GeForce 8800 GTS (G92) vs GeForce GTS 450 1GB

Intro

Compare those specs to the GeForce GTS 450 1GB, which makes use of a 40 nm design. nVidia has set the core speed at 783 MHz. The GDDR5 RAM works at a speed of 902 MHz on this specific card. It features 192 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 29 Watts (27%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G92) should be 8% quicker than the GeForce GTS 450 1GB overall, because of its higher bandwidth. (explain)

GeForce 8800 GTS (G92)		62080 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 4352 (8%)

Texel Rate

The GeForce 8800 GTS (G92) should be much (approximately 66%) more effective at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 16544 (66%)

Pixel Rate

The GeForce GTS 450 1GB is a bit (approximately 20%) better at FSAA than the GeForce 8800 GTS (G92), and also should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 2128 (20%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.