GeForce 8800 GTS (G92) vs GeForce GTS 450

Intro

Compare those specifications to the GeForce GTS 450, which comes with a core clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G92) will be 8% faster than the GeForce GTS 450 overall, due to its higher data rate. (explain)

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

Texel Rate

The GeForce 8800 GTS (G92) is quite a bit (approximately 66%) more effective at texture filtering than the GeForce GTS 450. (explain)

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

Pixel Rate

The GeForce GTS 450 will be a bit (about 20%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTS (G92), and should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTS 450		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 information (in units of MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.