NVIDIA GeForce GTX 670 2GB Review

Author: SKYMTL
Date: May 8, 2012
Product Name: GeForce GTX 670
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Under the GTX 670ís Heatsink

Once the heatsinkís shroud is removed, weíre treated to a view of the PCB and two heatsinks. The shroud itself overhangs the PCB by a few inches, extending the GTX 670ís length but this allows for a blower-style setup that exhausts hot air outside of your case.

The reference GTX 670 is equipped with sixteen memory pin-outs (four per controller) of which eight are populated with Hynix GDDR5 256MB modules. This layout will allow board partners to equip their GTX 670s with up to 4GB of memory. Unlike some other cards, the memory modules are not covered by the heatsink but should nonetheless get a measure of cooling from the fanís directional airflow.

The primary heatsink on this card is a simple affair that uses a copper contact plate and aluminum fins for dispersing the coreís heat. Unfortunately, as you can see, its slightly bent fins donít point towards a quality construction and will likely cause an obstacle to air movement. However, this was ONLY apparent on our first card and subsequent reference samples DID NOT exhibit any fin bowing.

NVIDIA has equipped the GTX 670 with a 4+2 phase PWM which uses four phases for the GPU core and two for the GDDR5 memory. Its VRM modules are equipped with their own aluminum heat spreader.

With its heatsink removed, the GTX 670 actually looks like a lower end, entry level HTPC card rather than a product that can easily beat the HD 7950. However, most board partners will be using their own upgraded PCBs which will typically be the same length as the one found on the GTX 680.

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