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NVIDIA’s New Mainstream Offer: GeForce 6600 GT, GeForce 6600

Two models make up the new series: GeForce 6600 GT and GeForce 6600. The first is clocked at 500/500 (1000DDR) MHz and is equipped with 128MB of high-speed GDDR3 memory. The GeForce 6600 GT is also the world’s first mainstream GPU with the PCI Express interface to support the Scalable Link Interface (SLI) technology. In other words, you can install two GeForce 6600 GT graphics cards into the two PCI Express x16 slots of your mainboard to enjoy an almost double performance gain in 3D applications. This opportunity doesn’t look very alluring right now, but with the release of NVIDIA’s own new chipsets and the arrival relatively inexpensive mainboards on those chipsets, SLI technology may become fashionable.

The recommended price for the GeForce 6600 GT is set by the developer at $199 for the USA and ?229 for Europe.

The GeForce 6600, being a humbler model, comes with a slower type of memory – DDR SDRAM. It is alike to the GeForce 6600 GT in all, except the frequencies and the SLI technology. The GeForce 6600 GPU doesn’t support SLI at all and works at 300MHz against the other model’s 500MHz. The memory frequency is going to vary among graphics card manufacturers. The price of the solution is not revealed, either. Probably, it will also vary among the manufacturers. The following table compares the characteristics of the two GPU models from the GeForce 6600 series:

GeForce 6600 GT, GeForce 6600 Product Specifications


GeForce 6600 GT

GeForce 6600

Core Clock



Memory Clock


determined by manufacturer

Pixel Pipelines



Vertex Pipelines



Memory Type



Memory Size

128MB (reference design)

128MB, determined by manufacturer

Memory Bus



Recommended Price

$199, $229

determined by manufacturer

This is a worthy replacement to the GeForce FX in everything, save for the 128-bit memory bus, but NVIDIA has got its GeForce 6800 and 6800 GT to compete with the advanced representatives of the last generation of graphics cards, while the GeForce 6600 family is called forth to take the place of the outdated solutions like GeForce FX 5900 XT, 5700 Ultra and 5700. The new tech process and the low transistor count allowed increasing the clock rate of the GeForce 6600 GT to 500MHz – added its 8 pixel pipelines, this should result in an excellent performance, as mainstream solutions go. The availability of only three vertex processors (against 6 in the GeForce 6800 Ultra/GT and 5 in the GeForce 6800) may negatively affect the performance in geometry-heavy scenes, but let’s not worry about that until the testing part of this review.

So, we received a sample of the GeForce 6600 GT card for us to test. Since the GeForce 6600 differs from it in the frequencies only, we will be able to check its performance, too, by simply reducing the clock rates.

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