inside the 4870 cooler, pics

The stock 4870 heatsink is even better than some of those aftermarket coolers in some ways - it exhausts the hot air out the back of the case instead of just recycling it. If you're planning on overclocking, clean the base and apply AS5 or similar instead, then turn up the fan speed slightly. It's virtually free and will no doubt match the performance of some of the more expensive third party coolers.
 
yeah id reuse these if i had to replace my thermalrights for some odd reason
 
Its not a bad cooler - its just that ATI seems to have this need to set fan speeds at < 20% all the time.

I wonder if someone used the stock heatsink and strapped a quitier larger fan on there and did some tests... triple slot yeah but no need for a new heatsink
 
asdfsn5.jpg


stock cooler with fan @ 30% can bearly hear it.
 
yeah ive been contemplating about selling my hr03-gt and just use the stock ones.no heat inside the case that way and alot more room
 
i like it , better than the single gtx 280 anyways :)
 
I have a feeling the default fan is highly inefficient. It has to be turned up to relatively loud volumes in order to move sufficient air over the heatsink to cool the card. To me 30% fan is the limit of comfort as far as noise is concerned. I can deal with higher, but not for extended periods.
 
wow that's a big cooler. it's not cooling the memory? low airflow will heat up the memory modules for sure. hope that they "fix" the fan speed issue soon.
 
what is everyone's problem with GPU fan speed. I always run mine at 100%. Sure I can hear it, but I have that along with my CPU fan, PSU fan, 7 case fans, and a 200mm blowhole (antec 1200)

if it's too loud 1)headphones 2)turn up your volume
 
myndcrime said:
what is everyone's problem with GPU fan speed. I always run mine at 100%. Sure I can hear it, but I have that along with my CPU fan, PSU fan, 7 case fans, and a 200mm blowhole (antec 1200)

if it's too loud 1)headphones 2)turn up your volume
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3)get Tinnitus
 
myndcrime said:
what is everyone's problem with GPU fan speed. I always run mine at 100%. Sure I can hear it, but I have that along with my CPU fan, PSU fan, 7 case fans, and a 200mm blowhole (antec 1200)

if it's too loud 1)headphones 2)turn up your volume
Click to expand...

You pay heaps of money to get speakers/headphones that give a clear sound all to destroy it by having a computer that emits a constant loud droning sound. :p
 
Yah, stock heat sinks on the 4870 do well at 35%. For us 4850 owners though, I'd go with the accelero with a quiet 120mm fan on top. I'm seeing some great temps...idleing at 35C..and 45C load on a 700/1100 OC...using Zalman ram sinks on the regs. :)
 
myndcrime said:
what is everyone's problem with GPU fan speed. I always run mine at 100%. Sure I can hear it, but I have that along with my CPU fan, PSU fan, 7 case fans, and a 200mm blowhole (antec 1200)

if it's too loud 1)headphones 2)turn up your volume
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Actually, I don't mind the noise when I'm playing games. I too have the volume turned up or use headphones. I do want the card to shut up in 2D mode however. This should be done automatically, because if you have to go in and change the fan speed manually (or use a fanmate), you're bound to sooner or later forget to turn up the fan before starting a game, possibly frying the videocard in the process.
 
Hrm mixed feelings here.

It keeps the card at high temps like 80 degrees idle and 85-90 degrees full load, people have speculated this is intended, which is a bit irritating because I have a soundcard jammed between 2 of these things and it recieves a lot of heat.

The stock cooler looks like it should cool well, turning it up to about 33% fanspeed seems to more or less deal with stock clocks which is 750/900 for me. However there is little to no room for further overclocking, I get artifacts with clocks much higher.

I wish the dynamic fan speed control worked a little better, the idea situation for me would be to set a target temp of say 60 degrees and have the card adjust the fanspeed to reach that, then when its idle it wont need to be loud as hell.

Im going to try removing my HSF from my Sapphire cards and replace the thermal paste with some Antec S5 stuff which seems to do a good job on my CPU, I have that running at ~30 idle with a Q9450 @ 3.6Ghz which is quite cool for such a huge overclock, thats with a zalman 9700.
 
BigCactus said:
Yah, stock heat sinks on the 4870 do well at 35%. For us 4850 owners though, I'd go with the accelero with a quiet 120mm fan on top. I'm seeing some great temps...idleing at 35C..and 45C load on a 700/1100 OC...using Zalman ram sinks on the regs. :)
Click to expand...

What would you recommend setting the default fans to??
 
