GeForce 8800 GT 512MB vs GeForce GTS 450 1GB

Intro

Compare all of that to the GeForce GTS 450 1GB, which has GPU core speed of 783 MHz, and 1024 MB of GDDR5 RAM running at 902 MHz through a 128-bit bus. It also is comprised 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 512MB		105 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 1GB is 0% quicker than the GeForce 8800 GT 512MB overall, because of its greater data rate. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce 8800 GT 512MB should be a lot (approximately 34%) more effective at AF than the GeForce GTS 450 1GB. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 8544 (34%)

Pixel Rate

The GeForce GTS 450 1GB will be much (approximately 31%) more effective at full screen anti-aliasing than the GeForce 8800 GT 512MB, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce 8800 GT 512MB		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: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.