Radeon HD4870 User Thread

These guys work in a computer shop? They should be shot and pissed on! Go back and tell them to get a job at McDonald's. :banana:

 

Hey I have similar case, P182 and been working on fans, just swapped out the case fans for quieter ones. I also have a fan in the upper harddrive chamber - the case should come with a fan you can put there simply

Also block off evertything at the rear around your GPUs to prevent GPU exhaust air getting recycled

some pics here: post 18, page 2 - thats a stock P182 fan in the upper hard drive chamber.

http://www.notebookforums.com/thread219063-2.html

Im still working on it, ill add new pics in a couple days

 

I left the upper HDD chamber in place to tunnel the air directly to the cards.

"Also block off evertything at the rear around your GPUs to prevent GPU exhaust air getting recycled"
Trying to figure out what you mean by this

 

Is anyone here using the Zalman VF900-CU? I'm tempted to get one and looking for user experience now.

 

see the pictures

 

The esyest wey to the overclocking Hd4870 to the 850 core and 4800 ram!
plug the fan from gpu to the matherboard, use "speedfan" to control the fan on your card,
then use the "AMD GPU Clock Tool" to set the clocks to max!
MY gigabyte hd 4870 runs stable on 850 core and 4800 ram whit fan speed set in the speed fan to 60 70 -%

 

@ZX81

I looked at the pictures... looks nice btw but I can't see where you've blocked anything to prevent hot air recycling on the GPU's. Or have you?

It pretty much looks the same as Myn, the only thing other is the cabling behind the card's... there are only 4 cables there now (for the 2 Sapphires) the master power cable (the very fat one) is behind the mobo's backplate coming out on top to the connector and of course the S/PDIF and TMP cabls are still running there.

 

4800mhz on the RAM? I'd love to see proof of that! :banana:

 

I heard they can go over 6Ghz with uber voltage/cooling.

Wonder how much of it is truth.

 

for you

 

Gained another 3c!

Top fan of my case is blowing air upward and the hot air from it is feeding back into the case (placed a normal tower fan in front of my case to test this).
Thought the opening was big enough (14cm) but ey..

As I'm not going to resolve the heat problem with the stock fan's on my cards I'm going to buy new one's.
Which would you recommend, I'm not a hotrod when it come to 'making it fit' by sawing bits and peaces off?

I found this, an Arctic cooling Accelero TWIN TURBO on the net but are there others out there which are as easy to mount but better?

 

The Arctic cooling Accelero S1 with the TWIN TURBO fans does an awesome cooling job. It brought the temps down on my HD3870 (in the other computer) to ~40C.
It does sit high, so if you have a case with side fans, there could be a problem. I had to remove the top two fans from my CM Stacker 832 case. It didn't change the overall temps much, because the GPU is running so cool - therefor, it's not transferring large amounts of heat to the other components! :bigsmile:
EDIT: I just noticed you're xfired! I don't think you'd be able to connect the xfire connectors over that cooler.

 

Nice OC , gona try it soon. 875 Core was unstable for me in Grid.

Never did benchmark with higher than 810.

How high you score in vantage P-GPU score ?

with 790/1100 now i score 9104.

 

any try or have the Zerotherm coolers on their 4800's. looking to get a new one thats smaller to replace my HR-03... (about 3 years old now).. the 815 model caught my eye.. any thoughts?

 

I would just like to know if this is the correct score for 4870 at stock. Because im not so happy with performance in games. Maybe my psu is to weak? I have 8.7 catalyst.





3dmark 06 score is 15028

 

Well looks like I might be retiring my 8800 ultra for a couple of 4870's in crossfire!
As 2 4870's cost the same as a GTX280 and seems to run better....

 

Looks alright to me.

 

After putting a better cooler on my CPU i dont think it is a cooling issue now... but when i play Crysis and only that game in about a couple minutes my screen goes black and the computer locks then boots.. then i get two error messages after the reboot:

Video hardware error
A problem with your video hardware caused Windows to stop working correctly.

Shut down unexpectedly

i dont know for sure.. but these are my thoughts:

PVM's have heatsinks but might be overheating still
According to GPU-Z 0.2.6 my 3 GPU temps idle are:
29C
72C <-- think might be the problem
42C

or

Catalyst 8.7 is unstable (i just got the card so i havent tried any others)

but all my other games have no issues of crashing so i just find it weird

 

its the foil ducting tape