Actually, after looking at those pictures again, I notice the two heat pipes aren't really using the massive fins. Look where the heat has to go, up through the heat pipes then disperse into the fins then get blown away by the fans. If you look at the pictures, you could probably remove 50% of the fins and not affect performance.

Compared to the accelero s1 where the heat pipes distribute heat across the entire length of the fins, not just one side of them like the stock cooler. That means the entire length of the S1's fins are used to disperse heat, not just one small area of them.
 
Frostex said:
Hrm mixed feelings here.

It keeps the card at high temps like 80 degrees idle and 85-90 degrees full load, people have speculated this is intended, which is a bit irritating because I have a soundcard jammed between 2 of these things and it recieves a lot of heat.
.
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I see everyone continues to equate high chip core temps with putting out a lot of heat. Power consumed by the card equates precisely to how much heat it "puts out". Cooler efficiency and fan speed then determine how much heat is carried away and what the core operating temp is. With a cooler like that, the high operating temps are because of the designed fan profile.

Furthermore, the cooler exhausts outside of the case. The heat is being "put" outside of the case not into your sound card.

You should worry more about your sound card blocking or heating the intake air going into your shiny new dual GPUs, IMO.
 
they should have an air intake at the back of the card, not just the top of the fan, like the gtx 280 cards have , so it can breath from both spots, either way without messing around with the profiles they run to hot, and to get them to acceptable temps there too loud

@ 30% its quiet, once you go 35% you get an annoying whine, i can hear it over fivex120mm fans and a 200mm fan in my case

@ 790 core, 1075 memory the idle around 56-58C, and load up in games around 85-88C
still not bad, but not great at all
 
What if you took off the stock off that plastic and ziptied a 120mm fan to the actual heatsink? I bet it would work well since you have no plastic obstructing airflow, and will be however quiet you want it to be.
 
Thanks for sharing. How does this card compare in sound to others in its class/manufacturers?
 
the card at stock speed is quiet but its too quiet, because its not moving enough air

at 30% its acceptable airflow/temps but you have to modify the profile to make it work

anything over 35% is too noisy for me
 
I think the HSF cools really well if you bump the fan speed up to 25-30%. The problem is that the fan is noisy (to me) at anything above that. They need a quieter fan and have it's default speed set at 30% (assuming it pushes the same amount of air) and all would be good.
 
CanadaOwnsJoo said:
they should have an air intake at the back of the card, not just the top of the fan, like the gtx 280 cards have , so it can breath from both spots,
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Tangential blowers don't work that way. The ONLY air intake is into the center of the blower, and anywhere outside of the circumference of the blower is an exhaust. Tangential blowers create far more airflow for a given amount of noise than a standard bladed fan. That's why they're using in home and automotive HVAC and many other applications.

I've briefly looked at a number pics of a GTX280 and if there are grilles in the very rear of the card, they will be exhausting a small amount of hot air, not drawing in "cool" air.
 
JimmiG said:
The stock 4870 heatsink is even better than some of those aftermarket coolers in some ways - it exhausts the hot air out the back of the case instead of just recycling it. If you're planning on overclocking, clean the base and apply AS5 or similar instead, then turn up the fan speed slightly. It's virtually free and will no doubt match the performance of some of the more expensive third party coolers.
Click to expand...


I totally agree the cooler on the 4870 is most impressive, mine is an ati branded vision tek radeon 4870, there's no chick stickers on it so I can see everything through the red plastic and I am very impressed, ofcourse you MUST modify the fan speed, at default I think it was set to 12 or 20 percent WAY TOO LOW the card idled at 76C and thats in a coolermaster stacker 830 case with three side fans blowing on the card. By doing the XML file change and bumping the fan speed up to 45 percent I am now getting idle temps of 44to 47C. This is without using arctic silver ceramique ( I didnt wanna mess with the paste since I dont have any thermal tape handy for the memory). Anyhow I couldnt be more happy with the temps now and the noise is no different than my 8800 gts card.
 
going from 30-34 seems to be a huge increase in noise , cant stand it lol, not for the small drops in temps it gives
 
Eagle156 said:
What if you took off the stock off that plastic and ziptied a 120mm fan to the actual heatsink? I bet it would work well since you have no plastic obstructing airflow, and will be however quiet you want it to be.
Click to expand...


