Featured Articles

TSMC: Volume production of 16nm FinFET in 2H 2015

TSMC: Volume production of 16nm FinFET in 2H 2015

TSMC has announced that it will begin volume production of 16nm FinFET products in the second half of 2015, in late…

More...
AMD misses earnings targets, announces layoffs

AMD misses earnings targets, announces layoffs

AMD has missed earnings targets and is planning a substantial job cuts. The company reported quarterly earnings yesterday and the street is…

More...
Did Google botch the Nexus 6 and Nexus 9?

Did Google botch the Nexus 6 and Nexus 9?

As expected, Google has finally released the eagerly awaited Nexus 6 phablet and its first 64-bit device, the Nexus 9 tablet.

More...
Gainward GTX 970 Phantom previewed

Gainward GTX 970 Phantom previewed

Nvidia has released two new graphics cards based on its latest Maxwell GPU architecture. The Geforce GTX 970 and Geforce GTX…

More...
EVGA GTX 970 SC ACX 2.0 reviewed

EVGA GTX 970 SC ACX 2.0 reviewed

Nvidia has released two new graphics cards based on its latest Maxwell GPU architecture. The Geforce GTX 970 and Geforce GTX…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Tuesday, 17 March 2009 16:02

XFX HD 4870 775M XXX 1GB tested - 3. Overclocking, Consumption and Conclusion

Written by Sanjin Rados

undefined

Review: An overclocked reference design


Overclocking

Radeon HD 4870 XXX 775M runs at 775MHz, 25MHz higher than reference. We managed to further overclock it by 60MHz, which is a great result for the RV770 core. 3DMark 06 results agree with the overclock and the results jumped from 16218 to 16614. We got slightly better results in Left 4 Dead where at 2560x1600, we got 8% better results after we overclocked the card.

We overclocked the memory by another 100MHz, which resulted in a 134.4 GB/s bandwidth, as opposed to the reference 115.2 GB/s.

undefined

Temperatures

When in 2D mode, XFX’s card downclocks the core to 600MHz, whereas the reference card lowers the clocks to 500MHz. As a result of this, XFX HD 4870 XXX card runs some 2-3°C higher in idle, ending up at about 75°C. When under a workload, temperatures hit 86°C, which is one degree less than on reference card, despite XFX’s higher clocks.

undefined

The fan runs quiet in idle mode, and while it gets louder during gaming for instance, we can’t say it’s too loud.

Consumption

Due to higher clocks, XFX HD 4870 consumes a bit more than the reference HD 4870. On the other hand, when compared to the HD 4850 we see over 60W more. That’s why the HD 4870 requires two 6-pin power connectors whereas the HD 4850 needs only one.

undefined


Conclusion

XFX HD 4870 XXX 775M is a great card based on the reference design and comes pre-overclocked. The core runs at 775MHz, which is 25MHz higher than reference HD 4870. One of this card’s upsides is the overclocked GDDR5 memory running at 950MHz (3800MHz effectively). The card packs 1GB of memory, and you’ll be thankful for it when high resolution gaming puts an accent on the memory.

This is a great gaming card, but it's priced higher than standard HD 4870 1GB models due to XFX's overclock. It will run just slightly faster than a reference Radeon HD 4870 card and it will come with a slightly higher price.

Fans of the XFX brand won't mind that this card will cost them some €20 more than a reference HD 4870, and many might go for it, but with HD 4870 and 1GB memory, you are making quite a good choice that will definitely defeat a GTX 260 with 192 shaders.


(Page 3 of 3)
Last modified on Tuesday, 17 March 2009 19:27
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments