1) Does the reservoir position in my case is good ?
That is the perfect position for that type of pump and reservoir.
2) What do you think of my airflow in this case ? (I will use Noctua/Noiseblocker/Typhoon high static pressure fans)
Air looses it's ability to carry away heat very quickly. By having the upper radiator use air from inside the case it will not cool the radiator nearly as well as air from outside the case. I would have the fans push air in. I know that this may seem like the opposite of what you would usually have top mounted fans do but I assure you the temps will be better this way.
3) Does these two rads will be enough to have good temps ?
Yes they will be plenty for those devices
4) What could be or should be improve concerning the loop itself ?
Not saying you should do this but I would recommend that you think about a reservoir that is directly attached to the pump. It will mean that you use less fittings, less tubing, and VS a factory pump top it will usually give you better pump performance. VS an aftermarket pump top and a separate reservoir it will cost less.
(order of components in the loop for example)
The order of the components does not matter. Just as long as you follow any rules about the direction of flow for the blocks, reservoir and pump. What order the radiators, pumps, blocks etc are in the loop does not matter. Do whatever uses the least amount of tubing.
I would highly recommend that everything you purchase be capable of PWM... Especially the pump but the fans as well. Some of the higher speed Gentle Typhoon fans have PWM ability but are not wired for it so you can convert them to PWM. What type of speed are you looking for with the fans. Contrary to what tons of people will try to tell you fans don't usually significantly outperform another model in cooling ability to noise ratio or to power. All noise measurement can be taken worth a grain of salt because of the equipment used to measure and because most people don't understand how to read dB results (it isn't linear) so it makes it difficult to compare. Lastly testing methodology usually has compares fans at max output or at a fixed rpm. RPM does not equal CFM and different fans have different blade profiles... usually the fan producing more CFM will be louder so using the same RPM to compare 2 fans is bogus as well.
Anyways do you want a fan that makes very little noise or a fan that forces a ton of air? If you want one that makes very little noise at a low price there are several that I can recommend. One of my favorites because it isn't too noisy at max speed is the coolermaster blademaster... it is also extremely cheap. I use coolermaster xcaliburs and at the same RPM they are significantly louder but they do cool better... I am not happy with them though and they are overpriced. I also use Dell Server/Delta PWM fans they are 38mm thick extremely heavy and some are capable of intense amounts of airflow. The ones I use run up to 4000RPM but because they are PWM you can get them to be near silent. They go for $8-15 used/new on ebay but do not have normal connectors... you can buy an adapter or re-wire them.
PWM will mean more control and no need for an expensive fan controller that has less control anyways. You can run 5 or more fans per PWM channel on your motherboard. There is also an adapter available for the PWM controller on your video card so that if you want to you can control 5 or more devices from that channel as well.
Most importantly though is getting a PWM pump. I recommend either the Swiftech MCP655 PWM or the MCP-35x. The 35x is plenty large for that loop but if you feel you must have a 655 then get what you want... They cost about the same.
An example of using as little tubing as possible and how much space you can save with a pump/res combo
Also by not mounting the pump to case I was able to keep any vibrations that the pump makes from making noise by rattling the case. I can run the pump at 100% without hearing it. I could have used even less tubing if I went without that tiny radiator but I had it so why not.Edited by givmedew - 7/2/13 at 9:11am