Asus Radeon HD 6870 DirectCu

Temperatures, Noise & Overclocking

Asus Radeon HD 6870 DirectCU


AMD Phenom II X6 1090T Black Edition
BIOSTAR TA890FXE Motherboard
4GB G-Skill Flare @ DDR3-1600
Samsung Spinpoint F1 320GB SATA II Hard Disk Drive
Asus EAH6870 DirectCu
Samsung 22x DVD+/-RW SATA
Windows 7 Home Premium x64

Temperatures & Noise

The temperatures themselves are fairly similar to the reference cooler, however what is remarkable is its considerably lower noise levels.

For a load temperature of ~79c, less than 45% fan duty speed was required. Once increased to 50% this dropped to nearer 76c. If however you have no respect for your ears (or you wear a headset) then crank the fan up to 100% for temperatures as low as 65c.

Good news all round. Finally let's get overclocking.


Asus Radeon HD 6870 DirectCU

Our overclocking endeavours were somewhat successful, as we managed to increase the 6870's operating frequencies from 915MHz / 1050MHz to 1018MHz / 1252MHz. In order to achieve this, the operating voltage had been increased to ~1.25V purely to ensure long term stability.

Despite the improved cooling performance, we deemed temperatures too high to raise GPU voltages to the levels required for a substantially higher overclock.

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Most Recent Comments

28-01-2011, 04:30:55

No comparisons with the GTX 560 Ti? It's right in that price range.Quote

28-01-2011, 04:34:02

Originally Posted by Zeals View Post

No comparisons with the GTX 560 Ti? It's right in that price range.
Mul compared to the 460 as that is what he has tested on his system in the past. We are all aware that the 560 is better than the 6870 though Quote

28-01-2011, 05:01:08

That's right, the GTX 460 is the only other graphics card that has been permenently stationed on my testbed as of late.

I had thought about the 560 Ti, but without trying it I could not add it to my graphs. What you will see however is that the 560 will match and probably outpace the 6870, given that it has 48 more stream processors (over the 460), higher core/memory clocks and the scope to overclock further.

I maintain that the 6870 DirectCu is a nice enough product however it would need a RRP around the £175-180 mark to really make sense.Quote

28-01-2011, 06:20:06

The GF 560 makes this card look like a baby considering you are paying the same money, I think the GF 500 series has made anything coming out of AMD look like a baby even if it comes from a big name like ASUS and AMD have to pull something out quickly or reduce there prices seriously or face another period of losses and I really think it is ironic that NVIDIA can turn the tables around in just a few months and just shows us how unpredictable the pc component market has become because a lot of people were predicting that NVIDIA was going down a few months earlier when the 470 & 480 came out.


02-02-2011, 12:54:35

hey is it possible to run this in crossfire with a HD 6850?

Sorry im new to this, about to build my own!Quote

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