SPCR

Hi,

I`ve just read that accelero s2 rev2 can not cope with radeon hd4870 even with the twin turbo fans and 120mm fan. Here is the link:

http://www.forumdeluxx.de/forum/showthr ... ost9575293

It is on German.

well, I considering 4870 and accelero s1 rev2 but i want to know ur experience with this combo.

Thanx

It would be nice to see their thermal images with the stock cooler that uses two heatpipes... Its not unusualy to see aprts of card running up tp 120 degree's C in VGA cards without being danger to card even when adequately cooled.

However the card is seriously hot one. So you may require some really... really mean... like Accelero Extreme type cooler for HD 4870...

I am really surprised by that, and I also find it odd that they used a heat detecting gun rather than software like the rest of the world do.!

My experiences with the cooler running little brother the 4850.

viewtopic.php?t=49003&postdays=0&postorder=asc&start=30

I have not looked int my strange crashing problem further to find out if the problem was indeed heat related or not, and if so, what was getting too hot. I then found out that I needed a tiny amoyunt of airflow to keep the temps quite nice, so in reality a 5v 120mm fan should be perfect for the 4870.


Andy

andyb wrote:I am really surprised by that, and I also find it odd that they used a heat detecting gun rather than software like the rest of the world do.!

This was not a professional review, but rather a guy who luckily had his hands on both: the IR camera and a HD4870. He also reported the card temperatures off GPU-Z. There's nothing more you can expect.

I get this feeling that most cards actually get very hot im some spots. However, hardly anyone points an IR camera at a running card, so we just don't know about it.

Here is proof that the 4850 with a tiny amount of airflow blowing over the S1 will be more than enough. A manufacturer will soon be releasing a slightly overclocked 4850 with the venerable VF900 cooler - which as we know cant compete with the S1 and a tiny amount of airflow.

http://www.theinquirer.net/gb/inquirer/ ... ces-hd4850

Exactly how the 4870 works with the S1 I cant answer, but I doubt it will have any problems at all with a 5v 120mm fan.


Andy

The 4870 draws about 40W more than the 4850 and IMO it's mostly the GPU itself, at +20% frequency and I suppose higher voltage (around 10% maybe) too.
Now, the AC S1 with a slow 120 mm fan could properly cool the 4870 GPU itself, but AFAIK the overheating occurs in the VRM area.
I saw that news on vr-zone, but can't find the article again to link to it, sorry. It had pictures showing the VRM area getting scorching hot.

Dont know if this is the pic you mean, anyway, can you place small heatsinks on those?

Doesnt look like they are entirely flat.

Shadout wrote:can you place small heatsinks on those?

Doesnt look like they are entirely flat.

TIM is your friend, I suppose.

They are flat, just have some kind of transparent film on them. Kinda hard to fit heatsinks on them, so small :X

krille wrote:

Shadout wrote:can you place small heatsinks on those?

Doesnt look like they are entirely flat.

TIM is your friend, I suppose.

Was just worried they had something on them that was not supposed to be covered, but nvm, I can see thats not the case.

Sorry for the noob questions, but beside the actual RAMs and the ones on the picture, is heatsinks needed on any other parts of the card?

It`s a good idea to cool the voltage regulator especially in more power hungry cards. If you look at the underside of the factoy heatsink you can get a good guideline of what to cool.

..

Don't know if this is relevant or has been posted before... Thermalright now list the HR-03 GT as compatible with the 4870.

Clickin' chicken

W00t!

I have a hybrid cooler, the arse-end of the 4850 and is passivve cooling of the mosfets etc etc directly of off of the card, with direct but minimal aircolling over the card and its passive cooled compnents, with an S1 cooling the GPU directly, and a slow running 80mm fan at a 45 degree angle sucking in cool air and blowing it the length of the card. Under testing my GPU is 24+C cooler than with the standard card, how is it overheating.??? Or is it faulty.???


Andy

doesnt the s1 have an option for two quiet fans?

eh?

So anyone's got hands-on experience with the HD 4870 + S1 combo? Does it work well? What fans do you have at what speeds to make it work in what case?

Btw of course it copes, the 4870 + S1 combo is officially supported by Arctic Cooling. http://www.arctic-cooling.com/vga2.php?idx=147
I can't see how it could possibly be any worse than stock cooling (sure it hasn't got DHES, but look at the size of that thing). Just get decent airflow. I'm more interested in what decent airflow actually means?

Thanks!

krille wrote:So anyone's got hands-on experience with the HD 4870 + S1 combo? Does it work well? What fans do you have at what speeds to make it work in what case?

