Discussion in 'Overclocking & Cooling' started by xyz123, Mar 8, 2012.
new methods !
What exactly did you do here?
awesome thermal pics! how did adding that fan ontop of the GPU workout?
Moar pix moar
Actually this pictures claims, the graphic card building style is not correct. All the components are on the wrong side of the pcb (looking down). Those should be up on the pcb, because only with this type of config u get better cooling.
Otherwise u trying to break the "natural rule." That rule is heated air always go up and high. That why case makers changed the psu position from up to bottom in the first place.
Today cooling solution looks like this
Future cooling solution needs look like that: "coolers up" like "top on the shelf"
that wouldnt work... your trying to push hot air down?
The fan blowing direction needs also changes. Sorry forgot to mention it. The blowing direction should be up, not down (towards the components on the pcb). The hot air should be kicked out of the case immediately.
I have a reference 6870 which actually blows air directly out the back of the case through a vent in the rear panel for the video card. Perhaps using an extra slot and a PCI-slot cooler might help or a custom home-brew solution.
I love thermal pictures, it really does help figure out what is running hot and where. Nice find.
Although I agree that hot air rises, power supplys were moved into this bottom position so that they dont take in warm air from the rest of the components.
also the case is not so top heavy with the PSU at the bottem...
does heat really rise that fast? i mean would it even make a difference? cards are designed atm so air flows across them and out the rear of the case... the other side of the GPU will always be hot as heat will travel thru the PCB
Ok. When fans blow to gpu, the heat from the heat-sinker or from cooler goes directly on pcb, which blocks the air circulation (see picture1). And pcb goes hotter as the first pictures on the top of the thread. That's why putting a fan to the opposite helps to take away the heat.
As you see the pcb becomes heated. Not need to mention how heat affects oc. Here is a more sample pictures of pcb heat. Check Nvidia 480 under load. Cant be more worse...
For this reason graphic card manufacturers must change looking design of the cards. The gpu heat-sinkers or coolers should look up. I horizontally flipped the above picture to give an idea how must the new design look.
Ps: Also this type of solution it will not work well with "blowing" type cooling system. Like 7970 reference design.
That is a good idea! I have never though of it. The only issue is that some GPU manufactures use a different thread of X clap screw so it would not work on all GPU's I may give this a test on my 560TI
The 7970 reference design blows out of the case through the rear, it's not an intake. It's just like the 6000-series reference coolers. Also blowing hot air into the case from the GPU is a horrible idea because with good enough air flow the ambient temperature inside the case should be reasonable and shouldn't cause cooling issue. If it is, you need more airflow inside your chassis.
open Pc case !
Hello dust. Also just because it is open doesn't mean the air around it is moving a whole lot.
Yeah most video cards are positioned like in PIC one because the coolers on them breath in cool air from the bottom and exhaust out the back.
In your case your card has a passive heatsink. Most high end cards don't have a passive heat sink and are fine the way they are.
Run your pc upside down, perform the same tests then post back your results?
Look at cases like the Silverstone Raven series and some of the ones from Bitfenix and others where the graphics are moutned near the top of the case or perpendicular to the top of the case. Flipping graphic cards around is nothing new.
sucking air away from the PCB wont work.... you need to blow air onto it...44
zargana, thats 2nd pic with the air coming from outside into the GPU and then into the case will just make things worse... not only will it not cool the card very well it is also putting more heat into the case...
also if your going to have an open case you need a large fan blowing over the whole thing to move the surrounding are away and bring in new fresh cool air...
Honestly, I like my Antec 1200 case. There are 3x120mm fans on the front of the case that act as intake fans, additionally there are 2x120mm on back and a 200mm on top acting as exhaust. There is also room for an optional side panel fan.
Antec Twelve Hundred V3 Black Steel ATX Full Tower...
I actually just got my replacement Zalman LGA2011 bolts and torque driver from Zalman and re-orienting the cooler to face back instead of up and using a little less thermal compound dropped temperatures by 10*C. Keep in mind that there are more factors than just airflow that determines your temperatures.
Unless you have two openings, one for intake and one of exhaust, a single fan isn't going to do you any good at all. Once you have two openings, it doesn't really matter if you're blowing cold air in or hot air out, it will still move the same amount of air in and out of your case. It's a matter of having balance and proper locations of openings and fans.
this is not correct.... you will always cool something faster with air blowing against it rather then trying to suck it away...
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