last 15 pages and almost the first 100. I also read the entire mod zoo review. Quite a few of my questions have already been answered but I have a few more.
First has anyone attempted to mod the upper front of the case to be able to slide a 480mm radiator the roughly extra 1/4 inch required to mount the radiator with the ports facing the front. Secondly on this topic, I will be using a UT60 radiator up top. I've been considering only using the half of the radiator (over the 5.25 bays) in push/pull and the rear of the radiator in only pull. The possible reasoning behind this is to not have to worry about clearance issues with the motherboard/fans. I also think this will possibly give a cleaner look than the fans overlapping the motherboard as well. If your curious I will be using a ASUS X79 Deluxe motherboard.
Second, I will be using a 480mm Monsta on the bottom of the case in push/pull. With this being said which orientation should I use the fans. Should I suck air from the bottom and release hot air into the case or should I do the opposite. Take air from the case and push it out the bottom? Also for the drain port I was planning on using one of the rear facing ports on the radiator to put a quick connect coupling coming out of the rear of the case. This way I wouldn't have to always have the drain port connected and taking up more space behind the case.
I took pictures and made them all fancy in paint. But 3 hours later the picture upload is telling me one moment still! I'll attempt to reload them again later so that hopefully my jibberish makes sense
Taking a step back 1st, what is the ultimate build out of your system ? I mean in the future maybe a 2nd 780 Ti or more ? Not that there's anything wrong with overkill
. but just throwing out that if that's the load, twin 480s is more way than ya need. using the data available at martinsliquidlab site and calculating ya load from published data, I come up with the following based upin a 4820k OC's to 4.8 w/ 1.4v, twin 780 Tis, WC Blocks on RAM, 2 MoBo blocks and a 35x2 double pump:
Heat produced =736 watts stock / 984 watts overclocked to the wall. I usually figure about 60% of that needs to be handled by the rads and that would be 590 watts ... With 1800 rpm fans your UT60-480 and Monsta 480 will provide about 887 watts in push pull ..... 734 in push only.... that's way more than ya need for a target Delta T of 10C.
At 1250 rpm you'd have 621 (63%) watts in push pull and 514 (53%) watts ..... now my build.... same as assumed above but 780s instead of 780 Tis and I didn't cool RAM I was at almost the exact same spot 64% in Push Pull and 53% in push only ..... due to the limited availability of the Phanteks fans, I started out with just push and figured Id add pull later. As it turned out tho .... my Delta T is only 8.4C at 1200 rpm under furmark so I figured why bother adding the other 5 fans...... NOTE if furmark loaded the CPU at 100%, I calculated it to be about 9.8C
So if ya keep the 480s....I'd top out at 1250 rpm fans ....
Other comments ......
1. Rad thickness is almost immaterial .... For example at 1800 rpm, a XT45-480 gives you 343 watts of cooling compared to the 359 offered by the UT60. At 1250 rpm it's 296 and 303 watts ..... now with ya comments about blocking the MoBo and only doing half the rads.....
At 1250 rpm.... UT60-480 gonna give you 125 watts for the sections with single fan and + 152 for those in push pull or 277
At 1250 rpm.... XT60-420 gonna give you 302 watts in push pull w/ no obstruction of MoBo.
a) Eliminate ya obstruction worry
b) Give you 9% more cooling
c) Let ya use the fans that come with the case
d) Eliminate ya fit issue about ports
I chose to drop from the UT60 to XT45 as otherwise in Push / Pull access to the EPS cable, MPCIA combo card, mem OK LED, voltage monitoring ports and error display was blocked with the UT60.
A XT45-420 on top and Monsta 480 on bottom w/ 1250 rpm Phanteks fans fans will give ya 513 watts w/a single fan and 620 with push / pull.
A XT45-420 on top and Monsta 480 on bottom w/ 1400 rpm Yate Loon (medium speed) fans will give ya 575 watts w/a single fan and 696 with push / pull.
All fans should, IMO, pull air from the outside into the case......Notes:
1. The bottom intake is notable restricted .... doesn't affect me too much with a 280 on the bottom but with 480 down there, you're gonna wanna raise the case off the desk / flow at least 1.5".
2. The top air inlet filter / grille is very restrictive...... I was seeing a 1.3C temp drop across my bottom 280 as compared to the 0.9 drop on the top 420 ..... lifting the case up and removing the filters reduced my delta T by 4C
Your drain port idea was my 2nd choice.... I went with my 1st so I didn't have to carve up case and this option was a lot cleaner.....
If ya go with the 420 on top, bleed / fill ports also become an option.
Here's the calcs I did for ya system .....
Resetg-radcalcs.XLS 10k .XLS file
Use the data with the other info here if ya wanna look at various options.
http://www.overclock.net/t/1457426/radiator-size-estimatorEdited by JackNaylorPE - 2/5/14 at 2:56pm