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Why are the 5770 now using 5750 fan style?

crappy fan. Ever look at the reviews of the squirrel cage type coolers on the 'old' 5770 design? Too many failures, so they probably switched to this instead.

The 5770 is a relatively cool chip, so it's probably allright.
 
I'd say it's a cost thing. If temps are well within acceptable limits using a cheaper cooler they might as well save the costs.
 
So now it is a dual slot cooler that doesn't even vent its hot air out of the case? Nice.
 
Well... the 5770 isn't that hot of a card, anyways.

Combined with a string of failing 5770 squirrel cage fans....

It's annoying, but then again, the memory chips were never cooled, anyways, so why bother with a true dual slot cooler?

If you have positive air pressure in your case, then it naturally will eject the hot air out, anyways.
 
Well, I am all for it it it helps prices fall back to the true $159 MSRP and maybe even under it.
Almost all the 5770 cards now are listed as $175 to $180 and the card is NOT worth it at that price.
 
Seraphic said:
Well, I am all for it it it helps prices fall back to the true $159 MSRP and maybe even under it.
Almost all the 5770 cards now are listed as $175 to $180 and the card is NOT worth it at that price.
Click to expand...

True to that.


However, price/performance compared to a 5750, the 5770 is still better.

My best bet is ATi is deliberately doing this untill they completely clear out the existing 48xx stock.
 
It's negative pressure you want. Positive pressure creates turbulant hot spots, negative pressure will suck all air out and introduce ambient air inside naturally. There are some cases that are designed to work better with positive pressure, but by in large, negative is what you're after. The downside is that you get more dust.
 
jeremyshaw said:
True to that.


However, price/performance compared to a 5750, the 5770 is still better.

My best bet is ATi is deliberately doing this untill they completely clear out the existing 48xx stock.
Click to expand...

Yeah, but I still see 4890 cards for like $190.
They should be less then the 5770 in order to clear the stock.
 
RamonGTP said:
It's negative pressure you want. Positive pressure creates turbulant hot spots, negative pressure will suck all air out and introduce ambient air inside naturally. There are some cases that are designed to work better with positive pressure, but by in large, negative is what you're after. The downside is that you get more dust.
Click to expand...

Will do. I used positive pressure on a HP Slimline system, and got lazy later on, so I run my system naked, for now (well... engineering bench of sorts).

I will try out negative pressure when I get a new case.


On the other hand, the 5770 will not output that much heat...

Seraphic said:
Yeah, but I still see 4890 cards for like $190.
They should be less then the 5770 in order to clear the stock.
Click to expand...

The 4890 outperforms the 5770 by a fair bit, so far.
 
SonDa5 said:
Probably to save cost and to improve cooling.

Possibly uses a different pcb as well.
Click to expand...

The PCB on both appear the same (using NewEgg pics, and a few reviews that have taken off the 5770 squirrel cage cooler).
 
RamonGTP said:
I'd say it's a cost thing. If temps are well within acceptable limits using a cheaper cooler they might as well save the costs.
Click to expand...

This. Taken from the following Anandtech article:

Interestingly enough, we’ve been told that the Phoenix shroud isn’t going to be sticking around for long. The first wave of cards launching today and for the near future will be using the shroud, but once AMD’s vendors begin using their own designs, AMD doesn’t expect most of the vendors to stick with the shroud. XFX has specifically been named as a party that will keep using the shroud on products, but anyone else is subject to change. With a TDP of only 108W, the Phoenix shroud is probably overbuilt and certainly more expensive than vendors would like, where mainstream products come with thinner margins. We would expect the vendors that do switch to move to more traditional dual-slot coolers, likely ones that aren’t shrouded at all and would not blow hot air outside of the case.
Click to expand...
http://www.anandtech.com/video/showdoc.aspx?i=3658&p=2

SonDa5 said:
Probably to save cost and to improve cooling.

Possibly uses a different pcb as well.
Click to expand...

Improved cooling, maybe. Looking at temperature testing on page 13 of the above article the 5770 load temp is 80C whereas the load temp of the 5750 is 84C even though it uses less power and produces less heat. Although granted, the newegg edition cooler on the 5770 has heatpipes whereas the stock cooler on the 5750 does not. The PCB's are different too, the egg cooler only uses a 2-pin fan. No fan speed control. Looks like a cheaper design to me.

EDIT: Interestingly, [H]'s review points to the 5750 being cooler, although this can probably be attributed to less power draw. This could also depend on open or closed case testing.
 
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kniah said:
Improved cooling, no. Looking at temperature testing on page 13 of the above article the 5770 load temp is 80C whereas the load temp of the 5750 is 84C even though it uses less power and produces less heat. Although granted, the newegg edition cooler on the 5770 has heatpipes whereas the stock cooler on the 5750 does not. The PCB's are different too, the egg cooler only uses a 2-pin fan. No fan speed control. Looks like a cheaper design to me.
Click to expand...

It's scary to think how hot the 5770 will run now seeing as the 5750 is 84c at load.
 
Guess overclocking the 5770 with stock cooler is out of the picture. Can you picture two of these crappy fans on cards running in Crossfire? I think both cards will be suffocating.
 
jeremyshaw said:
The 5750 cooler is just a wiremesh, basically.

The 5770 cooler has a copper heatpipe.
Click to expand...

While the heatpipe certainly doesn't hurt, I doubt it will make up for the fact that heat is no longer being exhausted directly out the back of the case. I am fairly certain the phoenix shroud has a copper base with a heatpipe as well and exhausting heat out the back is about as efficient as you can get in terms of dissipating heat. My bet is still that the primary motive for using the egg cooler is to cut cost. It's far cheaper to manufacture (less parts), doesn't include a heatsink for the memory chips on the front of the card, and it also has a cheaper 2-pin fan. The HIS model in the OP also has slower core and memory clocks (800mhz/1150mhz).
 
Between the two coolers, I would actually pay the extra $$ for the original cooler on the HD 5770.
 
The stock cooler blows air out of the case but the heat sink is not that great. Gets hot.
The new heat sink looks much better.
 
SonDa5 said:
The stock cooler blows air out of the case but the heat sink is not that great. Gets hot.
The new heat sink looks much better.
Click to expand...

The heatsink is still dissipating 100+W at full load, so it's natural that it's going to get hot. And hot is a good thing, it means that heat is being transferred to the heatsink and then being exhausted out of the case with the phoenix shroud. I am not convinced that the egg cooler will perform better given this fact. If your ambient temperature goes up, your heat transfer becomes less effective.
 
kniah said:
The heatsink is still dissipating 100+W at full load, so it's natural that it's going to get hot. And hot is a good thing, it means that heat is being transferred to the heatsink and then being exhausted out of the case with the phoenix shroud. I am not convinced that the egg cooler will perform better given this fact. If your ambient temperature goes up, your heat transfer becomes less effective.
Click to expand...

A good deal of the 100W is going to the power circuitry.

But you are correct.
 
kniah said:
The heatsink is still dissipating 100+W at full load, so it's natural that it's going to get hot. And hot is a good thing, it means that heat is being transferred to the heatsink and then being exhausted out of the case with the phoenix shroud. I am not convinced that the egg cooler will perform better given this fact. If your ambient temperature goes up, your heat transfer becomes less effective.
Click to expand...


Correction.

The stock heat sink is loud and doesn't cool the GPU like a decent made heat sink does. The new heat sink probably works better at lowering GPU temps than the one that blows air out the back.
 
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shouldn't be much longer for models with upgraded cooling.

Powercolor has one coming out Nov 30th according to fudzilla (using arctic cooling)
 
needmorecarnitine said:
shouldn't be much longer for models with upgraded cooling.

Powercolor has one coming out Nov 30th according to fudzilla (using arctic cooling)
Click to expand...

Where are the cursed passive models?

The 9800gt was 105W, too, and it had passive cooling.

Of course, there is a passive 5750 already.
 
Can anyone tell if the new cooler heatsinks the voltage regulator like the batshroud (phoenix.. hahahah) cooler does?? I can't quite make it out zooming in on the newegg picture. The older cooler has a spot just for this regulator on the heatsink base, so I'm hesitant to give it less cooling than the stock heatsink if I install an accellero on it.

Edit: Just scoped out newegg and found the HIS model with a similar cooler, apparently that voltage regulator isn't heatsinked at all. I guess I can chance it tomorrow assuming my acellero S1 will fit the card. I'll try to throw a small heatsink on it anyways just to be safe.

I stole a picture from techpowerup and circled the component.

cooler1.jpg


you can see the spot for the regulator on the right here.

http://www.techpowerup.com/reviews/HIS/HD_5770/images/cooler5.jpg
 
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Yoda the area in question didn't make contact with stock heat sink.
No thermal paste as well. It may be notched for clearance.
 
Good call on the paste, figured it was a thermal pad they removed when they took the picture or something. I'll be installing my acellero S1 and hopefully be back later :p

Edit: Well, I can confirm that an Arctic Cooling Acellero S1 first revision DOES NOT FIT a 5770. The cooler fins touch the backplate of the card, and even if I trimmed off a quarter inch of the fins, the stacked DVI connector gets in the way, and would require cutting a heatpipe. Which accelero does fit? The S1 r2, twin turbo??

The 5770 shroud cooler does have a vapor plate, which is awesome, what's not awesome is there's about 1mm gap between the GPU die and the heatsink base, that's all filled with a thermal paste pad thing. The reason for that is the fit between the die cast ramsink assembly and the plastic shroud, they lock together and if there was a little more clearance (may remove the thermal pads on the ramsinks and use paste later) or the copper heatsink base was a bit umm... deeper? the cooling would be WAY better. I cut some heavy duty aluminum foil to perfectly fit the top of the gpu die and stacked it 4 layers thick, with some MX-2 between the layers. This is going to act as a shim, hopefully using more solid metal as a thermal pad instead of paste will help compared to a huge glob of MX2. If the results aren't very good I'll give some other stuff a try to maximize the stock cooler's potential.
 
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Yoda4561 said:
Good call on the paste, figured it was a thermal pad they removed when they took the picture or something.
Click to expand...


There was no thermal pad/paste at all.

Again there is no contact made. It appears to be just to give it a little clearance, possibly a little room to breathe.

The new HD5770 heat sinks doesn't have a heat sink on it as well. May not be that important to put a heat sink on it.
 
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I would wait for a coupon deal from newegg or something.
Card is not worth $180. Should run less then $155.
 
Not when people are buying these as an alternative to the 325 when you can find it 5850.....180 seems to be a "reasonable" price when your consider how expensive the rest of the series is. You can get the XFX one on the Egg for 170 shipped right now.
 
Anyone buy a 5770 with the egg cooler? I'm curious to see what the temperatures are like.
 
kniah said:
Anyone buy a 5770 with the egg cooler? I'm curious to see what the temperatures are like.
Click to expand...


The stock heat sink is weak.

HD5770Heatsink1.jpg



If the new HD5770 cooler has decent heat sink with nice heat pipes I'm sure it will cool the GPU better.
 
Still the vapor plate itself impresses on an efficiency standpoint. Even with the huge gap between the gpu and heatsink, it manages to cool the card rather well given the mediocre airflow of those squirrel cage fans.
 
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