Sapphire Radeon HD 4890 1GB Review

by Michael "SKYMTL" Hoenig     |     April 2, 2009

Overclocking Results

Unlike most other graphics cards on the market, ATI seems to be actively marketing the HD 4890’s overclocking abilities. Please note that we used the stock cooler with the default fan speed. Without the support of other aftermarket overclocking tools, we were somewhat limited by the Catalyst Control Center’s self-imposed overclocking limits but that didn’t stop us from getting some downright jaw-dropping results.

Final Core Overclock: 1Ghz
Final Memory Overclock: 1200Mhz (4800Mhz effective)

Sweet merciful Lord. Impressive isn’t it? And to make matters even better, we maxed out the Catalyst sliders which means this puppy has even more left in the tank! Considering we are now hearing reports that some manufacturers (like Sapphire) will be releasing cards which have a pre overclocked core running at 900Mhz or even 950Mhz, we have to wonder what the limit is on these cards. Not only did the core hit the 1Ghz mark but the memory is now flirting with the magical 5Ghz mark.


Latest Reviews in Video Cards
November 24, 2015
After finally getting some hands-on time with AMD's new Radeon Software Crimson, we have come to respect it in a big way.  Could this be the one thing that makes people rethink AMD's drivers?...
November 18, 2015
AMD's R9 380X is meant to fill the gap between the R9 380 and R9 390 but with prices ranging from $230 to $260, this new card will need great performance to differentiate itself....
November 12, 2015
They may be two very different cards at wildly separate ends of the price spectrum but AMD's R9 Nano and ASUS' GTX 970 Mini find themselves competing in the same ITX bracket. Is one really "better" th...