GeForce GTX 285 2GB vs GeForce GTX 465

Intro

Compare all of that to the GeForce GTX 465, which features GPU clock speed of 607 MHz, and 1024 MB of GDDR5 RAM set to run at 802 MHz through a 256-bit bus. It also is made up of 352 SPUs, 44 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

Theoretically, the GeForce GTX 285 2GB should be much faster than the GeForce GTX 465 overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 56384 (55%)

Texel Rate

The GeForce GTX 285 2GB will be much (approximately 94%) faster with regards to anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 25132 (94%)

Pixel Rate

The GeForce GTX 285 2GB should be a little bit (more or less 7%) better at FSAA than the GeForce GTX 465, and able to handle higher screen resolutions better. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 1312 (7%)

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 max amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.