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AMD 4890 Roundup – XFX/Powercolor/Asus

AMD 4890 Roundup – XFX/Powercolor/Asus

Overclocking

Overclocking was handled by our tool of choice – Rivatuner. To test stability we overclocked the core by 10mhz testing for stability with Crysis Warhead. Once artifacting was noticeable we backed down to the last setting. Once a stable core was achieved we then increased memory by 10mhz increments and followed the same procedure as before.

Default
Max OC
XFX 4890 XXX
900/975
970/1070
Powercolor PCS+
950/1050
960/1050
Asus Formula
900/1000
930/1040

Overclocking varies massively from card to card and today we found that the lowest clocked card actually overclocked to the highest figures which was a surprise. We felt it would be interesting to measure how the coolers handled the overclocked speeds.


As we can see the reference cooler while noisier, manages to keep the load temperatures below 85c which is a decent set of results considering the final clock speeds achieved. As we were only able to coax another 20mhz from the Powercolor core the temperatures only rose a few C under load. Both the Asus Formula and Powercolor PCS+ coolers are excellent and temperatures hovered around the 70c mark with our final overclocks. I personally have a slight concern however that the Powercolor memory is sitting right on the red line – out of the box and we could get nothing extra from it at all, even 5mhz.

About Author

Stuart Davidson

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