Btw of course it copes, the 4870 + S1 combo is officially supported by Arctic Cooling. http://www.arctic-cooling.com/vga2.php?idx=147
I can't see how it could possibly be any worse than stock cooling (sure it hasn't got DHES, but look at the size of that thing). Just get decent airflow. I'm more interested in what decent airflow actually means?

Thanks!

I've got the saphire 4870 & the S1 rev 2 (with a 1200 rpm scythe s-flex on it)
I can run it passive when idle (temp will go up to about 45° idle)
When idle & the fan on max, the temp stays around about 40°
When using the fan on 1200 rpm, the max temp under full load doesn't get higher than 52°
So all by all, I'm very happy with the performance of the S1 rev2

Xbitlabs have measured the power draw of the GTX 280 and 260, and added the previously missing 4870 to the chart:
http://www.xbitlabs.com/articles/video/ ... html#sect0
They measured only 130W for the 4870, while the 4850 was measured at 110W. I find it strange, since many other reviews gave a larger difference.
I wonder how large is the power draw variation between the 4870 cards, the reviews were consistent on the 4850.

In my experience, X-bit labs usually measure the actual power draw of the card, while other sites usually measure the power draw of the entire rig. With a better graphics card your entire system will be pushed further giving the impression that the better graphics card draws more than it actually does. So this makes sense.

..

The page is here.

..

Mrc112 wrote:

krille wrote: I've got the saphire 4870 & the S1 rev 2 (with a 1200 rpm scythe s-flex on it)
I can run it passive when idle (temp will go up to about 45° idle)
When idle & the fan on max, the temp stays around about 40°
When using the fan on 1200 rpm, the max temp under full load doesn't get higher than 52°
So all by all, I'm very happy with the performance of the S1 rev2

Any Ram-heatsinks on chips or similar besides the S1? What case is it in and do you provide it additional airflow?

IgaZ wrote:

Mrc112 wrote: I've got the saphire 4870 & the S1 rev 2 (with a 1200 rpm scythe s-flex on it)
I can run it passive when idle (temp will go up to about 45° idle)
When idle & the fan on max, the temp stays around about 40°
When using the fan on 1200 rpm, the max temp under full load doesn't get higher than 52°
So all by all, I'm very happy with the performance of the S1 rev2

Any Ram-heatsinks on chips or similar besides the S1? What case is it in and do you provide it additional airflow?

Nope, no ram-heatsinks, I only used the S1 heatsinks (& the scythe on the S1 of course

My rig:
P182 with 3 antec fans replaced by 3 noctua's & excellent cable management (a SUPERB job done by my pc store)
Gigabyte X48-DQ6 mobo
E8400 with TRUE+scythe s-flex

I'll try to find this weekend out if the VRM area gets hot or not

@Mrc112: a friend of mine just bought a 4870 and a S1 rev. 2, but he seems to have some problems regarding the voltage regulator heatsinks.
Which heatsinks did you use for the VRM part of the card?
Thx!

ps: lol, ik zie nu pas dat je ook in België woont, it's a small world after all

DragonOptical wrote:@Mrc112: a friend of mine just bought a 4870 and a S1 rev. 2, but he seems to have some problems regarding the voltage regulator heatsinks.
Which heatsinks did you use for the VRM part of the card?
Thx!

ps: lol, ik zie nu pas dat je ook in België woont, it's a small world after all

THe world gets even smaller, I'm "rouchken" from the Tones forum

Some RAMsinks and works just fine.

In that picture you circled a small black ic chip and said you must put on on their. What is that exactly? I didn't put one on mine and my cards fine. But I want to make sure if I really need it...

Checked the temps this weekend
Furmark was used to stress the card, GPU-Z was used to measure the temps.

With the S-flex on full power (1200rpm), the 4870 itself reached 51° (which is very doable), but the VRM reached 92° according to GPU-Z

Is this too hot or can this card cope with this temp ?
If so, which sinks would be advised to use on the VRM ?

Mrc112 wrote:Checked the temps this weekend
Furmark was used to stress the card, GPU-Z was used to measure the temps.

With the S-flex on full power (1200rpm), the 4870 itself reached 51° (which is very doable), but the VRM reached 92° according to GPU-Z

Is this too hot or can this card cope with this temp ?
If so, which sinks would be advised to use on the VRM ?

I'd say, if your card didn't crash running furmark, then you're fine, since it stresses the card more than anything else ever would.