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MSI R7850 Power Edition 2GD5/OC Review

There isn't much to note on the rear of the card. The soldering quality is good. The four large screws hold the Twin Frozr IV cooler on.


The outputs of the card are seen below. We have a pair of v1.2 Mini Display ports, a 1.4a HDMI port and a Dual Link DVI port. An included adapter can be used to convert the DVI to a D-Sub port, really though.. its about time that the ancient VGA went the way of the Dodo.


Here we see the top of the card with its single 6pin PCIe power input. On the left is a single CrossfireX connector for a maximum of two cards. It's a dual slot card of course.



Now lets have a look at the Twin Frozr IV cooler. Three 8mm nickel plated heatpipes distribute heat from the core to a large aluminium fin array. The pair of 80mm fans are used for dissipation. The fans feature a dust removal technology where upon power up, the fans spin backwards to dislodge dust buildup before resuming normal operation. As we'll see in our testing later on, the Twin Frozr IV cooler does an excellent job of keeping the temperatures low and is effectively silent in most reasonable usage scenarios.



MSI employs a metal plate to cool the memory and MOSFET sections. All chips have a thermal strip placed between them allowing air from the twin fans to keep everything nice and cool. This plate serves a dual purpose by adding a great deal of rigidity to card.


Now with the plate removed we see the card in the buff. MSI has placed the PWM on the opposite side of the card from the power input. We hope this doesn't introduce any interference to sensitive circuits.


Now for the PWM section itself. MSI uses their trademark Military Class III components and has included an improved 6+1+1 phase PWM design with super ferrite chokes and Hi-C capacitors. The current capabilities of this system are much improved over the reference design with the bonus of an extended expected lifetime.

To the right of the picture is the voltage controller MSI employs, a uPI semiconductor 1637P.


The memory was difficult to photograph. The eight chips are Hynix H5GQ2H24MFR-T2C GDDR5 memory. They are rated for 1250Mhz operation (5000Mhz effective) so it seems a little strange that MSI would choose to run the R7850 PE at 1200Mhz, the same as the reference spec.

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