GIGABYTE GeForce GTX 670 (2GB) with WINDFORCE 3X Cooling Technology

While the WINDFORCE cooler is pretty large, it's only secured with four screws.  Since it's made mostly out of aluminum and plastic, it's lightweight.

The WINDFORCE cooler's heatsink spans the whole length of the video card.  It employs the tried and "true copper heatpipe with aluminum fin" design.  The heatsink directly cools both the GTX 670 GPU and memory, with the fans also aiding in the cooling of the VRM hardware and heatsink.  The three fans are PWM controlled.

Like many popular modern CPU coolers, the three heatpipes in GIGABYTE's WINDFORCE cooler make direct contact with the GTX 670 core.  The plate in contact with the memory modules also lies against the heatpipes.

Interestingly, GIGABYTE didn't go with the tiny reference design GTX 670 PCB with this video card.  Instead, their GTX 670 uses a slightly beefed up version of the GTX 680's reference design PCB with 5 power phases.  Combined with the long length of the WINDFORCE cooler, this GTX 670 is a bit longer than the reference design at 11" long.

Hynix is the supplier of the GDDR5 used on this GTX 670.  There are eight 2Gbit modules (H5GQ2H24AFR-R0C) rated at 1500MHz QDR (6000MHz effective).  This matches up with the memory clock speed set in the BIOS and should provide some overclocking headroom.

The differences between GIGABYTE's take on the GTX 670 and nVidia's reference design don't just lie in the physical design of the card, but increased clock speeds also help define GIGABYTE's GTX 670 as a higher standard product.  While the reference GTX 670 has GPU and boost clock speeds of 915MHz and 980MHz respectively, GIGABYTE's card is factory clocked at 980MHz and 1059MHz.  The GDDR5 clocks remain unchanged.  Other than the increased clock speeds, the GIGABYTE's GTX 670 GPU is architecturally identical to the reference design.