GeForce 8800 GT 1GB vs GeForce GTS 450

Intro

Compare all of that to the GeForce GTS 450, which features a core clock speed of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 192 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
GeForce GTS 450		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

Performance-wise, the GeForce GTS 450 should in theory be a small bit better than the GeForce 8800 GT 1GB overall. (explain)

GeForce GTS 450		57728 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce 8800 GT 1GB should be a lot (more or less 34%) better at anisotropic filtering than the GeForce GTS 450. (explain)

GeForce 8800 GT 1GB		33600 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 8544 (34%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTS 450 is the winner, and very much so. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 2928 (31%)

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 (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.