at 45 percent fan the fan is not noticeable above any other fans in my case, I have a coolermaster stacker 830 case, needless to say such a well ventilated case is a bit noisier than some of you obsessive compulsives can handle but I can honestly say it is no louder than my 8800gts card was at 90 percent fan yet cools considerably better, the flaw in the nvidia cooling systems is that they have open grilles on the front or just before exiting out the back like mine, hence the hot air of the 8800 series cards and the new ones too.......doesnt make it out the case. The ATI solution is more efficient. Im certain that arctic cooling is behind the cooling system of both the high end ati and nvidia cards, you really do not need to replace these coolers just increase their fan speeds. Thermalright has great heat sinks but their graphics card coolers leave something to be desired, too big and that hot air is just blowing around in the case. THe same applies to the thermal take duo orb solution or zalman solutions, you wont get better temps that I have seen thus far with the 4870 than you will with increasing the fan speed of the factory cooling system.
 
well my hr03-gt coolers keep mine at 42 idle, 52 load, and make 0 noise (noctua fans)

i didnt like how my one was exhausting into the power supply though, but i have 5x120mm fans @ 5v , 2x120mm fans @ 12v (noctua) , 200mm exhaust and its near silent the nasty whine you get from these coolers at 34% is a huge jump from what they are at 30%

http://img295.imageshack.us/img295/484/alldonerm1.jpg


i might put these back on yet, not sure
 
CanadaOwnsJoo said:
going from 30-34 seems to be a huge increase in noise , cant stand it lol, not for the small drops in temps it gives
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you must have hearing like superman and a poorly ventilated case

you guys crack me up sometimes with this noise obsession, people tweaking about a little fan noise lol, get some good fans folks and youll see a difference like panaflos or scythe s flex fans

one certainly cannot hear the video card fan over your fragging in some game
 
CanadaOwnsJoo said:
well my hr03-gt coolers keep mine at 42 idle, 52 load, and make 0 noise (noctua fans)

i didnt like how my one was exhausting into the power supply though, but i have 5x120mm fans @ 5v , 2x120mm fans @ 12v (noctua) , 200mm exhaust and its near silent the nasty whine you get from these coolers at 34% is a huge jump from what they are at 30%

http://img295.imageshack.us/img295/484/alldonerm1.jpg


i might put these back on yet, not sure
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avoid fans that are sleeve bearing, scythe s flex and panasonic panaflo fans are great scyhte uses a fluid dynamic bearings and panaflos use hydrowave bearings, very long lasting fans that do not resonate at high frequencies that annoy people such as those fans that are sleeve bearing for example.
 
Surly73 said:
I see everyone continues to equate high chip core temps with putting out a lot of heat. Power consumed by the card equates precisely to how much heat it "puts out". Cooler efficiency and fan speed then determine how much heat is carried away and what the core operating temp is. With a cooler like that, the high operating temps are because of the designed fan profile.

Furthermore, the cooler exhausts outside of the case. The heat is being "put" outside of the case not into your sound card.

You should worry more about your sound card blocking or heating the intake air going into your shiny new dual GPUs, IMO.
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You're talking bollocks.

You're right in that the total heat generated by the card does not change, but when you slow the fanspeed down less heat is exauhsted out the back of the case, this initially causes the heatsink to rise in temperature, once the heatsink reaches a stable temperature it means the card is giving off the additional heat to its imediate surroundings which is the air around it (inside the case)

The soundcard is jammed right between both 4780s and so recieves a lot of heat from them when the temperature of the cards is high, and recieves less heat from them when the fanspeed is high because more heat is being exauhsted out side the case and the cards are overall lower in temperature.

The soundcard generates no real significant amount of heat on it's own, yet when in a very cool case, it actually gets too hot to touch the metal case, my guess is about 80 degrees when the 4870's are under full load with the default fanspeed (slow) at this point the 4870's are closer to 90 degrees.

When the fanspeed is set higher and the 4870s run cooler more heat is being put outside the case and less is leaking from the cards to the air inside the case, which means the soundcard is cooler, cool enough to touch.

What I was saying in my previous post was that im quite happy for the 4870's to run that hot since they were designed to, but applying huge amounts of heat to other devices inside the case in unacceptable, more specifically heating my soundcard case to be too hot to touch is not good, I expect it puts it well outside its normal operating temps (i'm trying to find them online now actually)

Pics for reference, if you think the temperature of the 4870 graphics cards doesn't effect the temperature of the soundcard then you're nuts.

2641309865_56f54fd758.jpg


snefan said:
cus it throttles while idling. :rolleyes:
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The overclock is entirely FBS related, yet the throttle is done by lowering the multiplier, so the throttled speed when overclocked is still greater than the throttled speed when not overclocked, i.e. it still runs hotter than it should do.

Wait let me throw in a few of these as well :rolleyes::rolleyes::rolleyes:

There we go :D
 
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