The Gigabyte HD6770 Silent Cell has a completely passive cooling solution. This HD6770 addition to Gigabyte’s Silent Cell series claims even lower temperatures compared to the traditional actively cooled reference designs. Since the HD 6770 Silent Cell carries Gigabyte’s Ultra Durable VGA technology, it is equipped with a 2 oz. copper PCB, Tier 1 memory chips, 100% Japanese solid capacitors, Ferrite core chokes and Low RDS (on) MOSFET. For display connectivity, the Gigabyte HD 6770 Silent Cell video cards have a DVI, HDMI and a DispayPort for 3-way Eyefinity gaming. Users looking for a quiet gaming experience without compromising thermal performance need look no further than Gigabyte’s HD 6770 1GB GDDR5 DirectX11 Silent Cell video card.
For overclocking, we used AMD's built-in Overdrive software inside the Catalyst Control Center. This program also doubles as a temperature monitor and has a quick OC test feature. For complete stability, the final overclock used in this review was stress tested in OCCT for an hour. Since there is no active cooling, the memory couldn’t be pushed too high, despite the fact that these are very good quality Tier 1 memory chips. It was still very good, all things considered, and reached 1300MHz. The core, however, overclocked very well, as expected of a Juniper chip, and the first goal was to reach the HD 6770 factory OC levels at 880MHz, which is 30MHz more, and the HD 6770 Silent Cell did so with ease.
Even though we are not applying voltages to overclock, temperature was still a concern because of the passive cooling design. The temperature was monitored throughout, as the core clock was bumped incrementally, but the thermal levels remained surprisingly manageable. In fact, it was a lot lower than I expected.
The final core overclock of 930MHz was reached and anything higher led to artifacts in OCCT. The core temperature increase was very minimal, at only 3C more under OCCT load, although the Silent Cell heatsink itself was very hot to the touch. Real-world temperature performance was even better as it only peaked in the mid-60s running the latest DirectX11 games. Read more...
GIGABYTE ATI Radeon HD6770 1 GB DDR5 DVI/HDMI/DisplayPort PCI-Express Video Card GV-R677SL-1GD
Price $144.99
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For overclocking, we used AMD's built-in Overdrive software inside the Catalyst Control Center. This program also doubles as a temperature monitor and has a quick OC test feature. For complete stability, the final overclock used in this review was stress tested in OCCT for an hour. Since there is no active cooling, the memory couldn’t be pushed too high, despite the fact that these are very good quality Tier 1 memory chips. It was still very good, all things considered, and reached 1300MHz. The core, however, overclocked very well, as expected of a Juniper chip, and the first goal was to reach the HD 6770 factory OC levels at 880MHz, which is 30MHz more, and the HD 6770 Silent Cell did so with ease.
Even though we are not applying voltages to overclock, temperature was still a concern because of the passive cooling design. The temperature was monitored throughout, as the core clock was bumped incrementally, but the thermal levels remained surprisingly manageable. In fact, it was a lot lower than I expected.
The final core overclock of 930MHz was reached and anything higher led to artifacts in OCCT. The core temperature increase was very minimal, at only 3C more under OCCT load, although the Silent Cell heatsink itself was very hot to the touch. Real-world temperature performance was even better as it only peaked in the mid-60s running the latest DirectX11 games. Read more...
GIGABYTE ATI Radeon HD6770 1 GB DDR5 DVI/HDMI/DisplayPort PCI-Express Video Card GV-R677SL-1GD
Price $144.99
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