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Diamond HD 4770 Review

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It's time to find out just how well the 4770 can perform. Will this 40nm beauty be able to compete with the 9800GTX+, or its identical twin the GTS 250? Or, will it be outperformed by older and larger cards? I'll be pairing the 4770 with the OCC test system. Once it has been installed, it will be put through a series of synthetic and real world benchmarks. Will the 4770 be able to hold a place in the GPU market? Let's find out.


Testing Setup:

Comparison Video Cards:


Overclocked Settings:

  • DIAMOND HD 4770 830/850

As always, I wanted to overclock the 4770 using RivaTuner. However, Riva failed to recognize the 4770. For this reason, I was stuck overclocking with the CCC. This turned out to be the strangest overclocking job I have ever done. I looked in the CCC, and saw that the maximum memory clock was 850MHz. I figured the 4770 should be able to handle that no problem, and guess what? I was right. In fact, I feel that the memory should have been able to be pushed farther. The maximum core clock however was 820MHz, which I didn't think the 4770 could handle. To begin overclocking the core clock, I bumped it straight up to 805, and began to run the benchmarks. Every single one passed flawlessly, so it was time to increase the core even more. Instead of going by my usual increments of 5MHz, I jumped the core clock all the way to the CCC's max - 830MHz. Much to my surprise, it actually worked! I was able to run every single benchmark with a core clock of 830MHz without any problems or noticeable loss in stability. This surprised me very much, but at the same time made me long for RivaTuner. The fact that I was able to max at CCC only tells me that the 4770 has even more OC potential. I can't help but wonder how far it will actually be able to go! Another thing I changed in the CCC was the fan speed. At the stock setting, the fan wasn't all that noisy; it made a slight hum, but nothing more. Turning the fan speed up made the thing VERY, VERY, VERY loud. I mean louder than two Thermaltake Thunderblades. I'm not joking - I actually installed two Thermaltake Thunderblades in my case, and couldn't hear them. Not because the Thunderblades are silent, but because the 4770 fan sounds like a train wreck.



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