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The 4800 series Driver, OCing, Cooling and Tweaking Thread

ben3003

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Does anyone know what is the cause of stuttering when i am running 3dmark06? It is like the camera will choke for maybe 0.5 second when it is moving. This happens when i am tunning my 4850 to 725/100 at 1.2v. If i am running at stock, i dont see any choking.
 

EastCoasthandle

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Does anyone know what is the cause of stuttering when i am running 3dmark06? It is like the camera will choke for maybe 0.5 second when it is moving. This happens when i am tunning my 4850 to 725/100 at 1.2v. If i am running at stock, i dont see any choking.

You probably need better cooling.
Do you increase the fan speed when you OC?
Are the vregs actively cooled?
Have you attempted to re-apply the thermal compound with something better like MX2?
When was the last time you updated directx? Grab the March 2008 update and install it in safe mode.
In the OP, you have net frameworks 2.0 and Visuall C++ 2005. Are those installed?
 
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ben3003

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I am using accelero s1, havint around 50c when load. What is VReg? is it the mosfet area? I am running naked at that area. The GPU-Z GPU temperature #2 is showing around 40-50c when load. I will try updating the directx and check the net frameworks.
 

EastCoasthandle

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I am using accelero s1, havint around 50c when load. What is VReg? is it the mosfet area? I am running naked at that area. The GPU-Z GPU temperature #2 is showing around 40-50c when load. I will try updating the directx and check the net frameworks.

The vregs are found near the rear of the card. They are small, black squares lined up in a row. These are usually covered by a heatsink but none are available as of yet. From reading your post, it appears they are not sinked. Therefore, I have to wonder if there is enough air getting to them?




In any case, regardless of what they are called, this is what I am talking about. However, the area around the highlighted needs to be actively cooled.
 
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ben3003

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oh, my accelero got a 120mm fan running at max speed cooling the heatsink and i think its air will cool almost all the components beside it as the heatsink itself is quite big. Furthermore, i got a intake fan direct to the card, so airflow shouldnt be a prob. I dont know is the stuttering random or what, even i did use the stock bios, it stutters at the stock clock also. And i try to reflash again, no stutter prob. I found something about vantage is having micro-stuttering prob with SLI and crossfire card. I think should be like what they said, but i am running on single mode.
 
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oh, my accelero got a 120mm fan running at max speed cooling the heatsink and i think its air will cool almost all the components beside it as the heatsink itself is quite big. Furthermore, i got a intake fan direct to the card, so airflow shouldnt be a prob. I dont know is the stuttering random or what, even i did use the stock bios, it stutters at the stock clock also. And i try to reflash again, no stutter prob. I found something about vantage is having micro-stuttering prob with SLI and crossfire card. I think should be like what they said, but i am running on single mode.

I noticed stuttering too, but only 3Dmark06. This is at any clock for me, I haven't ever ran my card at 625:laugh:. My Vregs are cooled with heatsinks, and a 40mm fan mounted on them:), and my GPU temp is 62 Deg load. Maybe a driver issue?
 

ben3003

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i am using 8.6 hotfix currently. I really hope it is a driver issue. If GPU temp #2 is showing Vreg temperature, i think it should be fine, the stock one are giving a reading for 50-70c when load.
 

EastCoasthandle

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Does anyone know what is the cause of stuttering when i am running 3dmark06? It is like the camera will choke for maybe 0.5 second when it is moving. This happens when i am tunning my 4850 to 725/100 at 1.2v. If i am running at stock, i dont see any choking.

Are you coming from a nvidia video card? In any case try this:
-uninstall 3d06
-reboot
-defrag hard drive
-install 3d06 v1.1.0
-Install the February 2008 hotfix
-run 3D06
 
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EastCoasthandle

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okay fellas anyone hear of the DDR5 degrading on these cards. My card is artifacting now in 3dmark06. A guy posted on my trouble page that this is a issue, has anyone heard of this before?

here is the link to the thread http://forums.techpowerup.com/showthread.php?t=65117&page=3

No, never heard of it as an issue before nor are there mass reports of such a problem (that I have found). Also, there is more then one reason why a card is artificating.
 
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No, never heard of it as an issue before nor are there mass reports of such a problem (that I have found). Also, there is more then one reason why a card is artificating.

Your right but wanted your impute before I send it back, I think it's heat the cards gets so hot sometimes I'm scared it will melt my PCIE plastic. The gpu is at say 73c sometimes with the fan turned up but the card PCB is one fire with heat. I'm thinking the heat killed something before I manually set the fan.
 
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Does anyone know what is the cause of stuttering when i am running 3dmark06? It is like the camera will choke for maybe 0.5 second when it is moving. This happens when i am tunning my 4850 to 725/100 at 1.2v. If i am running at stock, i dont see any choking.

