GeForce GTX 260 Core 216 vs GeForce GTX 465

Intro

Compare all of that to the GeForce GTX 465, which uses a 40 nm design. nVidia has clocked the core speed at 607 MHz. The GDDR5 RAM runs at a speed of 802 MHz on this particular card. It features 352 SPUs along with 44 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 2 Watts (1%)

Memory Bandwidth

The GeForce GTX 260 Core 216, in theory, should be just a bit faster than the GeForce GTX 465 in general. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 9296 (9%)

Texel Rate

The GeForce GTX 260 Core 216 should be quite a bit (approximately 55%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 260 Core 216		41472 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 14764 (55%)

Pixel Rate

The GeForce GTX 465 will be a small bit (about 20%) better at AA than the GeForce GTX 260 Core 216, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GTX 260 Core 216		16128 Mpixels/sec
	Difference: 3296 (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: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.