ATI Radeon HD 4800 Series Fan Hacking Guide

As everyone already knows by now, the ATI Radeon HD 4800 series of graphics cards is fast. REALLY fast. As a result, the prices of competing NVIDIA graphics cards have fallen so fast that the folks at Santa Clara are still nursing their nose bleeds.

However, users of the NVIDIA graphics cards have one advantage - it is actually easier to overclock the NVIDIA graphics cards. ATI not only restricts the amount of overclocking that can be performed, they also failed (intentionally?) to include the option to adjust the fan speed.

In this guide, we will show you how to hack the fan speed of a Radeon HD 4800 series graphics card so that you can ramp it all the way up!

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Link : ATI Radeon HD 4800 Series Fan Hacking Guide

 

hmm, should we actually added the bios modification too? since it helps lower down the core/mem so the idle temp should be lower..was suppose to post this but then..too many assignments T_T

 

I have a 4850 Sapphire. With a different set of cooler.

The strange thing in GPUZ is, the FAN speed is always 1RPM. I could catch a glimpse of the fan speed rating before that, it was like 3000. Then it becomes 1 all the time. But it is still running at that speed, judging by the smooth whirring sound.

Should I need to look into that? So far so good. The gpu temps are like 50 degrees C constant.

 

nah, his 4850 is using 2pin connector which usually don't have speed sensor.and yeah, i was reffering to 2d clock . So even using other application the speed will be the same..it happen to me too on my old 3870 (as in speed always shows at 1%)

 

After installing + deploying, I could see the RPM - it's some 3000... then hours later it becomes 1RPM. I dunno why that sensor is so fickle.

 

the bios fix? nope..just some application will do just need to open ccc to check if the correct 2d clock is being display and if not mistaken, this only applies to 4850 cards