GeForce GT 320 vs GeForce GTX 285 1GB

Intro

Compare all that to the GeForce GTX 285 1GB, which features GPU clock speed of 648 MHz, and 1024 MB of GDDR3 RAM set to run at 1242 MHz through a 512-bit bus. It also is made up of 240 Stream Processors, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 161 Watts (374%)

Memory Bandwidth

The GeForce GTX 285 1GB should theoretically be a lot faster than the GeForce GT 320 overall. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 133696 (529%)

Texel Rate

The GeForce GTX 285 1GB will be much (approximately 300%) better at texture filtering than the GeForce GT 320. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 38880 (300%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 285 1GB is superior to the GeForce GT 320, by a large margin. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 16416 (380%)

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 (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 applied per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.