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The MSI R7770 Power Edition Transthermal OC arrives in a very distinctively designed box featuring the enhanced PWM design.
Another fancy gatefold design which details the military class components and enhanced PWM design. This card is tied into the Afterburner software which opens up various voltage settings to improve the chances of successful overclocking. They also mention their ‘Dust Removal Technology' along the bottom of the box panel.
The bundle includes a software disc, secondary fan, video and power converter cables and some literature on the product. This is no ordinary video card however so it is worth reading the literature, for a change.
The video card is built to match the motherboard colour scheme, detailed on the previous pages. The PCB is dark, and the cooler is tough plastic, also black, with a dual blue strip running along the full length. A large fan is placed centrally.
The R7770 is Crossfire capable, but only in a two way configuration. It requires a 6 pin power cable for stable operation.
It includes a DVI, HDMI and DisplayPort connector on the panel, all of which are full size. The MSI logo is cut into the backplate.
The really interesting topic of conversation is the dual fan system. The images above show the secondary blue fan mounted on top of the primary cooler fan. This will take up more room in the chassis however.
On the cooler are two black clips which can be pushed in, so the cooler can be ‘extended' in length.
When the cooler is fully extended, this will leave enough space to mount the other fan above the heatsink, alongside the primary black fan.
The blue fan slots into a plastic section of the cooler and can be then locked into place, with two small screws.
When the secondary fan is installed, the cooling performance should be significantly improved.
The fan plugs into a tiny header on the side of the cooler as shown above.
The image above highlights the video card in two states of operation. The bottom image is the default shipping mode and above, with the extra fan installed alongside the main fan. It adds around 3-4 cm's to the overall length.
The Cooler is easily removed, exposing the single heatpipe copper cooler and aluminum fins.
The CPU Z screenshot highlights the 28nm AMD Cape Verde core, with 1GB of GDDR5 memory connected to a 128 bit memory interface. The HD7770 ships with 16 ROPs with 640 Unified Shaders.
| Product | MSI R7770 Power Edition Transthermal OC | AMD HD7770 1GHZ |
| Process | 28nm | 28nm |
| Transistors |
1.5 billion
|
1.5 billion |
| Engine Clock |
1,100 mhz
|
1000mhz |
| Stream Processors |
640
|
640 |
| Compute Performance | 1.28 TFLOPS | 1.28 TFLOPS |
| Texture Units | 40 | 40 |
| Texture Filrate | 40.0 GT/s | 40.0 GT/s |
| ROPs | 16 | 16 |
| Pixel Filrate | 16.0 GP/s | 16.0 GP/s |
| Z/Stencil | 64 | 64 |
| Memory Type | 1GB GDDR5 | 1GB GDDR5 |
| Memory Clock | 1,125mhz | 1,125mhz |
| Memory Data Rate | 4.5 Gbps | 4.5 Gbps |
| Memory Bandwidth | 72 GB/s | 72 GB/s |
The R7770 Power Edition Transthermal OC has received a significant core clock increase from 1,000mhz to 1,100mhz. The memory speeds are set at 1,125mhz (4.5Gbps effective), which is the same as the reference AMD card.
