GeForce GT 640 

Our benchmarks conclusively show that GT 640 is not a graphics card for gamers.

If you want to spend less, go for the HD 6670, which offers similar performance but costs only $65.

It seems that ZOTAC forgot to fine-tune the fan settings to the capabilities of their cooler, or they decided that low noise is not for low-end graphics card users.

While there are variants with 1 GB memory, ZOTAC has put 2 GB on the card, whether this makes much sense is something we will know at the end of the review.

They are specified to run at 933 MHz (1866 MHz DDR3 effective).

Clocks have remained at the NVIDIA default of 891 MHz GPU and 900 MHz memory.

As a result the card is one of the most power efficient options if you want to build an eco-friendly non-gaming system.

It's not NVIDIA's fault though, their design is power efficient.

Gaming power consumption is very reasonable too, but the card doesn't offer much in terms of gaming power, so these numbers are only of secondary importance here.

The DDR3 memory chips are made by Micron, and carry the model number MT41J128M16JT-107.

Unlike its high-end brethren, the card uses cheaper, but slower DDR3 memory, which you would also find on your mobo's memory modules, for example.

While it can handle some basic gaming at lower resolutions and low details, it has a hard time competing even with cards at a similar price point.

It makes perfect sense from a business standpoint though, because people still buy cards that have big numbers written on the package.