Gigabyte HD 5770 Super Overclock GV-R577SO-1GD Graphics Card


air-cooler heatsink:

The heatsink is made out of aluminum and uses four copper heat pipes to distribute the heat. The aluminum however doesn’t relay the majority of heat to the fins. Instead the copper heat pipes, which are in direct contact with the GPU core. The aluminum of the heatsink also looks like it covers some of the memory. However there is contact between the memory and heatsink.

Overclocking:

The Gigabyte HD 5770 SO has a factory setting @900MHz on the GPU and 1200MHz for the GDR5 memory. Using OC Guru, but leaving the GPU voltage at default, the reviewer managed to achieve a 30MHz overclock on the GPU and a 150MHz overclock on the memory.

Conclusion:

The Gigabyte HD 5770 Super Overclock should preform 4.3% better than a reference GeForce GTX 260. After a testby the reviewers they found only one case where it did actually perform at 9% better than a reference GeForce GTX 260, Splinter Cell: Conviction. In Battlefield: Bad Company 2 it only performed app. 2.5% better and in Metro 2033 it was even worse.

The final three promises that Gigabyte made had to do with temperature, power and overclocking,  vs. a standard Radeon HD 5770. Overclocking capability should be 10-30% higher, but only a 12.5% overclock was achieved. With the GPU only 30MHz or a 3% overclock was possible. In the end temperatures got so high that the reviewers had to stop   overclocking.

It also should have a 5-10% cooler GPU temperature. They did end up living up to this guarantee under factory settings. At idle and load it was 4c cooler than the ATI Radeon HD 5770. When the GPU frequency was pushed by just 30MHz the temperature skyrocketed to 90 degrees Celsius. The cooling solution Gigabyte provided isn’t up to the extra heat that (extreme) overclocking needs.

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~ by benchmarkstest on July 21, 2010.

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