AMD Radeon HD 5870 Video Card Overclocking

[Apoptosis]

With the launch of the AMD Radeon HD 5870 graphics card fresh on our minds, we couldn't help but wonder how far we could overclock the card if we weren't limited by what Catalyst Control Center capped us at? Read on to see what we can do with the AMD GPU Clock Tool on our 5870 that comes stick at 850MHz GPU and 1200MHz Memory.

Wasting no time, we started ratcheting up both the GPU and memory speed. At default voltage, we were able to reach a maximum stable overclock of 935MHz GPU and 1280MHz Memory. This is a gain of 85MHz and 80MHz respectively. We were able to get the card to run at 950MHz but would lock up midway through the second 3D Mark Vantage test. With a little more voltage 950-1000MHz should not be a problem on the Radeon HD 5870.

Article Title: AMD Radeon HD 5870 Video Card Overclocking
Article URL: http://www.legitreviews.com/article/1090/1/

[Velo:Sity]

Not bad, what about the temps?

[spitter]

$25 for the fan....
$80 for the heatsink.....
Zip tie to hold them together....priceless.


And still no love for the folders, how does it fold.

[jebo_4jc]

I'd like to see some temperature data as well

[Bwall]

Without AOD working I was not able to verify the temps, but I have yet to see it break 70c in my system. I'll try to get GPU-z going with the overclock tonight.

As far as folding goes, we are not seeing the full power of the 4800 series yet, which means that there is not going to be a lot of speed up with the 5870. I know that they are in the process of re-writing the ATI GPU client but no timeline has been given.

There are going to be some great overclocks coming out of this card, at least another 100MHz GPU over what I got here once you can tweak the voltage a bit.

[geokilla]

http://www.hardwarecanucks.com/news/vid ... eries-gpu/

Voltage tweaking already. Seems that these gPUs can go up to at least 1.35V on the core and 1.4V on the RAM.

Performance Boosts with Voltage Tweak and Extreme Overclocking with SmartDoctor

The ASUS EAH5870/2DIS/1GD5 and EAH5850/2DIS/1GD5 are equipped with Voltage Tweak technology, as part of the SmartDoctor application. It enables users to raise GPU voltages from 1.15V to 1.35V and from 1.088V to 1.4V respectively, boosting GPU and memory clock performance from 850 / 725 MHz to 1035 / 1050 MHz and from 4800 / 4000 MHz to 5200 / 5200 MHz respectively. Such extreme performance upgrades raise the EAH5870 and EAH5850’s 3DMark Vantage Extreme Preset score from 8,087 to 9,252 and from 6501 to 8987—an unbelievable 17% and 38% improvement compared to other reference designed boards*. Gamers and overclockers can also benefit from ASUS SmartDoctor, the world’s first overclocking utility that allows the tweaking of GPU voltages on the EAH5800 Series graphics cards. ASUS SmartDoctor enables users to boost both voltages and overall performance with just a few clicks—without the hassle of flashing the BIOS or running the risk of damaging the graphics card.

Holy crap.

[Gomeler]

Looks like the reference PCB is using a Volterra PWM controller which means. Considering how the stock PCB is being used in this card I'd say they are addressing the controller via the I2C bus, meaning we can use Rivatuner to read and write to the PWM and adjust the registers manually. This means as much vGPU as the controller is electrically capable of delivering

[DL13]

http://www.hardwarecanucks.com/news/vid ... eries-gpu/

Voltage tweaking already. Seems that these gPUs can go up to at least 1.35V on the core and 1.4V on the RAM.

Performance Boosts with Voltage Tweak and Extreme Overclocking with SmartDoctor

The ASUS EAH5870/2DIS/1GD5 and EAH5850/2DIS/1GD5 are equipped with Voltage Tweak technology, as part of the SmartDoctor application. It enables users to raise GPU voltages from 1.15V to 1.35V and from 1.088V to 1.4V respectively, boosting GPU and memory clock performance from 850 / 725 MHz to 1035 / 1050 MHz and from 4800 / 4000 MHz to 5200 / 5200 MHz respectively. Such extreme performance upgrades raise the EAH5870 and EAH5850’s 3DMark Vantage Extreme Preset score from 8,087 to 9,252 and from 6501 to 8987—an unbelievable 17% and 38% improvement compared to other reference designed boards*. Gamers and overclockers can also benefit from ASUS SmartDoctor, the world’s first overclocking utility that allows the tweaking of GPU voltages on the EAH5800 Series graphics cards. ASUS SmartDoctor enables users to boost both voltages and overall performance with just a few clicks—without the hassle of flashing the BIOS or running the risk of damaging the graphics card.

Holy crap.

I wander if SmartDoctor will will work on non ASUS cards? Have you tried it?