I get that exact same problem in 3dm06, but it doesn;t stop for 0.5 second, more like 0.1 secs every one second on average.

I think it may just be immature drivers
 
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I get that exact same problem in 3dm06, but it doesn;t stop for 0.5 second, more like 0.1 secs every one second on average.

I think it may just be immature drivers

that might be aswell, but mines freezing unless I underclock the card. Was a very nice card very well built I wonder if my board could have killed it? I have heard rampages have been know to do that aswell. The last part is pure speculation on my part.
 

EastCoasthandle

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For those having a problem, could you post a screen shot of Everest's Sensor log?
Click on Computer then Sensor.
 
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ben3003

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I get that exact same problem in 3dm06, but it doesn;t stop for 0.5 second, more like 0.1 secs every one second on average.

I think it may just be immature drivers

Ya it is 0.1 seconds, a very short choke. Sorry my timing wasnt that good lolz. Really hope it can be fixed.
 
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Ya it is 0.1 seconds, a very short choke. Sorry my timing wasnt that good lolz. Really hope it can be fixed.

Me too, I'm not too worried about it as gaming performance is fine. Will hopefully be fixed in the next driver release.
 

ben3003

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But i scare it is the hardware problem.

Lately, i keep on trying with original bios and modified bios, tweak the clock speed here and there, and i came to a conclusion: The card will stutter at vantage and 3dmark06 whenever u try to OC it. Running everything at stock, there is no stuttering. Running it at stock bios, tweak to 690/1000 at CCC, stuttering happens again.

Another update: I think it is just random, i tried to run vantage again at stock and it stutter even worst lolz. Hopefully 8.7 will fix a lot of things for 4800 series.
 
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OK, time is almost up and we need to start up a thread dedicated to all 4800 series:
...
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
PROGRAMS NEEDED​

Make sure you have net .NET Frameworks 2.0 installed, reboot. Next install .NET Compact Framework 2.0 Service Pack 1, reboot. Finally, download and install Visual C++ 2005.

Keep in mind that MS Visual C++ 2008 is the lastest build and is compatible with .NET Framework 3.5
x86 version

If you use Futuremark's 3D Mark 2006 v1.1.0 make sure you have installed the February 2008 hotfix

You will also need the lastest build of directx using March 2008 update and install it in safe mode.

I've installed .NET Frameworks 2.0 but until I saw this post I didn't know that I needed the .NET Compact Framework 2.0 Service Pack 1. Why do I need Visual C++ 2005 or the latest build of directx?

So far I've only installed my HD 4870 on a test bench using all default settings (mb, cpu, memory, gpu, etc.). I'm not ready to share my results yet although I've notice one glitch. As soon as I get every thing set up to my satisfaction I'll post some images. I want to find my max system oc first.

I will say that I got a lousy score from 3DMark06 but I hope when I install the February 2008 hotfix that will change.

My Video Test Bench
--------------------
E6600 @ currently 2400MHz
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Gigabyte GA-965P-DS3
OCZ Flex XLC 2GB (2x1GB) DDR2-1150
Sapphire HD 4870
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i have a powercolor 4850 and the profile trick to change voltages doesn't work on my card, it still says 1.123v on my mulitmeter when i set it to 1.263 in the profile. this happen for anyone else?
 

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Aquagratix 4870 arrived...


... thin, copper, cool ;)

 
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I was hoping someone could do an at-the-wall comparison of before/after power consumption. I love my 3850 because it uses so little power at idle so I was extremely disappointed to see the 4850 use a LOT more at idle when it doesn't use that much more at load.

Ive just done a comparison.

First of all using purely bios editing and the msi bios (2d clock of 160/500). With an e8400@stock and

HD4850 @ 720/1075 using 2d voltage 0.935v, 3d voltage 1.185v idle ~ 115w , load (peak) ~ 286w

Then after pencil modding where

HD4850 @ 800/1075 using 2d voltage 1.046v, 3d voltage 1.329v idle ~ 120w , load (peak) ~ 346w.


Note that all voltage are real voltages measured using DMM. Load was created by running furmark and orthos at the same time.

If I overclock the e8400 to 4ghz, around 40w at load is added. As you can see, overclocking does have a huge power cost and in fact my reputable corsair psu is showing signs of strain. But its interesting to see that idle usage isnt very different. this is largely due to the very low clocks of the msi bios and therefore making voltage changes less significant.
 

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I think it's heat the cards gets so hot sometimes I'm scared it will melt my PCIE plastic.

the hottest components of the card will reach around 100°C, all cards are engineered to withstand 105° operating temperature. asic is guaranteed to work up to 120°c. pcie plastic wont melt unless your house is burning.
 
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So are all the components on the boards certified for 100c+ then w1zzard?
 
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