GeForce GTX 260 Core 216 vs GeForce GTX 465

Intro

Compare all that to the GeForce GTX 465, which has GPU core speed of 607 MHz, and 1024 MB of GDDR5 memory 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 Raster Operation Units.

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

In theory, the GeForce GTX 260 Core 216 should be 9% faster than the GeForce GTX 465 in general, due to its higher bandwidth. (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 will be quite a bit (approximately 55%) faster with regards to texture 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

If running with a high screen resolution is important to you, then the GeForce GTX 465 is a better choice, but it probably won't make a huge difference. (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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.