Sapphire HD6670 Ultimate, HD6750 & HD6770 Reviewgotdamojo06 - June 23, 2011
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After pulling the Sapphire HD6770 out of the packge, you are going to see that there is an upgraded cooling solution compared to the HD6750. The cooler that Sapphire put on the card is much larger and covers just about the entire card and hangs off the back end. You are going to see that the Sapphire logo and Radeon HD6770 are printed on the left hand side of the fan and on the right hand side you will find the AMD Radeon badge printed. In the center of the fan you will once again find a Sapphire logo, however this one is not holographic. The PCB of the card is still a bright blue color and looking at the back, the cooler is installed the same way with four screws to keep it in pace. You are still going to find DirectX 11 support on the Sapphire HD6770 as well as Shader Model 5.0, OpenCL 1.1, and DirectCompute 11 all to help accelerate your graphics intensive applications for better rendering time.
The Sapphire HD6770 comes with support for three different display adapter connections. You have support for HDMI, DisplayPort, as well as DVI. You are also going to be able to get a VESA monitor to connect to the card with the DVI to VESA dongle that was included in the package. The cooler works the same way as the one on the HD6750, fresh air is going to be sucked in through the fan and spread out though the innards of the cooler and expelled through the front and back of the card out the openings. You do get CrossFireX support on the HD6770 and there are two connections at the top of the card that will allow you to expand your graphics power by adding another HD6770 to your system. There is a single PCI-E 6pin power adapter that is located at the back of the card under the back end of the cooler. However, this adapter is somewhat hard to get to because of how far the cooler hangs over the back end of the card.
The Sapphire HD6770 graphics card has the GPU positioned in the center of the PCB with the four memory modules positioned around it; two at the top and two to the right hand side of it. The Hynix H5GQ2H24MRA T2C 110A memory modules installed on the card are rated to operate at 1.5V for both the VDD and VDDQ with a 32ms refresh rate. The modules are made lead and halogen free, giving them the ROHS3 compliant certification. These chips are the first generation die. The GPU comes clocked in at 850 MHz at stock speeds and was put together using a 40nm, manufacturing process.
The cooler that is installed on the Sapphire HD6770 is what you are going to typically find on your reference cards and your more mid-range performing cards. The cooler takes advantage of not only a large heat sink but putting heat pipe technology to its advantage. The base of the cooler is a copper base that sits directly on top of the GPU core. There are two copper heat pipes that come off of the base and into two different directions into the fin array to help dissipate the heat and keep it away from the core, allowing for the heatsink to pull more heat off of the GPU. The fan is installed in the center of the heat sink and has the outer plastic shell to help direct the airflow to make sure the cooler air being pulled in is used properly.